hotspot/src/share/vm/opto/type.cpp
author kvn
Fri, 08 May 2015 11:49:20 -0700
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child 30768 66b53dcce510
permissions -rw-r--r--
8076276: Add support for AVX512 Reviewed-by: kvn, roland Contributed-by: michael.c.berg@intel.com
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/*
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 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "ci/ciMethodData.hpp"
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#include "ci/ciTypeFlow.hpp"
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#include "classfile/symbolTable.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "compiler/compileLog.hpp"
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#include "libadt/dict.hpp"
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#include "memory/gcLocker.hpp"
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#include "memory/oopFactory.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/instanceKlass.hpp"
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#include "oops/instanceMirrorKlass.hpp"
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#include "oops/objArrayKlass.hpp"
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#include "oops/typeArrayKlass.hpp"
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#include "opto/matcher.hpp"
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#include "opto/node.hpp"
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#include "opto/opcodes.hpp"
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#include "opto/type.hpp"
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PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
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// Portions of code courtesy of Clifford Click
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// Optimization - Graph Style
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// Dictionary of types shared among compilations.
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Dict* Type::_shared_type_dict = NULL;
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// Array which maps compiler types to Basic Types
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Type::TypeInfo Type::_type_info[Type::lastype] = {
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  { Bad,             T_ILLEGAL,    "bad",           false, Node::NotAMachineReg, relocInfo::none          },  // Bad
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  { Control,         T_ILLEGAL,    "control",       false, 0,                    relocInfo::none          },  // Control
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  { Bottom,          T_VOID,       "top",           false, 0,                    relocInfo::none          },  // Top
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  { Bad,             T_INT,        "int:",          false, Op_RegI,              relocInfo::none          },  // Int
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  { Bad,             T_LONG,       "long:",         false, Op_RegL,              relocInfo::none          },  // Long
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  { Half,            T_VOID,       "half",          false, 0,                    relocInfo::none          },  // Half
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  { Bad,             T_NARROWOOP,  "narrowoop:",    false, Op_RegN,              relocInfo::none          },  // NarrowOop
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  { Bad,             T_NARROWKLASS,"narrowklass:",  false, Op_RegN,              relocInfo::none          },  // NarrowKlass
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  { Bad,             T_ILLEGAL,    "tuple:",        false, Node::NotAMachineReg, relocInfo::none          },  // Tuple
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  { Bad,             T_ARRAY,      "array:",        false, Node::NotAMachineReg, relocInfo::none          },  // Array
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#ifdef SPARC
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  { Bad,             T_ILLEGAL,    "vectors:",      false, 0,                    relocInfo::none          },  // VectorS
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  { Bad,             T_ILLEGAL,    "vectord:",      false, Op_RegD,              relocInfo::none          },  // VectorD
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  { Bad,             T_ILLEGAL,    "vectorx:",      false, 0,                    relocInfo::none          },  // VectorX
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  { Bad,             T_ILLEGAL,    "vectory:",      false, 0,                    relocInfo::none          },  // VectorY
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  { Bad,             T_ILLEGAL,    "vectorz:",      false, 0,                    relocInfo::none          },  // VectorZ
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#elif defined(PPC64)
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  { Bad,             T_ILLEGAL,    "vectors:",      false, 0,                    relocInfo::none          },  // VectorS
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  { Bad,             T_ILLEGAL,    "vectord:",      false, Op_RegL,              relocInfo::none          },  // VectorD
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  { Bad,             T_ILLEGAL,    "vectorx:",      false, 0,                    relocInfo::none          },  // VectorX
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  { Bad,             T_ILLEGAL,    "vectory:",      false, 0,                    relocInfo::none          },  // VectorY
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  { Bad,             T_ILLEGAL,    "vectorz:",      false, 0,                    relocInfo::none          },  // VectorZ
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#else // all other
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  { Bad,             T_ILLEGAL,    "vectors:",      false, Op_VecS,              relocInfo::none          },  // VectorS
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  { Bad,             T_ILLEGAL,    "vectord:",      false, Op_VecD,              relocInfo::none          },  // VectorD
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  { Bad,             T_ILLEGAL,    "vectorx:",      false, Op_VecX,              relocInfo::none          },  // VectorX
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  { Bad,             T_ILLEGAL,    "vectory:",      false, Op_VecY,              relocInfo::none          },  // VectorY
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  { Bad,             T_ILLEGAL,    "vectorz:",      false, Op_VecZ,              relocInfo::none          },  // VectorZ
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#endif
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  { Bad,             T_ADDRESS,    "anyptr:",       false, Op_RegP,              relocInfo::none          },  // AnyPtr
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  { Bad,             T_ADDRESS,    "rawptr:",       false, Op_RegP,              relocInfo::none          },  // RawPtr
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  { Bad,             T_OBJECT,     "oop:",          true,  Op_RegP,              relocInfo::oop_type      },  // OopPtr
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  { Bad,             T_OBJECT,     "inst:",         true,  Op_RegP,              relocInfo::oop_type      },  // InstPtr
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  { Bad,             T_OBJECT,     "ary:",          true,  Op_RegP,              relocInfo::oop_type      },  // AryPtr
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  { Bad,             T_METADATA,   "metadata:",     false, Op_RegP,              relocInfo::metadata_type },  // MetadataPtr
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  { Bad,             T_METADATA,   "klass:",        false, Op_RegP,              relocInfo::metadata_type },  // KlassPtr
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  { Bad,             T_OBJECT,     "func",          false, 0,                    relocInfo::none          },  // Function
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  { Abio,            T_ILLEGAL,    "abIO",          false, 0,                    relocInfo::none          },  // Abio
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  { Return_Address,  T_ADDRESS,    "return_address",false, Op_RegP,              relocInfo::none          },  // Return_Address
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  { Memory,          T_ILLEGAL,    "memory",        false, 0,                    relocInfo::none          },  // Memory
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  { FloatBot,        T_FLOAT,      "float_top",     false, Op_RegF,              relocInfo::none          },  // FloatTop
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  { FloatCon,        T_FLOAT,      "ftcon:",        false, Op_RegF,              relocInfo::none          },  // FloatCon
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  { FloatTop,        T_FLOAT,      "float",         false, Op_RegF,              relocInfo::none          },  // FloatBot
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  { DoubleBot,       T_DOUBLE,     "double_top",    false, Op_RegD,              relocInfo::none          },  // DoubleTop
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  { DoubleCon,       T_DOUBLE,     "dblcon:",       false, Op_RegD,              relocInfo::none          },  // DoubleCon
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  { DoubleTop,       T_DOUBLE,     "double",        false, Op_RegD,              relocInfo::none          },  // DoubleBot
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  { Top,             T_ILLEGAL,    "bottom",        false, 0,                    relocInfo::none          }   // Bottom
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};
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// Map ideal registers (machine types) to ideal types
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const Type *Type::mreg2type[_last_machine_leaf];
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// Map basic types to canonical Type* pointers.
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const Type* Type::     _const_basic_type[T_CONFLICT+1];
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// Map basic types to constant-zero Types.
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const Type* Type::            _zero_type[T_CONFLICT+1];
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// Map basic types to array-body alias types.
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const TypeAryPtr* TypeAryPtr::_array_body_type[T_CONFLICT+1];
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//=============================================================================
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// Convenience common pre-built types.
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const Type *Type::ABIO;         // State-of-machine only
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const Type *Type::BOTTOM;       // All values
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const Type *Type::CONTROL;      // Control only
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const Type *Type::DOUBLE;       // All doubles
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const Type *Type::FLOAT;        // All floats
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const Type *Type::HALF;         // Placeholder half of doublewide type
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const Type *Type::MEMORY;       // Abstract store only
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const Type *Type::RETURN_ADDRESS;
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const Type *Type::TOP;          // No values in set
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//------------------------------get_const_type---------------------------
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const Type* Type::get_const_type(ciType* type) {
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  if (type == NULL) {
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    return NULL;
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  } else if (type->is_primitive_type()) {
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    return get_const_basic_type(type->basic_type());
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  } else {
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    return TypeOopPtr::make_from_klass(type->as_klass());
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  }
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}
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//---------------------------array_element_basic_type---------------------------------
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// Mapping to the array element's basic type.
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BasicType Type::array_element_basic_type() const {
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  BasicType bt = basic_type();
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  if (bt == T_INT) {
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    if (this == TypeInt::INT)   return T_INT;
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    if (this == TypeInt::CHAR)  return T_CHAR;
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    if (this == TypeInt::BYTE)  return T_BYTE;
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    if (this == TypeInt::BOOL)  return T_BOOLEAN;
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    if (this == TypeInt::SHORT) return T_SHORT;
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    return T_VOID;
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  }
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  return bt;
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}
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//---------------------------get_typeflow_type---------------------------------
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// Import a type produced by ciTypeFlow.
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const Type* Type::get_typeflow_type(ciType* type) {
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  switch (type->basic_type()) {
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  case ciTypeFlow::StateVector::T_BOTTOM:
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    assert(type == ciTypeFlow::StateVector::bottom_type(), "");
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    return Type::BOTTOM;
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  case ciTypeFlow::StateVector::T_TOP:
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    assert(type == ciTypeFlow::StateVector::top_type(), "");
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    return Type::TOP;
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  case ciTypeFlow::StateVector::T_NULL:
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    assert(type == ciTypeFlow::StateVector::null_type(), "");
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    return TypePtr::NULL_PTR;
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  case ciTypeFlow::StateVector::T_LONG2:
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    // The ciTypeFlow pass pushes a long, then the half.
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    // We do the same.
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    assert(type == ciTypeFlow::StateVector::long2_type(), "");
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    return TypeInt::TOP;
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  case ciTypeFlow::StateVector::T_DOUBLE2:
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    // The ciTypeFlow pass pushes double, then the half.
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    // Our convention is the same.
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    assert(type == ciTypeFlow::StateVector::double2_type(), "");
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    return Type::TOP;
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  case T_ADDRESS:
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    assert(type->is_return_address(), "");
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    return TypeRawPtr::make((address)(intptr_t)type->as_return_address()->bci());
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  default:
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    // make sure we did not mix up the cases:
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    assert(type != ciTypeFlow::StateVector::bottom_type(), "");
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    assert(type != ciTypeFlow::StateVector::top_type(), "");
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    assert(type != ciTypeFlow::StateVector::null_type(), "");
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    assert(type != ciTypeFlow::StateVector::long2_type(), "");
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    assert(type != ciTypeFlow::StateVector::double2_type(), "");
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    assert(!type->is_return_address(), "");
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    return Type::get_const_type(type);
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  }
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}
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//-----------------------make_from_constant------------------------------------
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const Type* Type::make_from_constant(ciConstant constant,
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                                     bool require_constant, bool is_autobox_cache) {
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  switch (constant.basic_type()) {
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  case T_BOOLEAN:  return TypeInt::make(constant.as_boolean());
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  case T_CHAR:     return TypeInt::make(constant.as_char());
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  case T_BYTE:     return TypeInt::make(constant.as_byte());
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  case T_SHORT:    return TypeInt::make(constant.as_short());
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  case T_INT:      return TypeInt::make(constant.as_int());
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  case T_LONG:     return TypeLong::make(constant.as_long());
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  case T_FLOAT:    return TypeF::make(constant.as_float());
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  case T_DOUBLE:   return TypeD::make(constant.as_double());
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  case T_ARRAY:
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  case T_OBJECT:
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    {
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      // cases:
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      //   can_be_constant    = (oop not scavengable || ScavengeRootsInCode != 0)
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      //   should_be_constant = (oop not scavengable || ScavengeRootsInCode >= 2)
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      // An oop is not scavengable if it is in the perm gen.
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      ciObject* oop_constant = constant.as_object();
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      if (oop_constant->is_null_object()) {
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        return Type::get_zero_type(T_OBJECT);
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      } else if (require_constant || oop_constant->should_be_constant()) {
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        return TypeOopPtr::make_from_constant(oop_constant, require_constant, is_autobox_cache);
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      }
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    }
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  }
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  // Fall through to failure
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  return NULL;
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}
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//------------------------------make-------------------------------------------
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// Create a simple Type, with default empty symbol sets.  Then hashcons it
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// and look for an existing copy in the type dictionary.
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const Type *Type::make( enum TYPES t ) {
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  return (new Type(t))->hashcons();
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}
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//------------------------------cmp--------------------------------------------
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int Type::cmp( const Type *const t1, const Type *const t2 ) {
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  if( t1->_base != t2->_base )
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    return 1;                   // Missed badly
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  assert(t1 != t2 || t1->eq(t2), "eq must be reflexive");
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  return !t1->eq(t2);           // Return ZERO if equal
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}
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const Type* Type::maybe_remove_speculative(bool include_speculative) const {
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  if (!include_speculative) {
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    return remove_speculative();
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  }
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  return this;
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}
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//------------------------------hash-------------------------------------------
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int Type::uhash( const Type *const t ) {
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  return t->hash();
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}
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#define SMALLINT ((juint)3)  // a value too insignificant to consider widening
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//--------------------------Initialize_shared----------------------------------
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void Type::Initialize_shared(Compile* current) {
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  // This method does not need to be locked because the first system
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  // compilations (stub compilations) occur serially.  If they are
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  // changed to proceed in parallel, then this section will need
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  // locking.
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  Arena* save = current->type_arena();
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  Arena* shared_type_arena = new (mtCompiler)Arena(mtCompiler);
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  current->set_type_arena(shared_type_arena);
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  _shared_type_dict =
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    new (shared_type_arena) Dict( (CmpKey)Type::cmp, (Hash)Type::uhash,
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                                  shared_type_arena, 128 );
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  current->set_type_dict(_shared_type_dict);
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  // Make shared pre-built types.
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  CONTROL = make(Control);      // Control only
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  TOP     = make(Top);          // No values in set
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  MEMORY  = make(Memory);       // Abstract store only
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  ABIO    = make(Abio);         // State-of-machine only
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  RETURN_ADDRESS=make(Return_Address);
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  FLOAT   = make(FloatBot);     // All floats
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  DOUBLE  = make(DoubleBot);    // All doubles
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  BOTTOM  = make(Bottom);       // Everything
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  HALF    = make(Half);         // Placeholder half of doublewide type
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  TypeF::ZERO = TypeF::make(0.0); // Float 0 (positive zero)
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  TypeF::ONE  = TypeF::make(1.0); // Float 1
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  TypeD::ZERO = TypeD::make(0.0); // Double 0 (positive zero)
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  TypeD::ONE  = TypeD::make(1.0); // Double 1
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  TypeInt::MINUS_1 = TypeInt::make(-1);  // -1
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  TypeInt::ZERO    = TypeInt::make( 0);  //  0
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  TypeInt::ONE     = TypeInt::make( 1);  //  1
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  TypeInt::BOOL    = TypeInt::make(0,1,   WidenMin);  // 0 or 1, FALSE or TRUE.
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  TypeInt::CC      = TypeInt::make(-1, 1, WidenMin);  // -1, 0 or 1, condition codes
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  TypeInt::CC_LT   = TypeInt::make(-1,-1, WidenMin);  // == TypeInt::MINUS_1
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  TypeInt::CC_GT   = TypeInt::make( 1, 1, WidenMin);  // == TypeInt::ONE
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  TypeInt::CC_EQ   = TypeInt::make( 0, 0, WidenMin);  // == TypeInt::ZERO
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  TypeInt::CC_LE   = TypeInt::make(-1, 0, WidenMin);
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  TypeInt::CC_GE   = TypeInt::make( 0, 1, WidenMin);  // == TypeInt::BOOL
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  TypeInt::BYTE    = TypeInt::make(-128,127,     WidenMin); // Bytes
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  TypeInt::UBYTE   = TypeInt::make(0, 255,       WidenMin); // Unsigned Bytes
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  TypeInt::CHAR    = TypeInt::make(0,65535,      WidenMin); // Java chars
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  TypeInt::SHORT   = TypeInt::make(-32768,32767, WidenMin); // Java shorts
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  TypeInt::POS     = TypeInt::make(0,max_jint,   WidenMin); // Non-neg values
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  TypeInt::POS1    = TypeInt::make(1,max_jint,   WidenMin); // Positive values
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  TypeInt::INT     = TypeInt::make(min_jint,max_jint, WidenMax); // 32-bit integers
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   313
  TypeInt::SYMINT  = TypeInt::make(-max_jint,max_jint,WidenMin); // symmetric range
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   314
  TypeInt::TYPE_DOMAIN  = TypeInt::INT;
1
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   315
  // CmpL is overloaded both as the bytecode computation returning
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   316
  // a trinary (-1,0,+1) integer result AND as an efficient long
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   317
  // compare returning optimizer ideal-type flags.
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   318
  assert( TypeInt::CC_LT == TypeInt::MINUS_1, "types must match for CmpL to work" );
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   319
  assert( TypeInt::CC_GT == TypeInt::ONE,     "types must match for CmpL to work" );
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   320
  assert( TypeInt::CC_EQ == TypeInt::ZERO,    "types must match for CmpL to work" );
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   321
  assert( TypeInt::CC_GE == TypeInt::BOOL,    "types must match for CmpL to work" );
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   322
  assert( (juint)(TypeInt::CC->_hi - TypeInt::CC->_lo) <= SMALLINT, "CC is truly small");
1
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   323
489c9b5090e2 Initial load
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   324
  TypeLong::MINUS_1 = TypeLong::make(-1);        // -1
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   325
  TypeLong::ZERO    = TypeLong::make( 0);        //  0
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diff changeset
   326
  TypeLong::ONE     = TypeLong::make( 1);        //  1
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diff changeset
   327
  TypeLong::POS     = TypeLong::make(0,max_jlong, WidenMin); // Non-neg values
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   328
  TypeLong::LONG    = TypeLong::make(min_jlong,max_jlong,WidenMax); // 64-bit integers
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diff changeset
   329
  TypeLong::INT     = TypeLong::make((jlong)min_jint,(jlong)max_jint,WidenMin);
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diff changeset
   330
  TypeLong::UINT    = TypeLong::make(0,(jlong)max_juint,WidenMin);
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diff changeset
   331
  TypeLong::TYPE_DOMAIN  = TypeLong::LONG;
1
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   332
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   333
  const Type **fboth =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*));
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   334
  fboth[0] = Type::CONTROL;
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   335
  fboth[1] = Type::CONTROL;
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   336
  TypeTuple::IFBOTH = TypeTuple::make( 2, fboth );
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   337
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   338
  const Type **ffalse =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*));
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   339
  ffalse[0] = Type::CONTROL;
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   340
  ffalse[1] = Type::TOP;
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diff changeset
   341
  TypeTuple::IFFALSE = TypeTuple::make( 2, ffalse );
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   342
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   343
  const Type **fneither =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*));
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   344
  fneither[0] = Type::TOP;
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   345
  fneither[1] = Type::TOP;
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   346
  TypeTuple::IFNEITHER = TypeTuple::make( 2, fneither );
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   347
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   348
  const Type **ftrue =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*));
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diff changeset
   349
  ftrue[0] = Type::TOP;
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diff changeset
   350
  ftrue[1] = Type::CONTROL;
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   351
  TypeTuple::IFTRUE = TypeTuple::make( 2, ftrue );
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   352
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   353
  const Type **floop =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*));
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   354
  floop[0] = Type::CONTROL;
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   355
  floop[1] = TypeInt::INT;
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   356
  TypeTuple::LOOPBODY = TypeTuple::make( 2, floop );
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diff changeset
   357
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parents: 23491
diff changeset
   358
  TypePtr::NULL_PTR= TypePtr::make(AnyPtr, TypePtr::Null, 0);
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diff changeset
   359
  TypePtr::NOTNULL = TypePtr::make(AnyPtr, TypePtr::NotNull, OffsetBot);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
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parents: 23491
diff changeset
   360
  TypePtr::BOTTOM  = TypePtr::make(AnyPtr, TypePtr::BotPTR, OffsetBot);
1
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diff changeset
   361
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diff changeset
   362
  TypeRawPtr::BOTTOM = TypeRawPtr::make( TypePtr::BotPTR );
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diff changeset
   363
  TypeRawPtr::NOTNULL= TypeRawPtr::make( TypePtr::NotNull );
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diff changeset
   364
489c9b5090e2 Initial load
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diff changeset
   365
  const Type **fmembar = TypeTuple::fields(0);
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   366
  TypeTuple::MEMBAR = TypeTuple::make(TypeFunc::Parms+0, fmembar);
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   367
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   368
  const Type **fsc = (const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*));
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   369
  fsc[0] = TypeInt::CC;
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   370
  fsc[1] = Type::MEMORY;
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   371
  TypeTuple::STORECONDITIONAL = TypeTuple::make(2, fsc);
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   372
489c9b5090e2 Initial load
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   373
  TypeInstPtr::NOTNULL = TypeInstPtr::make(TypePtr::NotNull, current->env()->Object_klass());
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   374
  TypeInstPtr::BOTTOM  = TypeInstPtr::make(TypePtr::BotPTR,  current->env()->Object_klass());
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   375
  TypeInstPtr::MIRROR  = TypeInstPtr::make(TypePtr::NotNull, current->env()->Class_klass());
489c9b5090e2 Initial load
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diff changeset
   376
  TypeInstPtr::MARK    = TypeInstPtr::make(TypePtr::BotPTR,  current->env()->Object_klass(),
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diff changeset
   377
                                           false, 0, oopDesc::mark_offset_in_bytes());
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diff changeset
   378
  TypeInstPtr::KLASS   = TypeInstPtr::make(TypePtr::BotPTR,  current->env()->Object_klass(),
489c9b5090e2 Initial load
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diff changeset
   379
                                           false, 0, oopDesc::klass_offset_in_bytes());
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e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
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parents: 23491
diff changeset
   380
  TypeOopPtr::BOTTOM  = TypeOopPtr::make(TypePtr::BotPTR, OffsetBot, TypeOopPtr::InstanceBot);
1
489c9b5090e2 Initial load
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parents:
diff changeset
   381
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parents: 13196
diff changeset
   382
  TypeMetadataPtr::BOTTOM = TypeMetadataPtr::make(TypePtr::BotPTR, NULL, OffsetBot);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
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parents: 13196
diff changeset
   383
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   384
  TypeNarrowOop::NULL_PTR = TypeNarrowOop::make( TypePtr::NULL_PTR );
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   385
  TypeNarrowOop::BOTTOM   = TypeNarrowOop::make( TypeInstPtr::BOTTOM );
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   386
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d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   387
  TypeNarrowKlass::NULL_PTR = TypeNarrowKlass::make( TypePtr::NULL_PTR );
d2a189b83b87 7054512: Compress class pointers after perm gen removal
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parents: 13738
diff changeset
   388
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   389
  mreg2type[Op_Node] = Type::BOTTOM;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   390
  mreg2type[Op_Set ] = 0;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents: 237
diff changeset
   391
  mreg2type[Op_RegN] = TypeNarrowOop::BOTTOM;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents: 237
diff changeset
   392
  mreg2type[Op_RegI] = TypeInt::INT;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents: 237
diff changeset
   393
  mreg2type[Op_RegP] = TypePtr::BOTTOM;
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coleenp
parents: 237
diff changeset
   394
  mreg2type[Op_RegF] = Type::FLOAT;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents: 237
diff changeset
   395
  mreg2type[Op_RegD] = Type::DOUBLE;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   396
  mreg2type[Op_RegL] = TypeLong::LONG;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   397
  mreg2type[Op_RegFlags] = TypeInt::CC;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   398
6431
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
   399
  TypeAryPtr::RANGE   = TypeAryPtr::make( TypePtr::BotPTR, TypeAry::make(Type::BOTTOM,TypeInt::POS), NULL /* current->env()->Object_klass() */, false, arrayOopDesc::length_offset_in_bytes());
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   400
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   401
  TypeAryPtr::NARROWOOPS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeNarrowOop::BOTTOM, TypeInt::POS), NULL /*ciArrayKlass::make(o)*/,  false,  Type::OffsetBot);
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   402
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   403
#ifdef _LP64
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   404
  if (UseCompressedOops) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   405
    assert(TypeAryPtr::NARROWOOPS->is_ptr_to_narrowoop(), "array of narrow oops must be ptr to narrow oop");
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   406
    TypeAryPtr::OOPS  = TypeAryPtr::NARROWOOPS;
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   407
  } else
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   408
#endif
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   409
  {
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   410
    // There is no shared klass for Object[].  See note in TypeAryPtr::klass().
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   411
    TypeAryPtr::OOPS  = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInstPtr::BOTTOM,TypeInt::POS), NULL /*ciArrayKlass::make(o)*/,  false,  Type::OffsetBot);
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   412
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
  TypeAryPtr::BYTES   = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::BYTE      ,TypeInt::POS), ciTypeArrayKlass::make(T_BYTE),   true,  Type::OffsetBot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
  TypeAryPtr::SHORTS  = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::SHORT     ,TypeInt::POS), ciTypeArrayKlass::make(T_SHORT),  true,  Type::OffsetBot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
  TypeAryPtr::CHARS   = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::CHAR      ,TypeInt::POS), ciTypeArrayKlass::make(T_CHAR),   true,  Type::OffsetBot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
  TypeAryPtr::INTS    = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::INT       ,TypeInt::POS), ciTypeArrayKlass::make(T_INT),    true,  Type::OffsetBot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
  TypeAryPtr::LONGS   = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeLong::LONG     ,TypeInt::POS), ciTypeArrayKlass::make(T_LONG),   true,  Type::OffsetBot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  TypeAryPtr::FLOATS  = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::FLOAT        ,TypeInt::POS), ciTypeArrayKlass::make(T_FLOAT),  true,  Type::OffsetBot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
  TypeAryPtr::DOUBLES = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::DOUBLE       ,TypeInt::POS), ciTypeArrayKlass::make(T_DOUBLE), true,  Type::OffsetBot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   421
  // Nobody should ask _array_body_type[T_NARROWOOP]. Use NULL as assert.
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   422
  TypeAryPtr::_array_body_type[T_NARROWOOP] = NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  TypeAryPtr::_array_body_type[T_OBJECT]  = TypeAryPtr::OOPS;
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   424
  TypeAryPtr::_array_body_type[T_ARRAY]   = TypeAryPtr::OOPS; // arrays are stored in oop arrays
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
  TypeAryPtr::_array_body_type[T_BYTE]    = TypeAryPtr::BYTES;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
  TypeAryPtr::_array_body_type[T_BOOLEAN] = TypeAryPtr::BYTES;  // boolean[] is a byte array
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
  TypeAryPtr::_array_body_type[T_SHORT]   = TypeAryPtr::SHORTS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
  TypeAryPtr::_array_body_type[T_CHAR]    = TypeAryPtr::CHARS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
  TypeAryPtr::_array_body_type[T_INT]     = TypeAryPtr::INTS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
  TypeAryPtr::_array_body_type[T_LONG]    = TypeAryPtr::LONGS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
  TypeAryPtr::_array_body_type[T_FLOAT]   = TypeAryPtr::FLOATS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
  TypeAryPtr::_array_body_type[T_DOUBLE]  = TypeAryPtr::DOUBLES;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
  TypeKlassPtr::OBJECT = TypeKlassPtr::make( TypePtr::NotNull, current->env()->Object_klass(), 0 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  TypeKlassPtr::OBJECT_OR_NULL = TypeKlassPtr::make( TypePtr::BotPTR, current->env()->Object_klass(), 0 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  const Type **fi2c = TypeTuple::fields(2);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   438
  fi2c[TypeFunc::Parms+0] = TypeInstPtr::BOTTOM; // Method*
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  fi2c[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // argument pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
  TypeTuple::START_I2C = TypeTuple::make(TypeFunc::Parms+2, fi2c);
489c9b5090e2 Initial load
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parents:
diff changeset
   441
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  const Type **intpair = TypeTuple::fields(2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  intpair[0] = TypeInt::INT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  intpair[1] = TypeInt::INT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  TypeTuple::INT_PAIR = TypeTuple::make(2, intpair);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
  const Type **longpair = TypeTuple::fields(2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
  longpair[0] = TypeLong::LONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  longpair[1] = TypeLong::LONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
  TypeTuple::LONG_PAIR = TypeTuple::make(2, longpair);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
20289
35d78de0c547 8024924: Intrinsify java.lang.Math.addExact
rbackman
parents: 19995
diff changeset
   452
  const Type **intccpair = TypeTuple::fields(2);
35d78de0c547 8024924: Intrinsify java.lang.Math.addExact
rbackman
parents: 19995
diff changeset
   453
  intccpair[0] = TypeInt::INT;
35d78de0c547 8024924: Intrinsify java.lang.Math.addExact
rbackman
parents: 19995
diff changeset
   454
  intccpair[1] = TypeInt::CC;
35d78de0c547 8024924: Intrinsify java.lang.Math.addExact
rbackman
parents: 19995
diff changeset
   455
  TypeTuple::INT_CC_PAIR = TypeTuple::make(2, intccpair);
35d78de0c547 8024924: Intrinsify java.lang.Math.addExact
rbackman
parents: 19995
diff changeset
   456
21105
47618ee96ed5 8026844: Various Math functions needs intrinsification
rbackman
parents: 21099
diff changeset
   457
  const Type **longccpair = TypeTuple::fields(2);
47618ee96ed5 8026844: Various Math functions needs intrinsification
rbackman
parents: 21099
diff changeset
   458
  longccpair[0] = TypeLong::LONG;
47618ee96ed5 8026844: Various Math functions needs intrinsification
rbackman
parents: 21099
diff changeset
   459
  longccpair[1] = TypeInt::CC;
47618ee96ed5 8026844: Various Math functions needs intrinsification
rbackman
parents: 21099
diff changeset
   460
  TypeTuple::LONG_CC_PAIR = TypeTuple::make(2, longccpair);
47618ee96ed5 8026844: Various Math functions needs intrinsification
rbackman
parents: 21099
diff changeset
   461
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   462
  _const_basic_type[T_NARROWOOP]   = TypeNarrowOop::BOTTOM;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   463
  _const_basic_type[T_NARROWKLASS] = Type::BOTTOM;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   464
  _const_basic_type[T_BOOLEAN]     = TypeInt::BOOL;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   465
  _const_basic_type[T_CHAR]        = TypeInt::CHAR;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   466
  _const_basic_type[T_BYTE]        = TypeInt::BYTE;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   467
  _const_basic_type[T_SHORT]       = TypeInt::SHORT;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   468
  _const_basic_type[T_INT]         = TypeInt::INT;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   469
  _const_basic_type[T_LONG]        = TypeLong::LONG;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   470
  _const_basic_type[T_FLOAT]       = Type::FLOAT;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   471
  _const_basic_type[T_DOUBLE]      = Type::DOUBLE;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   472
  _const_basic_type[T_OBJECT]      = TypeInstPtr::BOTTOM;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   473
  _const_basic_type[T_ARRAY]       = TypeInstPtr::BOTTOM; // there is no separate bottom for arrays
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   474
  _const_basic_type[T_VOID]        = TypePtr::NULL_PTR;   // reflection represents void this way
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   475
  _const_basic_type[T_ADDRESS]     = TypeRawPtr::BOTTOM;  // both interpreter return addresses & random raw ptrs
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   476
  _const_basic_type[T_CONFLICT]    = Type::BOTTOM;        // why not?
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   477
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   478
  _zero_type[T_NARROWOOP]   = TypeNarrowOop::NULL_PTR;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   479
  _zero_type[T_NARROWKLASS] = TypeNarrowKlass::NULL_PTR;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   480
  _zero_type[T_BOOLEAN]     = TypeInt::ZERO;     // false == 0
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   481
  _zero_type[T_CHAR]        = TypeInt::ZERO;     // '\0' == 0
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   482
  _zero_type[T_BYTE]        = TypeInt::ZERO;     // 0x00 == 0
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   483
  _zero_type[T_SHORT]       = TypeInt::ZERO;     // 0x0000 == 0
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   484
  _zero_type[T_INT]         = TypeInt::ZERO;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   485
  _zero_type[T_LONG]        = TypeLong::ZERO;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   486
  _zero_type[T_FLOAT]       = TypeF::ZERO;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   487
  _zero_type[T_DOUBLE]      = TypeD::ZERO;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   488
  _zero_type[T_OBJECT]      = TypePtr::NULL_PTR;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   489
  _zero_type[T_ARRAY]       = TypePtr::NULL_PTR; // null array is null oop
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   490
  _zero_type[T_ADDRESS]     = TypePtr::NULL_PTR; // raw pointers use the same null
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   491
  _zero_type[T_VOID]        = Type::TOP;         // the only void value is no value at all
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
  // get_zero_type() should not happen for T_CONFLICT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
  _zero_type[T_CONFLICT]= NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   496
  // Vector predefined types, it needs initialized _const_basic_type[].
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   497
  if (Matcher::vector_size_supported(T_BYTE,4)) {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   498
    TypeVect::VECTS = TypeVect::make(T_BYTE,4);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   499
  }
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   500
  if (Matcher::vector_size_supported(T_FLOAT,2)) {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   501
    TypeVect::VECTD = TypeVect::make(T_FLOAT,2);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   502
  }
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   503
  if (Matcher::vector_size_supported(T_FLOAT,4)) {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   504
    TypeVect::VECTX = TypeVect::make(T_FLOAT,4);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   505
  }
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   506
  if (Matcher::vector_size_supported(T_FLOAT,8)) {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   507
    TypeVect::VECTY = TypeVect::make(T_FLOAT,8);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   508
  }
30624
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
   509
  if (Matcher::vector_size_supported(T_FLOAT,16)) {
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
   510
    TypeVect::VECTZ = TypeVect::make(T_FLOAT,16);
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
   511
  }
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   512
  mreg2type[Op_VecS] = TypeVect::VECTS;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   513
  mreg2type[Op_VecD] = TypeVect::VECTD;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   514
  mreg2type[Op_VecX] = TypeVect::VECTX;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   515
  mreg2type[Op_VecY] = TypeVect::VECTY;
30624
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
   516
  mreg2type[Op_VecZ] = TypeVect::VECTZ;
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   517
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
  // Restore working type arena.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
  current->set_type_arena(save);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
  current->set_type_dict(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
//------------------------------Initialize-------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
void Type::Initialize(Compile* current) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
  assert(current->type_arena() != NULL, "must have created type arena");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  if (_shared_type_dict == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
    Initialize_shared(current);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
  Arena* type_arena = current->type_arena();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
  // Create the hash-cons'ing dictionary with top-level storage allocation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
  Dict *tdic = new (type_arena) Dict( (CmpKey)Type::cmp,(Hash)Type::uhash, type_arena, 128 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
  current->set_type_dict(tdic);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
  // Transfer the shared types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
  DictI i(_shared_type_dict);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
  for( ; i.test(); ++i ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
    Type* t = (Type*)i._value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
    tdic->Insert(t,t);  // New Type, insert into Type table
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
//------------------------------hashcons---------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
// Do the hash-cons trick.  If the Type already exists in the type table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
// delete the current Type and return the existing Type.  Otherwise stick the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
// current Type in the Type table.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
const Type *Type::hashcons(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  debug_only(base());           // Check the assertion in Type::base().
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  // Look up the Type in the Type dictionary
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  Dict *tdic = type_dict();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  Type* old = (Type*)(tdic->Insert(this, this, false));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
  if( old ) {                   // Pre-existing Type?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
    if( old != this )           // Yes, this guy is not the pre-existing?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
      delete this;              // Yes, Nuke this guy
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
    assert( old->_dual, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
    return old;                 // Return pre-existing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  // Every type has a dual (to make my lattice symmetric).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  // Since we just discovered a new Type, compute its dual right now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  assert( !_dual, "" );         // No dual yet
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
  _dual = xdual();              // Compute the dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
  if( cmp(this,_dual)==0 ) {    // Handle self-symmetric
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
    _dual = this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
  assert( !_dual->_dual, "" );  // No reverse dual yet
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
  assert( !(*tdic)[_dual], "" ); // Dual not in type system either
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  // New Type, insert into Type table
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  tdic->Insert((void*)_dual,(void*)_dual);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
  ((Type*)_dual)->_dual = this; // Finish up being symmetric
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
  Type *dual_dual = (Type*)_dual->xdual();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
  assert( eq(dual_dual), "xdual(xdual()) should be identity" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  delete dual_dual;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  return this;                  // Return new Type
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
bool Type::eq( const Type * ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
  return true;                  // Nothing else can go wrong
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
int Type::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
  return _base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
//------------------------------is_finite--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
// Has a finite value
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
bool Type::is_finite() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
//------------------------------is_nan-----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
// Is not a number (NaN)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
bool Type::is_nan()    const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
3173
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   606
//----------------------interface_vs_oop---------------------------------------
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   607
#ifdef ASSERT
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   608
bool Type::interface_vs_oop_helper(const Type *t) const {
3173
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   609
  bool result = false;
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   610
3911
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
   611
  const TypePtr* this_ptr = this->make_ptr(); // In case it is narrow_oop
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
   612
  const TypePtr*    t_ptr =    t->make_ptr();
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
   613
  if( this_ptr == NULL || t_ptr == NULL )
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
   614
    return result;
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
   615
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
   616
  const TypeInstPtr* this_inst = this_ptr->isa_instptr();
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
   617
  const TypeInstPtr*    t_inst =    t_ptr->isa_instptr();
3173
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   618
  if( this_inst && this_inst->is_loaded() && t_inst && t_inst->is_loaded() ) {
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   619
    bool this_interface = this_inst->klass()->is_interface();
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   620
    bool    t_interface =    t_inst->klass()->is_interface();
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   621
    result = this_interface ^ t_interface;
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   622
  }
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   623
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   624
  return result;
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   625
}
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   626
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   627
bool Type::interface_vs_oop(const Type *t) const {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   628
  if (interface_vs_oop_helper(t)) {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   629
    return true;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   630
  }
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   631
  // Now check the speculative parts as well
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
   632
  const TypePtr* this_spec = isa_ptr() != NULL ? is_ptr()->speculative() : NULL;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
   633
  const TypePtr* t_spec = t->isa_ptr() != NULL ? t->is_ptr()->speculative() : NULL;
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   634
  if (this_spec != NULL && t_spec != NULL) {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   635
    if (this_spec->interface_vs_oop_helper(t_spec)) {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   636
      return true;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   637
    }
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   638
    return false;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   639
  }
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   640
  if (this_spec != NULL && this_spec->interface_vs_oop_helper(t)) {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   641
    return true;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   642
  }
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   643
  if (t_spec != NULL && interface_vs_oop_helper(t_spec)) {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   644
    return true;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   645
  }
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   646
  return false;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   647
}
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
   648
3173
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   649
#endif
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   650
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
// Compute the MEET of two types.  NOT virtual.  It enforces that meet is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
// commutative and the lattice is symmetric.
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   654
const Type *Type::meet_helper(const Type *t, bool include_speculative) const {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   655
  if (isa_narrowoop() && t->isa_narrowoop()) {
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   656
    const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative);
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
   657
    return result->make_narrowoop();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   658
  }
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   659
  if (isa_narrowklass() && t->isa_narrowklass()) {
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   660
    const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative);
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   661
    return result->make_narrowklass();
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   662
  }
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   663
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   664
  const Type *this_t = maybe_remove_speculative(include_speculative);
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   665
  t = t->maybe_remove_speculative(include_speculative);
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   666
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   667
  const Type *mt = this_t->xmeet(t);
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   668
  if (isa_narrowoop() || t->isa_narrowoop()) return mt;
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   669
  if (isa_narrowklass() || t->isa_narrowklass()) return mt;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
#ifdef ASSERT
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   671
  assert(mt == t->xmeet(this_t), "meet not commutative");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
  const Type* dual_join = mt->_dual;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
  const Type *t2t    = dual_join->xmeet(t->_dual);
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   674
  const Type *t2this = dual_join->xmeet(this_t->_dual);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
  // Interface meet Oop is Not Symmetric:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
  // Interface:AnyNull meet Oop:AnyNull == Interface:AnyNull
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
  // Interface:NotNull meet Oop:NotNull == java/lang/Object:NotNull
3173
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
   679
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   680
  if( !interface_vs_oop(t) && (t2t != t->_dual || t2this != this_t->_dual) ) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
    tty->print_cr("=== Meet Not Symmetric ===");
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   682
    tty->print("t   =                   ");              t->dump(); tty->cr();
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   683
    tty->print("this=                   ");         this_t->dump(); tty->cr();
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   684
    tty->print("mt=(t meet this)=       ");             mt->dump(); tty->cr();
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   685
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   686
    tty->print("t_dual=                 ");       t->_dual->dump(); tty->cr();
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   687
    tty->print("this_dual=              ");  this_t->_dual->dump(); tty->cr();
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   688
    tty->print("mt_dual=                ");      mt->_dual->dump(); tty->cr();
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   689
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   690
    tty->print("mt_dual meet t_dual=    "); t2t           ->dump(); tty->cr();
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   691
    tty->print("mt_dual meet this_dual= "); t2this        ->dump(); tty->cr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
    fatal("meet not symmetric" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
  return mt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
//------------------------------xmeet------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
// Compute the MEET of two types.  It returns a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
const Type *Type::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
  // Meeting TOP with anything?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
  if( _base == Top ) return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  // Meeting BOTTOM with anything?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  if( _base == Bottom ) return BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
  // Current "this->_base" is one of: Bad, Multi, Control, Top,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
  // Abio, Abstore, Floatxxx, Doublexxx, Bottom, lastype.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  switch (t->base()) {  // Switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
  // Cut in half the number of cases I must handle.  Only need cases for when
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
  // the given enum "t->type" is less than or equal to the local enum "type".
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
  case Int:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
  case Long:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
    return t->xmeet(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
  case OopPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
    return t->xmeet(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
  case InstPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
    return t->xmeet(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   729
  case MetadataPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
  case KlassPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
    return t->xmeet(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
  case AryPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
    return t->xmeet(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   736
  case NarrowOop:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   737
    return t->xmeet(this);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   738
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   739
  case NarrowKlass:
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   740
    return t->xmeet(this);
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   741
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
  case Bad:                     // Type check
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
  default:                      // Bogus type not in lattice
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
    return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
    if( _base == FloatTop ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
  case FloatBot:                // Float
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
    if( _base == FloatBot || _base == FloatTop ) return FLOAT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
    if( _base == DoubleTop || _base == DoubleBot ) return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
    if( _base == DoubleTop ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  case DoubleBot:               // Double
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
    if( _base == DoubleBot || _base == DoubleTop ) return DOUBLE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
    if( _base == FloatTop || _base == FloatBot ) return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
  // These next few cases must match exactly or it is a compile-time error.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
  case Control:                 // Control of code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
  case Abio:                    // State of world outside of program
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
  case Memory:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
    if( _base == t->_base )  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
  case Top:                     // Top of the lattice
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
  // The type is unchanged
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
//-----------------------------filter------------------------------------------
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   783
const Type *Type::filter_helper(const Type *kills, bool include_speculative) const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
   784
  const Type* ft = join_helper(kills, include_speculative);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
  if (ft->empty())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
    return Type::TOP;           // Canonical empty value
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
  return ft;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
// Compute dual right now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
const Type::TYPES Type::dual_type[Type::lastype] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
  Bad,          // Bad
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  Control,      // Control
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
  Bottom,       // Top
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
  Bad,          // Int - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
  Bad,          // Long - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
  Half,         // Half
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   799
  Bad,          // NarrowOop - handled in v-call
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   800
  Bad,          // NarrowKlass - handled in v-call
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
  Bad,          // Tuple - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
  Bad,          // Array - handled in v-call
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   804
  Bad,          // VectorS - handled in v-call
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   805
  Bad,          // VectorD - handled in v-call
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   806
  Bad,          // VectorX - handled in v-call
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
   807
  Bad,          // VectorY - handled in v-call
30624
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
   808
  Bad,          // VectorZ - handled in v-call
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
  Bad,          // AnyPtr - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
  Bad,          // RawPtr - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
  Bad,          // OopPtr - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
  Bad,          // InstPtr - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
  Bad,          // AryPtr - handled in v-call
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   815
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   816
  Bad,          //  MetadataPtr - handled in v-call
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
  Bad,          // KlassPtr - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
  Bad,          // Function - handled in v-call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
  Abio,         // Abio
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
  Return_Address,// Return_Address
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
  Memory,       // Memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
  FloatBot,     // FloatTop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
  FloatCon,     // FloatCon
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
  FloatTop,     // FloatBot
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
  DoubleBot,    // DoubleTop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
  DoubleCon,    // DoubleCon
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
  DoubleTop,    // DoubleBot
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
  Top           // Bottom
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
const Type *Type::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
  // Note: the base() accessor asserts the sanity of _base.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   834
  assert(_type_info[base()].dual_type != Bad, "implement with v-call");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   835
  return new Type(_type_info[_base].dual_type);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
//------------------------------has_memory-------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
bool Type::has_memory() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
  Type::TYPES tx = base();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
  if (tx == Memory) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
  if (tx == Tuple) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
    const TypeTuple *t = is_tuple();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
    for (uint i=0; i < t->cnt(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
      tx = t->field_at(i)->base();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
      if (tx == Memory)  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
void Type::dump2( Dict &d, uint depth, outputStream *st ) const {
24424
2658d7834c6e 8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents: 23525
diff changeset
   855
  st->print("%s", _type_info[_base].msg);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
//------------------------------dump-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
void Type::dump_on(outputStream *st) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
  Dict d(cmpkey,hashkey);       // Stop recursive type dumping
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
  dump2(d,1, st);
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
   863
  if (is_ptr_to_narrowoop()) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   864
    st->print(" [narrow]");
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   865
  } else if (is_ptr_to_narrowklass()) {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   866
    st->print(" [narrowklass]");
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
   867
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
// constants (Ldi nodes).  Singletons are integer, float or double constants.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
bool Type::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
  return _base == Top || _base == Half;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
//------------------------------empty------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
// TRUE if Type is a type with no values, FALSE otherwise.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
bool Type::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
  switch (_base) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
  case Half:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
  case Abio:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
  case Return_Address:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
  case Memory:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
  case Bottom:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
  case DoubleBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
    return false;  // never a singleton, therefore never empty
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
  ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
//------------------------------dump_stats-------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
// Dump collected statistics to stderr
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
void Type::dump_stats() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
  tty->print("Types made: %d\n", type_dict()->Size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
//------------------------------typerr-----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
void Type::typerr( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
  tty->print("\nError mixing types: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
  dump();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
  tty->print(" and ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
  t->dump();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
  tty->print("\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
  ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
const TypeF *TypeF::ZERO;       // Floating point zero
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
const TypeF *TypeF::ONE;        // Floating point one
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
// Create a float constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
const TypeF *TypeF::make(float f) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
  return (TypeF*)(new TypeF(f))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
// Compute the MEET of two types.  It returns a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
const Type *TypeF::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
  // Current "this->_base" is FloatCon
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
  switch (t->base()) {          // Switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
  case AnyPtr:                  // Mixing with oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
  case RawPtr:                  // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
  case OopPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
  case InstPtr:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   945
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
   946
  case MetadataPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
  case KlassPtr:
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
   948
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
   949
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
  case Int:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
  case Long:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
  case DoubleBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
    return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
  case FloatCon:                // Float-constant vs Float-constant?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
    if( jint_cast(_f) != jint_cast(t->getf()) )         // unequal constants?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
                                // must compare bitwise as positive zero, negative zero and NaN have
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
                                // all the same representation in C++
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
      return FLOAT;             // Return generic float
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
                                // Equal constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
    break;                      // Return the float constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
  return this;                  // Return the float constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
// Dual: symmetric
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
const Type *TypeF::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
// Structural equality check for Type representations
29346
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
   985
bool TypeF::eq(const Type *t) const {
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
   986
  // Bitwise comparison to distinguish between +/-0. These values must be treated
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
   987
  // as different to be consistent with C1 and the interpreter.
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
   988
  return (jint_cast(_f) == jint_cast(t->getf()));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
int TypeF::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
  return *(int*)(&_f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
//------------------------------is_finite--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
// Has a finite value
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
bool TypeF::is_finite() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
  return g_isfinite(getf()) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
//------------------------------is_nan-----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
// Is not a number (NaN)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
bool TypeF::is_nan()    const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
  return g_isnan(getf()) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
// Dump float constant Type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
void TypeF::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
  Type::dump2(d,depth, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
  st->print("%f", _f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
// constants (Ldi nodes).  Singletons are integer, float or double constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
// or a single symbol.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
bool TypeF::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
  return true;                  // Always a singleton
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
bool TypeF::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
  return false;                 // always exactly a singleton
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
const TypeD *TypeD::ZERO;       // Floating point zero
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
const TypeD *TypeD::ONE;        // Floating point one
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
const TypeD *TypeD::make(double d) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
  return (TypeD*)(new TypeD(d))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
// Compute the MEET of two types.  It returns a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
const Type *TypeD::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
  // Current "this->_base" is DoubleCon
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
  switch (t->base()) {          // Switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
  case AnyPtr:                  // Mixing with oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
  case RawPtr:                  // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
  case OopPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
  case InstPtr:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1052
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1053
  case MetadataPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
  case KlassPtr:
609
14b769235815 6711083: 64bit JVM crashes with Internal Error (type.cpp:763) - ShouldNotReachHere() with enabled COOPs
never
parents: 589
diff changeset
  1055
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  1056
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
  case Int:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
  case Long:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
  case DoubleBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
    return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
  case DoubleCon:               // Double-constant vs Double-constant?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
    if( jlong_cast(_d) != jlong_cast(t->getd()) )       // unequal constants? (see comment in TypeF::xmeet)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
      return DOUBLE;            // Return generic double
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
  return this;                  // Return the double constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
// Dual: symmetric
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
const Type *TypeD::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
// Structural equality check for Type representations
29346
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
  1089
bool TypeD::eq(const Type *t) const {
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
  1090
  // Bitwise comparison to distinguish between +/-0. These values must be treated
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
  1091
  // as different to be consistent with C1 and the interpreter.
46bff23fc1a2 8073670: TypeF::eq and TypeD::eq do not handle NaNs correctly
zmajo
parents: 29076
diff changeset
  1092
  return (jlong_cast(_d) == jlong_cast(t->getd()));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
int TypeD::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
  return *(int*)(&_d);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
//------------------------------is_finite--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
// Has a finite value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
bool TypeD::is_finite() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
  return g_isfinite(getd()) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
//------------------------------is_nan-----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
// Is not a number (NaN)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
bool TypeD::is_nan()    const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
  return g_isnan(getd()) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
// Dump double constant Type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
void TypeD::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
  Type::dump2(d,depth,st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
  st->print("%f", _d);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
// constants (Ldi nodes).  Singletons are integer, float or double constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
// or a single symbol.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
bool TypeD::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
  return true;                  // Always a singleton
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
bool TypeD::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
  return false;                 // always exactly a singleton
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
// Convience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
const TypeInt *TypeInt::MINUS_1;// -1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
const TypeInt *TypeInt::ZERO;   // 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
const TypeInt *TypeInt::ONE;    // 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
const TypeInt *TypeInt::BOOL;   // 0 or 1, FALSE or TRUE.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
const TypeInt *TypeInt::CC;     // -1,0 or 1, condition codes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
const TypeInt *TypeInt::CC_LT;  // [-1]  == MINUS_1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
const TypeInt *TypeInt::CC_GT;  // [1]   == ONE
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
const TypeInt *TypeInt::CC_EQ;  // [0]   == ZERO
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
const TypeInt *TypeInt::CC_LE;  // [-1,0]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
const TypeInt *TypeInt::CC_GE;  // [0,1] == BOOL (!)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
const TypeInt *TypeInt::BYTE;   // Bytes, -128 to 127
2150
0d91d17158cc 6797305: Add LoadUB and LoadUI opcode class
twisti
parents: 2131
diff changeset
  1147
const TypeInt *TypeInt::UBYTE;  // Unsigned Bytes, 0 to 255
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
const TypeInt *TypeInt::CHAR;   // Java chars, 0-65535
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
const TypeInt *TypeInt::SHORT;  // Java shorts, -32768-32767
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
const TypeInt *TypeInt::POS;    // Positive 32-bit integers or zero
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
const TypeInt *TypeInt::POS1;   // Positive 32-bit integers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
const TypeInt *TypeInt::INT;    // 32-bit integers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
const TypeInt *TypeInt::SYMINT; // symmetric range [-max_jint..max_jint]
22911
ff49c48c887d 8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents: 22873
diff changeset
  1154
const TypeInt *TypeInt::TYPE_DOMAIN; // alias for TypeInt::INT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
//------------------------------TypeInt----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
TypeInt::TypeInt( jint lo, jint hi, int w ) : Type(Int), _lo(lo), _hi(hi), _widen(w) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
const TypeInt *TypeInt::make( jint lo ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
  return (TypeInt*)(new TypeInt(lo,lo,WidenMin))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1165
static int normalize_int_widen( jint lo, jint hi, int w ) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
  // Certain normalizations keep us sane when comparing types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
  // The 'SMALLINT' covers constants and also CC and its relatives.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
  if (lo <= hi) {
30308
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1169
    if (((juint)hi - lo) <= SMALLINT)  w = Type::WidenMin;
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1170
    if (((juint)hi - lo) >= max_juint) w = Type::WidenMax; // TypeInt::INT
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1171
  } else {
30308
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1172
    if (((juint)lo - hi) <= SMALLINT)  w = Type::WidenMin;
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1173
    if (((juint)lo - hi) >= max_juint) w = Type::WidenMin; // dual TypeInt::INT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
  }
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1175
  return w;
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1176
}
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1177
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1178
const TypeInt *TypeInt::make( jint lo, jint hi, int w ) {
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1179
  w = normalize_int_widen(lo, hi, w);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
  return (TypeInt*)(new TypeInt(lo,hi,w))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
// Compute the MEET of two types.  It returns a new Type representation object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
// with reference count equal to the number of Types pointing at it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
// Caller should wrap a Types around it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
const Type *TypeInt::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
  if( this == t ) return this;  // Meeting same type?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
  // Currently "this->_base" is a TypeInt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
  switch (t->base()) {          // Switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
  case AnyPtr:                  // Mixing with oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
  case RawPtr:                  // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
  case OopPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
  case InstPtr:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1197
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1198
  case MetadataPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
  case KlassPtr:
609
14b769235815 6711083: 64bit JVM crashes with Internal Error (type.cpp:763) - ShouldNotReachHere() with enabled COOPs
never
parents: 589
diff changeset
  1200
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  1201
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
  case Long:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
  case DoubleBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
  case Top:                     // No change
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
  case Int:                     // Int vs Int?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
  // Expand covered set
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
  const TypeInt *r = t->is_int();
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1221
  return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) );
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
// Dual: reverse hi & lo; flip widen
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
const Type *TypeInt::xdual() const {
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1227
  int w = normalize_int_widen(_hi,_lo, WidenMax-_widen);
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1228
  return new TypeInt(_hi,_lo,w);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
//------------------------------widen------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
// Only happens for optimistic top-down optimizations.
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1233
const Type *TypeInt::widen( const Type *old, const Type* limit ) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
  // Coming from TOP or such; no widening
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
  if( old->base() != Int ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
  const TypeInt *ot = old->is_int();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
  // If new guy is equal to old guy, no widening
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
  if( _lo == ot->_lo && _hi == ot->_hi )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
    return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
  // If new guy contains old, then we widened
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
  if( _lo <= ot->_lo && _hi >= ot->_hi ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
    // New contains old
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
    // If new guy is already wider than old, no widening
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
    if( _widen > ot->_widen ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
    // If old guy was a constant, do not bother
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
    if (ot->_lo == ot->_hi)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
    // Now widen new guy.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
    // Check for widening too far
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
    if (_widen == WidenMax) {
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1252
      int max = max_jint;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1253
      int min = min_jint;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1254
      if (limit->isa_int()) {
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1255
        max = limit->is_int()->_hi;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1256
        min = limit->is_int()->_lo;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1257
      }
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1258
      if (min < _lo && _hi < max) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
        // If neither endpoint is extremal yet, push out the endpoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
        // which is closer to its respective limit.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
        if (_lo >= 0 ||                 // easy common case
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1262
            (juint)(_lo - min) >= (juint)(max - _hi)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
          // Try to widen to an unsigned range type of 31 bits:
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1264
          return make(_lo, max, WidenMax);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
        } else {
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1266
          return make(min, _hi, WidenMax);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1267
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
      return TypeInt::INT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1270
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1271
    // Returned widened new guy
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1272
    return make(_lo,_hi,_widen+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1273
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1274
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1275
  // If old guy contains new, then we probably widened too far & dropped to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1276
  // bottom.  Return the wider fellow.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1277
  if ( ot->_lo <= _lo && ot->_hi >= _hi )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1278
    return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
  //fatal("Integer value range is not subset");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1281
  //return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
  return TypeInt::INT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1283
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1284
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1285
//------------------------------narrow---------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
// Only happens for pessimistic optimizations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
const Type *TypeInt::narrow( const Type *old ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
  if (_lo >= _hi)  return this;   // already narrow enough
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
  if (old == NULL)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
  const TypeInt* ot = old->isa_int();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
  if (ot == NULL)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
  jint olo = ot->_lo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
  jint ohi = ot->_hi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1295
  // If new guy is equal to old guy, no narrowing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
  if (_lo == olo && _hi == ohi)  return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
  // If old guy was maximum range, allow the narrowing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
  if (olo == min_jint && ohi == max_jint)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
  if (_lo < olo || _hi > ohi)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
    return this;                // doesn't narrow; pretty wierd
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
  // The new type narrows the old type, so look for a "death march".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
  // See comments on PhaseTransform::saturate.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
  juint nrange = _hi - _lo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
  juint orange = ohi - olo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
  if (nrange < max_juint - 1 && nrange > (orange >> 1) + (SMALLINT*2)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
    // Use the new type only if the range shrinks a lot.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
    // We do not want the optimizer computing 2^31 point by point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
    return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
//-----------------------------filter------------------------------------------
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1318
const Type *TypeInt::filter_helper(const Type *kills, bool include_speculative) const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1319
  const TypeInt* ft = join_helper(kills, include_speculative)->isa_int();
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1320
  if (ft == NULL || ft->empty())
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1321
    return Type::TOP;           // Canonical empty value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1322
  if (ft->_widen < this->_widen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1323
    // Do not allow the value of kill->_widen to affect the outcome.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
    // The widen bits must be allowed to run freely through the graph.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
    ft = TypeInt::make(ft->_lo, ft->_hi, this->_widen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
  return ft;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
bool TypeInt::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
  const TypeInt *r = t->is_int(); // Handy access
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
  return r->_lo == _lo && r->_hi == _hi && r->_widen == _widen;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
int TypeInt::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
  return _lo+_hi+_widen+(int)Type::Int;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
//------------------------------is_finite--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
// Has a finite value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
bool TypeInt::is_finite() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
// Dump TypeInt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
static const char* intname(char* buf, jint n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
  if (n == min_jint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
    return "min";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
  else if (n < min_jint + 10000)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
    sprintf(buf, "min+" INT32_FORMAT, n - min_jint);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
  else if (n == max_jint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
    return "max";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
  else if (n > max_jint - 10000)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
    sprintf(buf, "max-" INT32_FORMAT, max_jint - n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
    sprintf(buf, INT32_FORMAT, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
  return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
void TypeInt::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
  char buf[40], buf2[40];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
  if (_lo == min_jint && _hi == max_jint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
    st->print("int");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
  else if (is_con())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1371
    st->print("int:%s", intname(buf, get_con()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
  else if (_lo == BOOL->_lo && _hi == BOOL->_hi)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
    st->print("bool");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
  else if (_lo == BYTE->_lo && _hi == BYTE->_hi)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
    st->print("byte");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1376
  else if (_lo == CHAR->_lo && _hi == CHAR->_hi)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1377
    st->print("char");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
  else if (_lo == SHORT->_lo && _hi == SHORT->_hi)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
    st->print("short");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
  else if (_hi == max_jint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
    st->print("int:>=%s", intname(buf, _lo));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
  else if (_lo == min_jint)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
    st->print("int:<=%s", intname(buf, _hi));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
    st->print("int:%s..%s", intname(buf, _lo), intname(buf2, _hi));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
  if (_widen != 0 && this != TypeInt::INT)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
    st->print(":%.*s", _widen, "wwww");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
// constants.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
bool TypeInt::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
  return _lo >= _hi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1397
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1398
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1399
bool TypeInt::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1400
  return _lo > _hi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1401
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
const TypeLong *TypeLong::MINUS_1;// -1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
const TypeLong *TypeLong::ZERO; // 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
const TypeLong *TypeLong::ONE;  // 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
const TypeLong *TypeLong::POS;  // >=0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
const TypeLong *TypeLong::LONG; // 64-bit integers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
const TypeLong *TypeLong::INT;  // 32-bit subrange
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
const TypeLong *TypeLong::UINT; // 32-bit unsigned subrange
22911
ff49c48c887d 8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents: 22873
diff changeset
  1412
const TypeLong *TypeLong::TYPE_DOMAIN; // alias for TypeLong::LONG
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
//------------------------------TypeLong---------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
TypeLong::TypeLong( jlong lo, jlong hi, int w ) : Type(Long), _lo(lo), _hi(hi), _widen(w) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
const TypeLong *TypeLong::make( jlong lo ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
  return (TypeLong*)(new TypeLong(lo,lo,WidenMin))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1423
static int normalize_long_widen( jlong lo, jlong hi, int w ) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
  // Certain normalizations keep us sane when comparing types.
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1425
  // The 'SMALLINT' covers constants.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
  if (lo <= hi) {
30308
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1427
    if (((julong)hi - lo) <= SMALLINT)   w = Type::WidenMin;
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1428
    if (((julong)hi - lo) >= max_julong) w = Type::WidenMax; // TypeLong::LONG
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1429
  } else {
30308
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1430
    if (((julong)lo - hi) <= SMALLINT)   w = Type::WidenMin;
2c51ee9bffe1 8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases"
sgehwolf
parents: 30210
diff changeset
  1431
    if (((julong)lo - hi) >= max_julong) w = Type::WidenMin; // dual TypeLong::LONG
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
  }
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1433
  return w;
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1434
}
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1435
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1436
const TypeLong *TypeLong::make( jlong lo, jlong hi, int w ) {
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1437
  w = normalize_long_widen(lo, hi, w);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
  return (TypeLong*)(new TypeLong(lo,hi,w))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
// Compute the MEET of two types.  It returns a new Type representation object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
// with reference count equal to the number of Types pointing at it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
// Caller should wrap a Types around it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
const Type *TypeLong::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
  if( this == t ) return this;  // Meeting same type?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
  // Currently "this->_base" is a TypeLong
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
  switch (t->base()) {          // Switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
  case AnyPtr:                  // Mixing with oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
  case RawPtr:                  // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
  case OopPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
  case InstPtr:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1456
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  1457
  case MetadataPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
  case KlassPtr:
609
14b769235815 6711083: 64bit JVM crashes with Internal Error (type.cpp:763) - ShouldNotReachHere() with enabled COOPs
never
parents: 589
diff changeset
  1459
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  1460
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
  case Int:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
  case DoubleBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
  case Top:                     // No change
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
  case Long:                    // Long vs Long?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
  // Expand covered set
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
  const TypeLong *r = t->is_long(); // Turn into a TypeLong
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1480
  return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) );
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
// Dual: reverse hi & lo; flip widen
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
const Type *TypeLong::xdual() const {
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1486
  int w = normalize_long_widen(_hi,_lo, WidenMax-_widen);
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1487
  return new TypeLong(_hi,_lo,w);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
//------------------------------widen------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
// Only happens for optimistic top-down optimizations.
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1492
const Type *TypeLong::widen( const Type *old, const Type* limit ) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
  // Coming from TOP or such; no widening
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
  if( old->base() != Long ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1495
  const TypeLong *ot = old->is_long();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
  // If new guy is equal to old guy, no widening
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
  if( _lo == ot->_lo && _hi == ot->_hi )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
    return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
  // If new guy contains old, then we widened
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
  if( _lo <= ot->_lo && _hi >= ot->_hi ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
    // New contains old
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
    // If new guy is already wider than old, no widening
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
    if( _widen > ot->_widen ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
    // If old guy was a constant, do not bother
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
    if (ot->_lo == ot->_hi)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1508
    // Now widen new guy.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1509
    // Check for widening too far
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1510
    if (_widen == WidenMax) {
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1511
      jlong max = max_jlong;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1512
      jlong min = min_jlong;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1513
      if (limit->isa_long()) {
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1514
        max = limit->is_long()->_hi;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1515
        min = limit->is_long()->_lo;
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1516
      }
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1517
      if (min < _lo && _hi < max) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
        // If neither endpoint is extremal yet, push out the endpoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
        // which is closer to its respective limit.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
        if (_lo >= 0 ||                 // easy common case
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1521
            (julong)(_lo - min) >= (julong)(max - _hi)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
          // Try to widen to an unsigned range type of 32/63 bits:
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1523
          if (max >= max_juint && _hi < max_juint)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
            return make(_lo, max_juint, WidenMax);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
          else
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1526
            return make(_lo, max, WidenMax);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
        } else {
4012
579b7bad9983 6885584: A particular class structure causes large allocation spike for jit
never
parents: 3911
diff changeset
  1528
          return make(min, _hi, WidenMax);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
      return TypeLong::LONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
    // Returned widened new guy
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
    return make(_lo,_hi,_widen+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
  // If old guy contains new, then we probably widened too far & dropped to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
  // bottom.  Return the wider fellow.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
  if ( ot->_lo <= _lo && ot->_hi >= _hi )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
    return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
  //  fatal("Long value range is not subset");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
  // return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
  return TypeLong::LONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
//------------------------------narrow----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
// Only happens for pessimistic optimizations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
const Type *TypeLong::narrow( const Type *old ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
  if (_lo >= _hi)  return this;   // already narrow enough
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
  if (old == NULL)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
  const TypeLong* ot = old->isa_long();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
  if (ot == NULL)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
  jlong olo = ot->_lo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
  jlong ohi = ot->_hi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
  // If new guy is equal to old guy, no narrowing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
  if (_lo == olo && _hi == ohi)  return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1560
  // If old guy was maximum range, allow the narrowing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
  if (olo == min_jlong && ohi == max_jlong)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
  if (_lo < olo || _hi > ohi)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
    return this;                // doesn't narrow; pretty wierd
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
  // The new type narrows the old type, so look for a "death march".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
  // See comments on PhaseTransform::saturate.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
  julong nrange = _hi - _lo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
  julong orange = ohi - olo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
  if (nrange < max_julong - 1 && nrange > (orange >> 1) + (SMALLINT*2)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
    // Use the new type only if the range shrinks a lot.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
    // We do not want the optimizer computing 2^31 point by point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
    return old;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
//-----------------------------filter------------------------------------------
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1580
const Type *TypeLong::filter_helper(const Type *kills, bool include_speculative) const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1581
  const TypeLong* ft = join_helper(kills, include_speculative)->isa_long();
5900
0715d5166641 6964479: widen normalization of small int and long values should be symmetric
kvn
parents: 5547
diff changeset
  1582
  if (ft == NULL || ft->empty())
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
    return Type::TOP;           // Canonical empty value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
  if (ft->_widen < this->_widen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
    // Do not allow the value of kill->_widen to affect the outcome.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
    // The widen bits must be allowed to run freely through the graph.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
    ft = TypeLong::make(ft->_lo, ft->_hi, this->_widen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
  return ft;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
bool TypeLong::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
  const TypeLong *r = t->is_long(); // Handy access
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
  return r->_lo == _lo &&  r->_hi == _hi  && r->_widen == _widen;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
int TypeLong::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
  return (int)(_lo+_hi+_widen+(int)Type::Long);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
//------------------------------is_finite--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
// Has a finite value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
bool TypeLong::is_finite() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
// Dump TypeLong
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
static const char* longnamenear(jlong x, const char* xname, char* buf, jlong n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
  if (n > x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
    if (n >= x + 10000)  return NULL;
15228
e92acc84ade3 7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents: 14128
diff changeset
  1617
    sprintf(buf, "%s+" JLONG_FORMAT, xname, n - x);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
  } else if (n < x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
    if (n <= x - 10000)  return NULL;
15228
e92acc84ade3 7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents: 14128
diff changeset
  1620
    sprintf(buf, "%s-" JLONG_FORMAT, xname, x - n);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1621
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
    return xname;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
  return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
static const char* longname(char* buf, jlong n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
  const char* str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
  if (n == min_jlong)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
    return "min";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
  else if (n < min_jlong + 10000)
15228
e92acc84ade3 7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents: 14128
diff changeset
  1632
    sprintf(buf, "min+" JLONG_FORMAT, n - min_jlong);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
  else if (n == max_jlong)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
    return "max";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
  else if (n > max_jlong - 10000)
15228
e92acc84ade3 7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents: 14128
diff changeset
  1636
    sprintf(buf, "max-" JLONG_FORMAT, max_jlong - n);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
  else if ((str = longnamenear(max_juint, "maxuint", buf, n)) != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
    return str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
  else if ((str = longnamenear(max_jint, "maxint", buf, n)) != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
    return str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
  else if ((str = longnamenear(min_jint, "minint", buf, n)) != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
    return str;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
  else
15228
e92acc84ade3 7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents: 14128
diff changeset
  1644
    sprintf(buf, JLONG_FORMAT, n);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
  return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
void TypeLong::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
  char buf[80], buf2[80];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
  if (_lo == min_jlong && _hi == max_jlong)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1651
    st->print("long");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
  else if (is_con())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
    st->print("long:%s", longname(buf, get_con()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
  else if (_hi == max_jlong)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
    st->print("long:>=%s", longname(buf, _lo));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
  else if (_lo == min_jlong)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
    st->print("long:<=%s", longname(buf, _hi));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
    st->print("long:%s..%s", longname(buf, _lo), longname(buf2, _hi));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
  if (_widen != 0 && this != TypeLong::LONG)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
    st->print(":%.*s", _widen, "wwww");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
// constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
bool TypeLong::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
  return _lo >= _hi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1672
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1673
bool TypeLong::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1674
  return _lo > _hi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1675
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
const TypeTuple *TypeTuple::IFBOTH;     // Return both arms of IF as reachable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
const TypeTuple *TypeTuple::IFFALSE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
const TypeTuple *TypeTuple::IFTRUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
const TypeTuple *TypeTuple::IFNEITHER;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
const TypeTuple *TypeTuple::LOOPBODY;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
const TypeTuple *TypeTuple::MEMBAR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
const TypeTuple *TypeTuple::STORECONDITIONAL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
const TypeTuple *TypeTuple::START_I2C;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
const TypeTuple *TypeTuple::INT_PAIR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
const TypeTuple *TypeTuple::LONG_PAIR;
20289
35d78de0c547 8024924: Intrinsify java.lang.Math.addExact
rbackman
parents: 19995
diff changeset
  1689
const TypeTuple *TypeTuple::INT_CC_PAIR;
21105
47618ee96ed5 8026844: Various Math functions needs intrinsification
rbackman
parents: 21099
diff changeset
  1690
const TypeTuple *TypeTuple::LONG_CC_PAIR;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
// Make a TypeTuple from the range of a method signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
const TypeTuple *TypeTuple::make_range(ciSignature* sig) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
  ciType* return_type = sig->return_type();
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1697
  uint arg_cnt = return_type->size();
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1698
  const Type **field_array = fields(arg_cnt);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
  switch (return_type->basic_type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
  case T_LONG:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
    field_array[TypeFunc::Parms]   = TypeLong::LONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
    field_array[TypeFunc::Parms+1] = Type::HALF;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1703
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1704
  case T_DOUBLE:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1705
    field_array[TypeFunc::Parms]   = Type::DOUBLE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1706
    field_array[TypeFunc::Parms+1] = Type::HALF;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1707
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
  case T_OBJECT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
  case T_ARRAY:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1710
  case T_BOOLEAN:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
  case T_CHAR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
  case T_FLOAT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
  case T_BYTE:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
  case T_SHORT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
  case T_INT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
    field_array[TypeFunc::Parms] = get_const_type(return_type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
  case T_VOID:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
  default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
    ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
  }
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1723
  return (TypeTuple*)(new TypeTuple(TypeFunc::Parms + arg_cnt, field_array))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
// Make a TypeTuple from the domain of a method signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
const TypeTuple *TypeTuple::make_domain(ciInstanceKlass* recv, ciSignature* sig) {
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1728
  uint arg_cnt = sig->size();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
  uint pos = TypeFunc::Parms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
  const Type **field_array;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
  if (recv != NULL) {
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1733
    arg_cnt++;
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1734
    field_array = fields(arg_cnt);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
    // Use get_const_type here because it respects UseUniqueSubclasses:
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1736
    field_array[pos++] = get_const_type(recv)->join_speculative(TypePtr::NOTNULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
  } else {
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1738
    field_array = fields(arg_cnt);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
  int i = 0;
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1742
  while (pos < TypeFunc::Parms + arg_cnt) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
    ciType* type = sig->type_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
    switch (type->basic_type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
    case T_LONG:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
      field_array[pos++] = TypeLong::LONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
      field_array[pos++] = Type::HALF;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
    case T_DOUBLE:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
      field_array[pos++] = Type::DOUBLE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
      field_array[pos++] = Type::HALF;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
    case T_OBJECT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
    case T_ARRAY:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
    case T_BOOLEAN:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
    case T_CHAR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
    case T_FLOAT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
    case T_BYTE:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
    case T_SHORT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
    case T_INT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
      field_array[pos++] = get_const_type(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
    default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
      ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
    i++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
  }
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1769
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1770
  return (TypeTuple*)(new TypeTuple(TypeFunc::Parms + arg_cnt, field_array))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
const TypeTuple *TypeTuple::make( uint cnt, const Type **fields ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
  return (TypeTuple*)(new TypeTuple(cnt,fields))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
//------------------------------fields-----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
// Subroutine call type with space allocated for argument types
26310
c78739f05ded 8051415: TypeTuple::make_domain() and TypeTuple::make_range() allocate too much memory
zmajo
parents: 25947
diff changeset
  1779
// Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
const Type **TypeTuple::fields( uint arg_cnt ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
  const Type **flds = (const Type **)(Compile::current()->type_arena()->Amalloc_4((TypeFunc::Parms+arg_cnt)*sizeof(Type*) ));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
  flds[TypeFunc::Control  ] = Type::CONTROL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
  flds[TypeFunc::I_O      ] = Type::ABIO;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1784
  flds[TypeFunc::Memory   ] = Type::MEMORY;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1785
  flds[TypeFunc::FramePtr ] = TypeRawPtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
  flds[TypeFunc::ReturnAdr] = Type::RETURN_ADDRESS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
  return flds;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
// Compute the MEET of two types.  It returns a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
const Type *TypeTuple::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1794
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1795
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
  // Current "this->_base" is Tuple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
    return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1804
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1805
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
  case Tuple: {                 // Meeting 2 signatures?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
    const TypeTuple *x = t->is_tuple();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
    assert( _cnt == x->_cnt, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
    const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) ));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
    for( uint i=0; i<_cnt; i++ )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
      fields[i] = field_at(i)->xmeet( x->field_at(i) );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
    return TypeTuple::make(_cnt,fields);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
  return this;                  // Return the double constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
// Dual: compute field-by-field dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
const Type *TypeTuple::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
  const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) ));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
  for( uint i=0; i<_cnt; i++ )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
    fields[i] = _fields[i]->dual();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
  return new TypeTuple(_cnt,fields);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
bool TypeTuple::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
  const TypeTuple *s = (const TypeTuple *)t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
  if (_cnt != s->_cnt)  return false;  // Unequal field counts
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
  for (uint i = 0; i < _cnt; i++)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
    if (field_at(i) != s->field_at(i)) // POINTER COMPARE!  NO RECURSION!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
      return false;             // Missed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
int TypeTuple::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
  intptr_t sum = _cnt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
  for( uint i=0; i<_cnt; i++ )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
    sum += (intptr_t)_fields[i];     // Hash on pointers directly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
  return sum;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
// Dump signature Type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
void TypeTuple::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
  st->print("{");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
  if( !depth || d[this] ) {     // Check for recursive print
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
    st->print("...}");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
  d.Insert((void*)this, (void*)this);   // Stop recursion
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
  if( _cnt ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
    uint i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
    for( i=0; i<_cnt-1; i++ ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
      st->print("%d:", i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
      _fields[i]->dump2(d, depth-1, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
      st->print(", ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
    st->print("%d:", i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
    _fields[i]->dump2(d, depth-1, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
  st->print("}");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
// constants (Ldi nodes).  Singletons are integer, float or double constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
// or a single symbol.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
bool TypeTuple::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
  return false;                 // Never a singleton
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
bool TypeTuple::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
  for( uint i=0; i<_cnt; i++ ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
    if (_fields[i]->empty())  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
inline const TypeInt* normalize_array_size(const TypeInt* size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
  // Certain normalizations keep us sane when comparing types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
  // We do not want arrayOop variables to differ only by the wideness
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
  // of their index types.  Pick minimum wideness, since that is the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
  // forced wideness of small ranges anyway.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
  if (size->_widen != Type::WidenMin)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
    return TypeInt::make(size->_lo, size->_hi, Type::WidenMin);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
    return size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
//------------------------------make-------------------------------------------
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  1903
const TypeAry* TypeAry::make(const Type* elem, const TypeInt* size, bool stable) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  1904
  if (UseCompressedOops && elem->isa_oopptr()) {
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  1905
    elem = elem->make_narrowoop();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  1906
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
  size = normalize_array_size(size);
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  1908
  return (TypeAry*)(new TypeAry(elem,size,stable))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
// Compute the MEET of two types.  It returns a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
const Type *TypeAry::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1917
  // Current "this->_base" is Ary
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1918
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1920
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
    return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
  case Array: {                 // Meeting 2 arrays?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
    const TypeAry *a = t->is_ary();
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1928
    return TypeAry::make(_elem->meet_speculative(a->_elem),
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  1929
                         _size->xmeet(a->_size)->is_int(),
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  1930
                         _stable & a->_stable);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1934
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
  return this;                  // Return the double constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
// Dual: compute field-by-field dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
const Type *TypeAry::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
  const TypeInt* size_dual = _size->dual()->is_int();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
  size_dual = normalize_array_size(size_dual);
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  1943
  return new TypeAry(_elem->dual(), size_dual, !_stable);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
bool TypeAry::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
  const TypeAry *a = (const TypeAry*)t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
  return _elem == a->_elem &&
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  1951
    _stable == a->_stable &&
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
    _size == a->_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
int TypeAry::hash(void) const {
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  1958
  return (intptr_t)_elem + (intptr_t)_size + (_stable ? 43 : 0);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1961
/**
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1962
 * Return same type without a speculative part in the element
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1963
 */
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1964
const Type* TypeAry::remove_speculative() const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1965
  return make(_elem->remove_speculative(), _size, _stable);
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1966
}
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  1967
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1968
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1969
 * Return same type with cleaned up speculative part of element
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1970
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1971
const Type* TypeAry::cleanup_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1972
  return make(_elem->cleanup_speculative(), _size, _stable);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1973
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1974
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1975
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1976
 * Return same type but with a different inline depth (used for speculation)
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1977
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1978
 * @param depth  depth to meet with
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1979
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1980
const TypePtr* TypePtr::with_inline_depth(int depth) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1981
  if (!UseInlineDepthForSpeculativeTypes) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1982
    return this;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1983
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1984
  return make(AnyPtr, _ptr, _offset, _speculative, depth);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1985
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  1986
3173
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1987
//----------------------interface_vs_oop---------------------------------------
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1988
#ifdef ASSERT
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1989
bool TypeAry::interface_vs_oop(const Type *t) const {
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1990
  const TypeAry* t_ary = t->is_ary();
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1991
  if (t_ary) {
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1992
    return _elem->interface_vs_oop(t_ary->_elem);
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1993
  }
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1994
  return false;
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1995
}
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1996
#endif
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  1997
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
void TypeAry::dump2( Dict &d, uint depth, outputStream *st ) const {
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  2001
  if (_stable)  st->print("stable:");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
  _elem->dump2(d, depth, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
  st->print("[");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
  _size->dump2(d, depth, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
  st->print("]");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
// constants (Ldi nodes).  Singletons are integer, float or double constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
// or a single symbol.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
bool TypeAry::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
  return false;                 // Never a singleton
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
bool TypeAry::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
  return _elem->empty() || _size->empty();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
//--------------------------ary_must_be_exact----------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
bool TypeAry::ary_must_be_exact() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
  if (!UseExactTypes)       return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
  // This logic looks at the element type of an array, and returns true
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
  // if the element type is either a primitive or a final instance class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
  // In such cases, an array built on this ary must have no subclasses.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
  if (_elem == BOTTOM)      return false;  // general array not exact
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
  if (_elem == TOP   )      return false;  // inverted general array not exact
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2029
  const TypeOopPtr*  toop = NULL;
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2030
  if (UseCompressedOops && _elem->isa_narrowoop()) {
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2031
    toop = _elem->make_ptr()->isa_oopptr();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2032
  } else {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2033
    toop = _elem->isa_oopptr();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2034
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
  if (!toop)                return true;   // a primitive type, like int
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
  ciKlass* tklass = toop->klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
  if (tklass == NULL)       return false;  // unloaded class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
  if (!tklass->is_loaded()) return false;  // unloaded class
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2039
  const TypeInstPtr* tinst;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2040
  if (_elem->isa_narrowoop())
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2041
    tinst = _elem->make_ptr()->isa_instptr();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2042
  else
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2043
    tinst = _elem->isa_instptr();
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2044
  if (tinst)
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2045
    return tklass->as_instance_klass()->is_final();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2046
  const TypeAryPtr*  tap;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2047
  if (_elem->isa_narrowoop())
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2048
    tap = _elem->make_ptr()->isa_aryptr();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2049
  else
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2050
    tap = _elem->isa_aryptr();
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2051
  if (tap)
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  2052
    return tap->ary()->ary_must_be_exact();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2056
//==============================TypeVect=======================================
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2057
// Convenience common pre-built types.
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2058
const TypeVect *TypeVect::VECTS = NULL; //  32-bit vectors
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2059
const TypeVect *TypeVect::VECTD = NULL; //  64-bit vectors
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2060
const TypeVect *TypeVect::VECTX = NULL; // 128-bit vectors
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2061
const TypeVect *TypeVect::VECTY = NULL; // 256-bit vectors
30624
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
  2062
const TypeVect *TypeVect::VECTZ = NULL; // 512-bit vectors
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2063
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2064
//------------------------------make-------------------------------------------
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2065
const TypeVect* TypeVect::make(const Type *elem, uint length) {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2066
  BasicType elem_bt = elem->array_element_basic_type();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2067
  assert(is_java_primitive(elem_bt), "only primitive types in vector");
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2068
  assert(length > 1 && is_power_of_2(length), "vector length is power of 2");
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2069
  assert(Matcher::vector_size_supported(elem_bt, length), "length in range");
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2070
  int size = length * type2aelembytes(elem_bt);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2071
  switch (Matcher::vector_ideal_reg(size)) {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2072
  case Op_VecS:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2073
    return (TypeVect*)(new TypeVectS(elem, length))->hashcons();
22853
308672304981 8028767: PPC64: (part 121): smaller shared changes needed to build C2
goetz
parents: 21202
diff changeset
  2074
  case Op_RegL:
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2075
  case Op_VecD:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2076
  case Op_RegD:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2077
    return (TypeVect*)(new TypeVectD(elem, length))->hashcons();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2078
  case Op_VecX:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2079
    return (TypeVect*)(new TypeVectX(elem, length))->hashcons();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2080
  case Op_VecY:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2081
    return (TypeVect*)(new TypeVectY(elem, length))->hashcons();
30624
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
  2082
  case Op_VecZ:
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
  2083
    return (TypeVect*)(new TypeVectZ(elem, length))->hashcons();
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2084
  }
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2085
 ShouldNotReachHere();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2086
  return NULL;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2087
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2088
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2089
//------------------------------meet-------------------------------------------
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2090
// Compute the MEET of two types.  It returns a new Type object.
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2091
const Type *TypeVect::xmeet( const Type *t ) const {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2092
  // Perform a fast test for common case; meeting the same types together.
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2093
  if( this == t ) return this;  // Meeting same type-rep?
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2094
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2095
  // Current "this->_base" is Vector
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2096
  switch (t->base()) {          // switch on original type
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2097
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2098
  case Bottom:                  // Ye Olde Default
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2099
    return t;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2100
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2101
  default:                      // All else is a mistake
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2102
    typerr(t);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2103
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2104
  case VectorS:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2105
  case VectorD:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2106
  case VectorX:
30624
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
  2107
  case VectorY:
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
  2108
  case VectorZ: {                // Meeting 2 vectors?
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2109
    const TypeVect* v = t->is_vect();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2110
    assert(  base() == v->base(), "");
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2111
    assert(length() == v->length(), "");
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2112
    assert(element_basic_type() == v->element_basic_type(), "");
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2113
    return TypeVect::make(_elem->xmeet(v->_elem), _length);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2114
  }
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2115
  case Top:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2116
    break;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2117
  }
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2118
  return this;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2119
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2120
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2121
//------------------------------xdual------------------------------------------
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2122
// Dual: compute field-by-field dual
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2123
const Type *TypeVect::xdual() const {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2124
  return new TypeVect(base(), _elem->dual(), _length);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2125
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2126
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2127
//------------------------------eq---------------------------------------------
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2128
// Structural equality check for Type representations
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2129
bool TypeVect::eq(const Type *t) const {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2130
  const TypeVect *v = t->is_vect();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2131
  return (_elem == v->_elem) && (_length == v->_length);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2132
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2133
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2134
//------------------------------hash-------------------------------------------
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2135
// Type-specific hashing function.
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2136
int TypeVect::hash(void) const {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2137
  return (intptr_t)_elem + (intptr_t)_length;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2138
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2139
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2140
//------------------------------singleton--------------------------------------
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2141
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2142
// constants (Ldi nodes).  Vector is singleton if all elements are the same
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2143
// constant value (when vector is created with Replicate code).
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2144
bool TypeVect::singleton(void) const {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2145
// There is no Con node for vectors yet.
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2146
//  return _elem->singleton();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2147
  return false;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2148
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2149
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2150
bool TypeVect::empty(void) const {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2151
  return _elem->empty();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2152
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2153
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2154
//------------------------------dump2------------------------------------------
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2155
#ifndef PRODUCT
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2156
void TypeVect::dump2(Dict &d, uint depth, outputStream *st) const {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2157
  switch (base()) {
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2158
  case VectorS:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2159
    st->print("vectors["); break;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2160
  case VectorD:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2161
    st->print("vectord["); break;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2162
  case VectorX:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2163
    st->print("vectorx["); break;
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2164
  case VectorY:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2165
    st->print("vectory["); break;
30624
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
  2166
  case VectorZ:
2e1803c8a26d 8076276: Add support for AVX512
kvn
parents: 30308
diff changeset
  2167
    st->print("vectorz["); break;
13104
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2168
  default:
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2169
    ShouldNotReachHere();
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2170
  }
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2171
  st->print("%d]:{", _length);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2172
  _elem->dump2(d, depth, st);
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2173
  st->print("}");
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2174
}
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2175
#endif
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2176
657b387034fb 7119644: Increase superword's vector size up to 256 bits
kvn
parents: 8725
diff changeset
  2177
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
const TypePtr *TypePtr::NULL_PTR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
const TypePtr *TypePtr::NOTNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
const TypePtr *TypePtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
// Meet over the PTR enum
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
const TypePtr::PTR TypePtr::ptr_meet[TypePtr::lastPTR][TypePtr::lastPTR] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
  //              TopPTR,    AnyNull,   Constant, Null,   NotNull, BotPTR,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
  { /* Top     */ TopPTR,    AnyNull,   Constant, Null,   NotNull, BotPTR,},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
  { /* AnyNull */ AnyNull,   AnyNull,   Constant, BotPTR, NotNull, BotPTR,},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
  { /* Constant*/ Constant,  Constant,  Constant, BotPTR, NotNull, BotPTR,},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
  { /* Null    */ Null,      BotPTR,    BotPTR,   Null,   BotPTR,  BotPTR,},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
  { /* NotNull */ NotNull,   NotNull,   NotNull,  BotPTR, NotNull, BotPTR,},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
  { /* BotPTR  */ BotPTR,    BotPTR,    BotPTR,   BotPTR, BotPTR,  BotPTR,}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
//------------------------------make-------------------------------------------
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2197
const TypePtr *TypePtr::make(TYPES t, enum PTR ptr, int offset, const TypePtr* speculative, int inline_depth) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2198
  return (TypePtr*)(new TypePtr(t,ptr,offset, speculative, inline_depth))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
//------------------------------cast_to_ptr_type-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
const Type *TypePtr::cast_to_ptr_type(PTR ptr) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
  assert(_base == AnyPtr, "subclass must override cast_to_ptr_type");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
  if( ptr == _ptr ) return this;
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2205
  return make(_base, ptr, _offset, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
//------------------------------get_con----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
intptr_t TypePtr::get_con() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
  assert( _ptr == Null, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
  return _offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
// Compute the MEET of two types.  It returns a new Type object.
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2216
const Type *TypePtr::xmeet(const Type *t) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2217
  const Type* res = xmeet_helper(t);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2218
  if (res->isa_ptr() == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2219
    return res;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2220
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2221
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2222
  const TypePtr* res_ptr = res->is_ptr();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2223
  if (res_ptr->speculative() != NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2224
    // type->speculative() == NULL means that speculation is no better
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2225
    // than type, i.e. type->speculative() == type. So there are 2
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2226
    // ways to represent the fact that we have no useful speculative
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2227
    // data and we should use a single one to be able to test for
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2228
    // equality between types. Check whether type->speculative() ==
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2229
    // type and set speculative to NULL if it is the case.
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2230
    if (res_ptr->remove_speculative() == res_ptr->speculative()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2231
      return res_ptr->remove_speculative();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2232
    }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2233
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2234
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2235
  return res;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2236
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2237
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2238
const Type *TypePtr::xmeet_helper(const Type *t) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
  // Current "this->_base" is AnyPtr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
  case Int:                     // Mixing ints & oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
  case Long:                    // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
  case DoubleBot:
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  2252
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2253
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
  case AnyPtr: {                // Meeting to AnyPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2260
    const TypePtr *tp = t->is_ptr();
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2261
    const TypePtr* speculative = xmeet_speculative(tp);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2262
    int depth = meet_inline_depth(tp->inline_depth());
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2263
    return make(AnyPtr, meet_ptr(tp->ptr()), meet_offset(tp->offset()), speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
  case RawPtr:                  // For these, flip the call around to cut down
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
  case OopPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
  case InstPtr:                 // on the cases I have to handle.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2268
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2269
  case MetadataPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
  case KlassPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
    return t->xmeet(this);      // Call in reverse direction
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
//------------------------------meet_offset------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
int TypePtr::meet_offset( int offset ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
  // Either is 'TOP' offset?  Return the other offset!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
  if( _offset == OffsetTop ) return offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
  if( offset == OffsetTop ) return _offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
  // If either is different, return 'BOTTOM' offset
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2285
  if( _offset != offset ) return OffsetBot;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
  return _offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
//------------------------------dual_offset------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
int TypePtr::dual_offset( ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
  if( _offset == OffsetTop ) return OffsetBot;// Map 'TOP' into 'BOTTOM'
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
  if( _offset == OffsetBot ) return OffsetTop;// Map 'BOTTOM' into 'TOP'
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
  return _offset;               // Map everything else into self
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
// Dual: compute field-by-field dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
const TypePtr::PTR TypePtr::ptr_dual[TypePtr::lastPTR] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
  BotPTR, NotNull, Constant, Null, AnyNull, TopPTR
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
const Type *TypePtr::xdual() const {
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2302
  return new TypePtr(AnyPtr, dual_ptr(), dual_offset(), dual_speculative(), dual_inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2303
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
1068
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2305
//------------------------------xadd_offset------------------------------------
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2306
int TypePtr::xadd_offset( intptr_t offset ) const {
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2307
  // Adding to 'TOP' offset?  Return 'TOP'!
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2308
  if( _offset == OffsetTop || offset == OffsetTop ) return OffsetTop;
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2309
  // Adding to 'BOTTOM' offset?  Return 'BOTTOM'!
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2310
  if( _offset == OffsetBot || offset == OffsetBot ) return OffsetBot;
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2311
  // Addition overflows or "accidentally" equals to OffsetTop? Return 'BOTTOM'!
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2312
  offset += (intptr_t)_offset;
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2313
  if (offset != (int)offset || offset == OffsetTop) return OffsetBot;
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2314
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2315
  // assert( _offset >= 0 && _offset+offset >= 0, "" );
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2316
  // It is possible to construct a negative offset during PhaseCCP
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2317
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2318
  return (int)offset;        // Sum valid offsets
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2319
}
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2320
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
//------------------------------add_offset-------------------------------------
1068
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2322
const TypePtr *TypePtr::add_offset( intptr_t offset ) const {
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2323
  return make(AnyPtr, _ptr, xadd_offset(offset), _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2324
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2325
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2326
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2327
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2328
bool TypePtr::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2329
  const TypePtr *a = (const TypePtr*)t;
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2330
  return _ptr == a->ptr() && _offset == a->offset() && eq_speculative(a) && _inline_depth == a->_inline_depth;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2332
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2333
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2335
int TypePtr::hash(void) const {
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2336
  return _ptr + _offset + hash_speculative() + _inline_depth;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2337
;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2338
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2339
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2340
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2341
 * Return same type without a speculative part
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2342
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2343
const Type* TypePtr::remove_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2344
  if (_speculative == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2345
    return this;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2346
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2347
  assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth");
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2348
  return make(AnyPtr, _ptr, _offset, NULL, _inline_depth);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2349
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2350
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2351
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2352
 * Return same type but drop speculative part if we know we won't use
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2353
 * it
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2354
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2355
const Type* TypePtr::cleanup_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2356
  if (speculative() == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2357
    return this;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2358
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2359
  const Type* no_spec = remove_speculative();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2360
  // If this is NULL_PTR then we don't need the speculative type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2361
  // (with_inline_depth in case the current type inline depth is
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2362
  // InlineDepthTop)
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2363
  if (no_spec == NULL_PTR->with_inline_depth(inline_depth())) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2364
    return no_spec;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2365
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2366
  if (above_centerline(speculative()->ptr())) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2367
    return no_spec;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2368
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2369
  const TypeOopPtr* spec_oopptr = speculative()->isa_oopptr();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2370
  // If the speculative may be null and is an inexact klass then it
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2371
  // doesn't help
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2372
  if (speculative()->maybe_null() && (spec_oopptr == NULL || !spec_oopptr->klass_is_exact())) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2373
    return no_spec;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2374
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2375
  return this;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2376
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2377
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2378
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2379
 * dual of the speculative part of the type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2380
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2381
const TypePtr* TypePtr::dual_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2382
  if (_speculative == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2383
    return NULL;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2384
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2385
  return _speculative->dual()->is_ptr();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2386
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2387
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2388
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2389
 * meet of the speculative parts of 2 types
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2390
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2391
 * @param other  type to meet with
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2392
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2393
const TypePtr* TypePtr::xmeet_speculative(const TypePtr* other) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2394
  bool this_has_spec = (_speculative != NULL);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2395
  bool other_has_spec = (other->speculative() != NULL);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2396
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2397
  if (!this_has_spec && !other_has_spec) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2398
    return NULL;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2399
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2400
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2401
  // If we are at a point where control flow meets and one branch has
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2402
  // a speculative type and the other has not, we meet the speculative
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2403
  // type of one branch with the actual type of the other. If the
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2404
  // actual type is exact and the speculative is as well, then the
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2405
  // result is a speculative type which is exact and we can continue
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2406
  // speculation further.
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2407
  const TypePtr* this_spec = _speculative;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2408
  const TypePtr* other_spec = other->speculative();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2409
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2410
  if (!this_has_spec) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2411
    this_spec = this;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2412
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2413
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2414
  if (!other_has_spec) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2415
    other_spec = other;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2416
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2417
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2418
  return this_spec->meet(other_spec)->is_ptr();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2419
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2420
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2421
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2422
 * dual of the inline depth for this type (used for speculation)
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2423
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2424
int TypePtr::dual_inline_depth() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2425
  return -inline_depth();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2426
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2427
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2428
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2429
 * meet of 2 inline depths (used for speculation)
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2430
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2431
 * @param depth  depth to meet with
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2432
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2433
int TypePtr::meet_inline_depth(int depth) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2434
  return MAX2(inline_depth(), depth);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2435
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2436
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2437
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2438
 * Are the speculative parts of 2 types equal?
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2439
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2440
 * @param other  type to compare this one to
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2441
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2442
bool TypePtr::eq_speculative(const TypePtr* other) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2443
  if (_speculative == NULL || other->speculative() == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2444
    return _speculative == other->speculative();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2445
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2446
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2447
  if (_speculative->base() != other->speculative()->base()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2448
    return false;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2449
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2450
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2451
  return _speculative->eq(other->speculative());
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2452
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2453
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2454
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2455
 * Hash of the speculative part of the type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2456
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2457
int TypePtr::hash_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2458
  if (_speculative == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2459
    return 0;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2460
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2461
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2462
  return _speculative->hash();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2463
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2464
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2465
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2466
 * add offset to the speculative part of the type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2467
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2468
 * @param offset  offset to add
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2469
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2470
const TypePtr* TypePtr::add_offset_speculative(intptr_t offset) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2471
  if (_speculative == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2472
    return NULL;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2473
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2474
  return _speculative->add_offset(offset)->is_ptr();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2475
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2476
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2477
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2478
 * return exact klass from the speculative type if there's one
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2479
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2480
ciKlass* TypePtr::speculative_type() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2481
  if (_speculative != NULL && _speculative->isa_oopptr()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2482
    const TypeOopPtr* speculative = _speculative->join(this)->is_oopptr();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2483
    if (speculative->klass_is_exact()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2484
      return speculative->klass();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2485
    }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2486
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2487
  return NULL;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2488
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2489
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2490
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2491
 * return true if speculative type may be null
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2492
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2493
bool TypePtr::speculative_maybe_null() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2494
  if (_speculative != NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2495
    const TypePtr* speculative = _speculative->join(this)->is_ptr();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2496
    return speculative->maybe_null();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2497
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2498
  return true;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2499
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2500
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2501
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2502
 * Same as TypePtr::speculative_type() but return the klass only if
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2503
 * the speculative tells us is not null
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2504
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2505
ciKlass* TypePtr::speculative_type_not_null() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2506
  if (speculative_maybe_null()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2507
    return NULL;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2508
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2509
  return speculative_type();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2510
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2511
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2512
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2513
 * Check whether new profiling would improve speculative type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2514
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2515
 * @param   exact_kls    class from profiling
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2516
 * @param   inline_depth inlining depth of profile point
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2517
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2518
 * @return  true if type profile is valuable
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2519
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2520
bool TypePtr::would_improve_type(ciKlass* exact_kls, int inline_depth) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2521
  // no profiling?
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2522
  if (exact_kls == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2523
    return false;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2524
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2525
  // no speculative type or non exact speculative type?
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2526
  if (speculative_type() == NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2527
    return true;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2528
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2529
  // If the node already has an exact speculative type keep it,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2530
  // unless it was provided by profiling that is at a deeper
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2531
  // inlining level. Profiling at a higher inlining depth is
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2532
  // expected to be less accurate.
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2533
  if (_speculative->inline_depth() == InlineDepthBottom) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2534
    return false;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2535
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2536
  assert(_speculative->inline_depth() != InlineDepthTop, "can't do the comparison");
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2537
  return inline_depth < _speculative->inline_depth();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2538
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2539
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2540
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2541
 * Check whether new profiling would improve ptr (= tells us it is non
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2542
 * null)
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2543
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2544
 * @param   maybe_null true if profiling tells the ptr may be null
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2545
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2546
 * @return  true if ptr profile is valuable
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2547
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2548
bool TypePtr::would_improve_ptr(bool maybe_null) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2549
  // profiling doesn't tell us anything useful
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2550
  if (maybe_null) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2551
    return false;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2552
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2553
  // We already know this is not be null
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2554
  if (!this->maybe_null()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2555
    return false;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2556
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2557
  // We already know the speculative type cannot be null
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2558
  if (!speculative_maybe_null()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2559
    return false;
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2560
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2561
  return true;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2562
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2563
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2564
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2565
const char *const TypePtr::ptr_msg[TypePtr::lastPTR] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2566
  "TopPTR","AnyNull","Constant","NULL","NotNull","BotPTR"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2567
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2568
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2569
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2570
void TypePtr::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2571
  if( _ptr == Null ) st->print("NULL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2572
  else st->print("%s *", ptr_msg[_ptr]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2573
  if( _offset == OffsetTop ) st->print("+top");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2574
  else if( _offset == OffsetBot ) st->print("+bot");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2575
  else if( _offset ) st->print("+%d", _offset);
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2576
  dump_inline_depth(st);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2577
  dump_speculative(st);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2578
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2579
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2580
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2581
 *dump the speculative part of the type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2582
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2583
void TypePtr::dump_speculative(outputStream *st) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2584
  if (_speculative != NULL) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2585
    st->print(" (speculative=");
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2586
    _speculative->dump_on(st);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2587
    st->print(")");
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2588
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2589
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2590
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2591
/**
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2592
 *dump the inline depth of the type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2593
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2594
void TypePtr::dump_inline_depth(outputStream *st) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2595
  if (_inline_depth != InlineDepthBottom) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2596
    if (_inline_depth == InlineDepthTop) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2597
      st->print(" (inline_depth=InlineDepthTop)");
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2598
    } else {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2599
      st->print(" (inline_depth=%d)", _inline_depth);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2600
    }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2601
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2602
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2603
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2604
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2605
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2606
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2607
// constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2608
bool TypePtr::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2609
  // TopPTR, Null, AnyNull, Constant are all singletons
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2610
  return (_offset != OffsetBot) && !below_centerline(_ptr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2611
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2612
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2613
bool TypePtr::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2614
  return (_offset == OffsetTop) || above_centerline(_ptr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2615
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2616
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2617
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2618
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2619
const TypeRawPtr *TypeRawPtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2620
const TypeRawPtr *TypeRawPtr::NOTNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2621
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2622
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2623
const TypeRawPtr *TypeRawPtr::make( enum PTR ptr ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2624
  assert( ptr != Constant, "what is the constant?" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2625
  assert( ptr != Null, "Use TypePtr for NULL" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2626
  return (TypeRawPtr*)(new TypeRawPtr(ptr,0))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2627
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2628
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2629
const TypeRawPtr *TypeRawPtr::make( address bits ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2630
  assert( bits, "Use TypePtr for NULL" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2631
  return (TypeRawPtr*)(new TypeRawPtr(Constant,bits))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2632
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2633
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2634
//------------------------------cast_to_ptr_type-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2635
const Type *TypeRawPtr::cast_to_ptr_type(PTR ptr) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2636
  assert( ptr != Constant, "what is the constant?" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2637
  assert( ptr != Null, "Use TypePtr for NULL" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2638
  assert( _bits==0, "Why cast a constant address?");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2639
  if( ptr == _ptr ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2640
  return make(ptr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2641
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2642
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2643
//------------------------------get_con----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2644
intptr_t TypeRawPtr::get_con() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2645
  assert( _ptr == Null || _ptr == Constant, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2646
  return (intptr_t)_bits;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2647
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2648
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2649
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2650
// Compute the MEET of two types.  It returns a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2651
const Type *TypeRawPtr::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2652
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2653
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2654
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2655
  // Current "this->_base" is RawPtr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2656
  switch( t->base() ) {         // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2657
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2658
    return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2659
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2660
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2661
  case AnyPtr:                  // Meeting to AnyPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2662
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2663
  case RawPtr: {                // might be top, bot, any/not or constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2664
    enum PTR tptr = t->is_ptr()->ptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2665
    enum PTR ptr = meet_ptr( tptr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2666
    if( ptr == Constant ) {     // Cannot be equal constants, so...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2667
      if( tptr == Constant && _ptr != Constant)  return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2668
      if( _ptr == Constant && tptr != Constant)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2669
      ptr = NotNull;            // Fall down in lattice
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2670
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2671
    return make( ptr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2672
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2673
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2674
  case OopPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2675
  case InstPtr:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2676
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2677
  case MetadataPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2678
  case KlassPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2679
    return TypePtr::BOTTOM;     // Oop meet raw is not well defined
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2680
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2681
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2682
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2683
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2684
  // Found an AnyPtr type vs self-RawPtr type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2685
  const TypePtr *tp = t->is_ptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2686
  switch (tp->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2687
  case TypePtr::TopPTR:  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2688
  case TypePtr::BotPTR:  return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2689
  case TypePtr::Null:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2690
    if( _ptr == TypePtr::TopPTR ) return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2691
    return TypeRawPtr::BOTTOM;
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2692
  case TypePtr::NotNull: return TypePtr::make(AnyPtr, meet_ptr(TypePtr::NotNull), tp->meet_offset(0), tp->speculative(), tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2693
  case TypePtr::AnyNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2694
    if( _ptr == TypePtr::Constant) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2695
    return make( meet_ptr(TypePtr::AnyNull) );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2696
  default: ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2697
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2698
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2699
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2700
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2701
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2702
// Dual: compute field-by-field dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2703
const Type *TypeRawPtr::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2704
  return new TypeRawPtr( dual_ptr(), _bits );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2705
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2706
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2707
//------------------------------add_offset-------------------------------------
1068
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  2708
const TypePtr *TypeRawPtr::add_offset( intptr_t offset ) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2709
  if( offset == OffsetTop ) return BOTTOM; // Undefined offset-> undefined pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2710
  if( offset == OffsetBot ) return BOTTOM; // Unknown offset-> unknown pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2711
  if( offset == 0 ) return this; // No change
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2712
  switch (_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2713
  case TypePtr::TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2714
  case TypePtr::BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2715
  case TypePtr::NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2716
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2717
  case TypePtr::Null:
7886
a5f8bcebf285 6876037: CTW fails jdk7/hotspot/src/share/vm/opto/type.cpp:2055. assert(bits,"Use TypePtr for NULL")
kvn
parents: 7397
diff changeset
  2718
  case TypePtr::Constant: {
a5f8bcebf285 6876037: CTW fails jdk7/hotspot/src/share/vm/opto/type.cpp:2055. assert(bits,"Use TypePtr for NULL")
kvn
parents: 7397
diff changeset
  2719
    address bits = _bits+offset;
a5f8bcebf285 6876037: CTW fails jdk7/hotspot/src/share/vm/opto/type.cpp:2055. assert(bits,"Use TypePtr for NULL")
kvn
parents: 7397
diff changeset
  2720
    if ( bits == 0 ) return TypePtr::NULL_PTR;
a5f8bcebf285 6876037: CTW fails jdk7/hotspot/src/share/vm/opto/type.cpp:2055. assert(bits,"Use TypePtr for NULL")
kvn
parents: 7397
diff changeset
  2721
    return make( bits );
a5f8bcebf285 6876037: CTW fails jdk7/hotspot/src/share/vm/opto/type.cpp:2055. assert(bits,"Use TypePtr for NULL")
kvn
parents: 7397
diff changeset
  2722
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2723
  default:  ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2724
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2725
  return NULL;                  // Lint noise
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2726
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2727
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2728
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2729
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2730
bool TypeRawPtr::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2731
  const TypeRawPtr *a = (const TypeRawPtr*)t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2732
  return _bits == a->_bits && TypePtr::eq(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2733
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2734
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2735
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2736
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2737
int TypeRawPtr::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2738
  return (intptr_t)_bits + TypePtr::hash();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2739
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2741
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2742
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2743
void TypeRawPtr::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2744
  if( _ptr == Constant )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2745
    st->print(INTPTR_FORMAT, _bits);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2746
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2747
    st->print("rawptr:%s", ptr_msg[_ptr]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2748
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2749
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2750
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2751
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2752
// Convenience common pre-built type.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2753
const TypeOopPtr *TypeOopPtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2754
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2755
//------------------------------TypeOopPtr-------------------------------------
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2756
TypeOopPtr::TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2757
                       int instance_id, const TypePtr* speculative, int inline_depth)
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2758
  : TypePtr(t, ptr, offset, speculative, inline_depth),
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2759
    _const_oop(o), _klass(k),
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2760
    _klass_is_exact(xk),
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2761
    _is_ptr_to_narrowoop(false),
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2762
    _is_ptr_to_narrowklass(false),
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  2763
    _is_ptr_to_boxed_value(false),
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2764
    _instance_id(instance_id) {
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  2765
  if (Compile::current()->eliminate_boxing() && (t == InstPtr) &&
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  2766
      (offset > 0) && xk && (k != 0) && k->is_instance_klass()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  2767
    _is_ptr_to_boxed_value = k->as_instance_klass()->is_boxed_value_offset(offset);
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  2768
  }
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2769
#ifdef _LP64
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2770
  if (_offset != 0) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2771
    if (_offset == oopDesc::klass_offset_in_bytes()) {
19979
ebe1dbb6e1aa 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 17383
diff changeset
  2772
      _is_ptr_to_narrowklass = UseCompressedClassPointers;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2773
    } else if (klass() == NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2774
      // Array with unknown body type
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2775
      assert(this->isa_aryptr(), "only arrays without klass");
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2776
      _is_ptr_to_narrowoop = UseCompressedOops;
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2777
    } else if (this->isa_aryptr()) {
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2778
      _is_ptr_to_narrowoop = (UseCompressedOops && klass()->is_obj_array_klass() &&
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2779
                             _offset != arrayOopDesc::length_offset_in_bytes());
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2780
    } else if (klass()->is_instance_klass()) {
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2781
      ciInstanceKlass* ik = klass()->as_instance_klass();
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2782
      ciField* field = NULL;
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2783
      if (this->isa_klassptr()) {
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2784
        // Perm objects don't use compressed references
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2785
      } else if (_offset == OffsetBot || _offset == OffsetTop) {
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2786
        // unsafe access
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2787
        _is_ptr_to_narrowoop = UseCompressedOops;
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2788
      } else { // exclude unsafe ops
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2789
        assert(this->isa_instptr(), "must be an instance ptr.");
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2790
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2791
        if (klass() == ciEnv::current()->Class_klass() &&
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2792
            (_offset == java_lang_Class::klass_offset_in_bytes() ||
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2793
             _offset == java_lang_Class::array_klass_offset_in_bytes())) {
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2794
          // Special hidden fields from the Class.
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2795
          assert(this->isa_instptr(), "must be an instance ptr.");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2796
          _is_ptr_to_narrowoop = false;
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2797
        } else if (klass() == ciEnv::current()->Class_klass() &&
13738
d67be49a5beb 7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents: 13731
diff changeset
  2798
                   _offset >= InstanceMirrorKlass::offset_of_static_fields()) {
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2799
          // Static fields
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2800
          assert(o != NULL, "must be constant");
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2801
          ciInstanceKlass* k = o->as_instance()->java_lang_Class_klass()->as_instance_klass();
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2802
          ciField* field = k->get_field_by_offset(_offset, true);
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2803
          assert(field != NULL, "missing field");
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2804
          BasicType basic_elem_type = field->layout_type();
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2805
          _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT ||
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2806
                                                       basic_elem_type == T_ARRAY);
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2807
        } else {
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2808
          // Instance fields which contains a compressed oop references.
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2809
          field = ik->get_field_by_offset(_offset, false);
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2810
          if (field != NULL) {
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2811
            BasicType basic_elem_type = field->layout_type();
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2812
            _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT ||
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2813
                                                         basic_elem_type == T_ARRAY);
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2814
          } else if (klass()->equals(ciEnv::current()->Object_klass())) {
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2815
            // Compile::find_alias_type() cast exactness on all types to verify
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2816
            // that it does not affect alias type.
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2817
            _is_ptr_to_narrowoop = UseCompressedOops;
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2818
          } else {
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2819
            // Type for the copy start in LibraryCallKit::inline_native_clone().
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2820
            _is_ptr_to_narrowoop = UseCompressedOops;
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8673
diff changeset
  2821
          }
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2822
        }
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2823
      }
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2824
    }
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2825
  }
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2826
#endif
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2827
}
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  2828
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2829
//------------------------------make-------------------------------------------
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2830
const TypeOopPtr *TypeOopPtr::make(PTR ptr, int offset, int instance_id,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2831
                                     const TypePtr* speculative, int inline_depth) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2832
  assert(ptr != Constant, "no constant generic pointers");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2833
  ciKlass*  k = Compile::current()->env()->Object_klass();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2834
  bool      xk = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2835
  ciObject* o = NULL;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  2836
  return (TypeOopPtr*)(new TypeOopPtr(OopPtr, ptr, k, xk, o, offset, instance_id, speculative, inline_depth))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2837
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2838
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2839
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2840
//------------------------------cast_to_ptr_type-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2841
const Type *TypeOopPtr::cast_to_ptr_type(PTR ptr) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2842
  assert(_base == OopPtr, "subclass must override cast_to_ptr_type");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2843
  if( ptr == _ptr ) return this;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  2844
  return make(ptr, _offset, _instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2845
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2846
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  2847
//-----------------------------cast_to_instance_id----------------------------
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  2848
const TypeOopPtr *TypeOopPtr::cast_to_instance_id(int instance_id) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2849
  // There are no instances of a general oop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2850
  // Return self unchanged.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2851
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2852
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2853
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2854
//-----------------------------cast_to_exactness-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2855
const Type *TypeOopPtr::cast_to_exactness(bool klass_is_exact) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2856
  // There is no such thing as an exact general oop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2857
  // Return self unchanged.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2858
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2859
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2860
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2861
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2862
//------------------------------as_klass_type----------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2863
// Return the klass type corresponding to this instance or array type.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2864
// It is the type that is loaded from an object of this type.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2865
const TypeKlassPtr* TypeOopPtr::as_klass_type() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2866
  ciKlass* k = klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2867
  bool    xk = klass_is_exact();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2868
  if (k == NULL)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2869
    return TypeKlassPtr::OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2870
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2871
    return TypeKlassPtr::make(xk? Constant: NotNull, k, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2872
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2873
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2874
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2875
// Compute the MEET of two types.  It returns a new Type object.
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  2876
const Type *TypeOopPtr::xmeet_helper(const Type *t) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2877
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2878
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2879
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2880
  // Current "this->_base" is OopPtr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2881
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2882
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2883
  case Int:                     // Mixing ints & oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2884
  case Long:                    // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2885
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2886
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2887
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2888
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2889
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2890
  case DoubleBot:
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  2891
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  2892
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2893
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2894
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2895
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2896
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2897
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2898
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2899
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2900
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2901
  case RawPtr:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2902
  case MetadataPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2903
  case KlassPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2904
    return TypePtr::BOTTOM;     // Oop meet raw is not well defined
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2905
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2906
  case AnyPtr: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2907
    // Found an AnyPtr type vs self-OopPtr type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2908
    const TypePtr *tp = t->is_ptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2909
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2910
    PTR ptr = meet_ptr(tp->ptr());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2911
    const TypePtr* speculative = xmeet_speculative(tp);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2912
    int depth = meet_inline_depth(tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2913
    switch (tp->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2914
    case Null:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2915
      if (ptr == Null)  return TypePtr::make(AnyPtr, ptr, offset, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2916
      // else fall through:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2917
    case TopPTR:
3911
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
  2918
    case AnyNull: {
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
  2919
      int instance_id = meet_instance_id(InstanceTop);
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2920
      return make(ptr, offset, instance_id, speculative, depth);
3911
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
  2921
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2922
    case BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2923
    case NotNull:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2924
      return TypePtr::make(AnyPtr, ptr, offset, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2925
    default: typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2926
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2927
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2928
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2929
  case OopPtr: {                 // Meeting to other OopPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2930
    const TypeOopPtr *tp = t->is_oopptr();
3805
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  2931
    int instance_id = meet_instance_id(tp->instance_id());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  2932
    const TypePtr* speculative = xmeet_speculative(tp);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  2933
    int depth = meet_inline_depth(tp->inline_depth());
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  2934
    return make(meet_ptr(tp->ptr()), meet_offset(tp->offset()), instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2935
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2936
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2937
  case InstPtr:                  // For these, flip the call around to cut down
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2938
  case AryPtr:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2939
    return t->xmeet(this);      // Call in reverse direction
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2940
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2941
  } // End of switch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2942
  return this;                  // Return the double constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2943
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2944
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2945
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2946
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2947
// Dual of a pure heap pointer.  No relevant klass or oop information.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2948
const Type *TypeOopPtr::xdual() const {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  2949
  assert(klass() == Compile::current()->env()->Object_klass(), "no klasses here");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2950
  assert(const_oop() == NULL,             "no constants here");
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  2951
  return new TypeOopPtr(_base, dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative(), dual_inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2952
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2953
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2954
//--------------------------make_from_klass_common-----------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2955
// Computes the element-type given a klass.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2956
const TypeOopPtr* TypeOopPtr::make_from_klass_common(ciKlass *klass, bool klass_change, bool try_for_exact) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2957
  if (klass->is_instance_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2958
    Compile* C = Compile::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2959
    Dependencies* deps = C->dependencies();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2960
    assert((deps != NULL) == (C->method() != NULL && C->method()->code_size() > 0), "sanity");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2961
    // Element is an instance
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2962
    bool klass_is_exact = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2963
    if (klass->is_loaded()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2964
      // Try to set klass_is_exact.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2965
      ciInstanceKlass* ik = klass->as_instance_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2966
      klass_is_exact = ik->is_final();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2967
      if (!klass_is_exact && klass_change
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2968
          && deps != NULL && UseUniqueSubclasses) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2969
        ciInstanceKlass* sub = ik->unique_concrete_subklass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2970
        if (sub != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2971
          deps->assert_abstract_with_unique_concrete_subtype(ik, sub);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2972
          klass = ik = sub;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2973
          klass_is_exact = sub->is_final();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2974
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2975
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2976
      if (!klass_is_exact && try_for_exact
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2977
          && deps != NULL && UseExactTypes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2978
        if (!ik->is_interface() && !ik->has_subklass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2979
          // Add a dependence; if concrete subclass added we need to recompile
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2980
          deps->assert_leaf_type(ik);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2981
          klass_is_exact = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2982
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2983
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2984
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2985
    return TypeInstPtr::make(TypePtr::BotPTR, klass, klass_is_exact, NULL, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2986
  } else if (klass->is_obj_array_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2987
    // Element is an object array. Recursively call ourself.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2988
    const TypeOopPtr *etype = TypeOopPtr::make_from_klass_common(klass->as_obj_array_klass()->element_klass(), false, try_for_exact);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2989
    bool xk = etype->klass_is_exact();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2990
    const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2991
    // We used to pass NotNull in here, asserting that the sub-arrays
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2992
    // are all not-null.  This is not true in generally, as code can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2993
    // slam NULLs down in the subarrays.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2994
    const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, xk, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2995
    return arr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2996
  } else if (klass->is_type_array_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2997
    // Element is an typeArray
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2998
    const Type* etype = get_const_basic_type(klass->as_type_array_klass()->element_type());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2999
    const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3000
    // We used to pass NotNull in here, asserting that the array pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3001
    // is not-null. That was not true in general.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3002
    const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, true, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3003
    return arr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3004
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3005
    ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3006
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3007
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3008
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3009
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3010
//------------------------------make_from_constant-----------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3011
// Make a java pointer from an oop constant
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3012
const TypeOopPtr* TypeOopPtr::make_from_constant(ciObject* o,
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3013
                                                 bool require_constant,
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3014
                                                 bool is_autobox_cache) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3015
  assert(!o->is_null_object(), "null object not yet handled here.");
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3016
  ciKlass* klass = o->klass();
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3017
  if (klass->is_instance_klass()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3018
    // Element is an instance
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3019
    if (require_constant) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3020
      if (!o->can_be_constant())  return NULL;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3021
    } else if (!o->should_be_constant()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3022
      return TypeInstPtr::make(TypePtr::NotNull, klass, true, NULL, 0);
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3023
    }
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3024
    return TypeInstPtr::make(o);
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3025
  } else if (klass->is_obj_array_klass()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3026
    // Element is an object array. Recursively call ourself.
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3027
    const TypeOopPtr *etype =
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3028
      TypeOopPtr::make_from_klass_raw(klass->as_obj_array_klass()->element_klass());
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3029
    if (is_autobox_cache) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3030
      // The pointers in the autobox arrays are always non-null.
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3031
      etype = etype->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr();
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3032
    }
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3033
    const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length()));
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3034
    // We used to pass NotNull in here, asserting that the sub-arrays
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3035
    // are all not-null.  This is not true in generally, as code can
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3036
    // slam NULLs down in the subarrays.
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3037
    if (require_constant) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3038
      if (!o->can_be_constant())  return NULL;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3039
    } else if (!o->should_be_constant()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3040
      return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0);
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3041
    }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3042
    const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0, InstanceBot, NULL, InlineDepthBottom, is_autobox_cache);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3043
    return arr;
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3044
  } else if (klass->is_type_array_klass()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3045
    // Element is an typeArray
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3046
    const Type* etype =
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3047
      (Type*)get_const_basic_type(klass->as_type_array_klass()->element_type());
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3048
    const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length()));
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3049
    // We used to pass NotNull in here, asserting that the array pointer
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3050
    // is not-null. That was not true in general.
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3051
    if (require_constant) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3052
      if (!o->can_be_constant())  return NULL;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3053
    } else if (!o->should_be_constant()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3054
      return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0);
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3055
    }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3056
    const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3057
    return arr;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3058
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3059
13107
fe2475f9b38a 7157365: jruby/bench.bench_timeout crashes with JVM internal error
twisti
parents: 13104
diff changeset
  3060
  fatal("unhandled object type");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3061
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3062
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3063
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3064
//------------------------------get_con----------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3065
intptr_t TypeOopPtr::get_con() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3066
  assert( _ptr == Null || _ptr == Constant, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3067
  assert( _offset >= 0, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3068
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3069
  if (_offset != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3070
    // After being ported to the compiler interface, the compiler no longer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3071
    // directly manipulates the addresses of oops.  Rather, it only has a pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3072
    // to a handle at compile time.  This handle is embedded in the generated
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3073
    // code and dereferenced at the time the nmethod is made.  Until that time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3074
    // it is not reasonable to do arithmetic with the addresses of oops (we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3075
    // have access to the addresses!).  This does not seem to currently happen,
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 2021
diff changeset
  3076
    // but this assertion here is to help prevent its occurence.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3077
    tty->print_cr("Found oop constant with non-zero offset");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3078
    ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3079
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3080
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3805
diff changeset
  3081
  return (intptr_t)const_oop()->constant_encoding();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3082
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3083
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3084
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3085
//-----------------------------filter------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3086
// Do not allow interface-vs.-noninterface joins to collapse to top.
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3087
const Type *TypeOopPtr::filter_helper(const Type *kills, bool include_speculative) const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3088
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3089
  const Type* ft = join_helper(kills, include_speculative);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3090
  const TypeInstPtr* ftip = ft->isa_instptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3091
  const TypeInstPtr* ktip = kills->isa_instptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3092
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3093
  if (ft->empty()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3094
    // Check for evil case of 'this' being a class and 'kills' expecting an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3095
    // interface.  This can happen because the bytecodes do not contain
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3096
    // enough type info to distinguish a Java-level interface variable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3097
    // from a Java-level object variable.  If we meet 2 classes which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3098
    // both implement interface I, but their meet is at 'j/l/O' which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3099
    // doesn't implement I, we have no way to tell if the result should
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3100
    // be 'I' or 'j/l/O'.  Thus we'll pick 'j/l/O'.  If this then flows
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3101
    // into a Phi which "knows" it's an Interface type we'll have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3102
    // uplift the type.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3103
    if (!empty() && ktip != NULL && ktip->is_loaded() && ktip->klass()->is_interface())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3104
      return kills;             // Uplift to interface
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3105
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3106
    return Type::TOP;           // Canonical empty value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3107
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3109
  // If we have an interface-typed Phi or cast and we narrow to a class type,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3110
  // the join should report back the class.  However, if we have a J/L/Object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3111
  // class-typed Phi and an interface flows in, it's possible that the meet &
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3112
  // join report an interface back out.  This isn't possible but happens
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3113
  // because the type system doesn't interact well with interfaces.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3114
  if (ftip != NULL && ktip != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3115
      ftip->is_loaded() &&  ftip->klass()->is_interface() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3116
      ktip->is_loaded() && !ktip->klass()->is_interface()) {
5120
c733ad68de42 6894807: No ClassCastException for HashAttributeSet constructors if run with -Xcomp
kvn
parents: 4012
diff changeset
  3117
    assert(!ftip->klass_is_exact(), "interface could not be exact");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3118
    return ktip->cast_to_ptr_type(ftip->ptr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3119
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3120
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3121
  return ft;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3122
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3123
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3124
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3125
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3126
bool TypeOopPtr::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3127
  const TypeOopPtr *a = (const TypeOopPtr*)t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3128
  if (_klass_is_exact != a->_klass_is_exact ||
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3129
      _instance_id != a->_instance_id)  return false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3130
  ciObject* one = const_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3131
  ciObject* two = a->const_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3132
  if (one == NULL || two == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3133
    return (one == two) && TypePtr::eq(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3134
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3135
    return one->equals(two) && TypePtr::eq(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3136
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3137
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3138
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3139
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3140
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3141
int TypeOopPtr::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3142
  return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3143
    (const_oop() ? const_oop()->hash() : 0) +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3144
    _klass_is_exact +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3145
    _instance_id +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3146
    TypePtr::hash();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3147
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3149
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3150
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3151
void TypeOopPtr::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3152
  st->print("oopptr:%s", ptr_msg[_ptr]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3153
  if( _klass_is_exact ) st->print(":exact");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3154
  if( const_oop() ) st->print(INTPTR_FORMAT, const_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3155
  switch( _offset ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3156
  case OffsetTop: st->print("+top"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3157
  case OffsetBot: st->print("+any"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3158
  case         0: break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3159
  default:        st->print("+%d",_offset); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3160
  }
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3161
  if (_instance_id == InstanceTop)
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3162
    st->print(",iid=top");
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3163
  else if (_instance_id != InstanceBot)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3164
    st->print(",iid=%d",_instance_id);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3165
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3166
  dump_inline_depth(st);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3167
  dump_speculative(st);
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3168
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3169
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3170
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3171
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3172
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3173
// constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3174
bool TypeOopPtr::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3175
  // detune optimizer to not generate constant oop + constant offset as a constant!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3176
  // TopPTR, Null, AnyNull, Constant are all singletons
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3177
  return (_offset == 0) && !below_centerline(_ptr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3178
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3179
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3180
//------------------------------add_offset-------------------------------------
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3181
const TypePtr *TypeOopPtr::add_offset(intptr_t offset) const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3182
  return make(_ptr, xadd_offset(offset), _instance_id, add_offset_speculative(offset), _inline_depth);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3183
}
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3184
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3185
/**
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3186
 * Return same type without a speculative part
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3187
 */
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3188
const Type* TypeOopPtr::remove_speculative() const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3189
  if (_speculative == NULL) {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3190
    return this;
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3191
  }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3192
  assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth");
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3193
  return make(_ptr, _offset, _instance_id, NULL, _inline_depth);
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3194
}
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3195
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3196
/**
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3197
 * Return same type but drop speculative part if we know we won't use
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3198
 * it
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3199
 */
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3200
const Type* TypeOopPtr::cleanup_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3201
  // If the klass is exact and the ptr is not null then there's
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3202
  // nothing that the speculative type can help us with
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3203
  if (klass_is_exact() && !maybe_null()) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3204
    return remove_speculative();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3205
  }
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3206
  return TypePtr::cleanup_speculative();
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3207
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3208
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3209
/**
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3210
 * Return same type but with a different inline depth (used for speculation)
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3211
 *
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3212
 * @param depth  depth to meet with
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3213
 */
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3214
const TypePtr* TypeOopPtr::with_inline_depth(int depth) const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3215
  if (!UseInlineDepthForSpeculativeTypes) {
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3216
    return this;
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3217
  }
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3218
  return make(_ptr, _offset, _instance_id, _speculative, depth);
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3219
}
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3220
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3221
//------------------------------meet_instance_id--------------------------------
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3222
int TypeOopPtr::meet_instance_id( int instance_id ) const {
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3223
  // Either is 'TOP' instance?  Return the other instance!
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3224
  if( _instance_id == InstanceTop ) return  instance_id;
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3225
  if(  instance_id == InstanceTop ) return _instance_id;
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3226
  // If either is different, return 'BOTTOM' instance
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3227
  if( _instance_id != instance_id ) return InstanceBot;
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3228
  return _instance_id;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3229
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3230
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3231
//------------------------------dual_instance_id--------------------------------
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3232
int TypeOopPtr::dual_instance_id( ) const {
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3233
  if( _instance_id == InstanceTop ) return InstanceBot; // Map TOP into BOTTOM
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3234
  if( _instance_id == InstanceBot ) return InstanceTop; // Map BOTTOM into TOP
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3235
  return _instance_id;              // Map everything else into self
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3236
}
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3237
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3238
/**
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3239
 * Check whether new profiling would improve speculative type
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3240
 *
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3241
 * @param   exact_kls    class from profiling
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3242
 * @param   inline_depth inlining depth of profile point
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3243
 *
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3244
 * @return  true if type profile is valuable
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3245
 */
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3246
bool TypeOopPtr::would_improve_type(ciKlass* exact_kls, int inline_depth) const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3247
  // no way to improve an already exact type
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3248
  if (klass_is_exact()) {
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3249
    return false;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3250
  }
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3251
  return TypePtr::would_improve_type(exact_kls, inline_depth);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3252
}
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3253
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3254
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3255
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3256
const TypeInstPtr *TypeInstPtr::NOTNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3257
const TypeInstPtr *TypeInstPtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3258
const TypeInstPtr *TypeInstPtr::MIRROR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3259
const TypeInstPtr *TypeInstPtr::MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3260
const TypeInstPtr *TypeInstPtr::KLASS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3261
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3262
//------------------------------TypeInstPtr-------------------------------------
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3263
TypeInstPtr::TypeInstPtr(PTR ptr, ciKlass* k, bool xk, ciObject* o, int off,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3264
                         int instance_id, const TypePtr* speculative, int inline_depth)
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3265
  : TypeOopPtr(InstPtr, ptr, k, xk, o, off, instance_id, speculative, inline_depth),
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3266
    _name(k->name()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3267
   assert(k != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3268
          (k->is_loaded() || o == NULL),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3269
          "cannot have constants with non-loaded klass");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3270
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3271
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3272
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3273
const TypeInstPtr *TypeInstPtr::make(PTR ptr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3274
                                     ciKlass* k,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3275
                                     bool xk,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3276
                                     ciObject* o,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3277
                                     int offset,
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3278
                                     int instance_id,
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3279
                                     const TypePtr* speculative,
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3280
                                     int inline_depth) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3281
  assert( !k->is_loaded() || k->is_instance_klass(), "Must be for instance");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3282
  // Either const_oop() is NULL or else ptr is Constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3283
  assert( (!o && ptr != Constant) || (o && ptr == Constant),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3284
          "constant pointers must have a value supplied" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3285
  // Ptr is never Null
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3286
  assert( ptr != Null, "NULL pointers are not typed" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3287
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  3288
  assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3289
  if (!UseExactTypes)  xk = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3290
  if (ptr == Constant) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3291
    // Note:  This case includes meta-object constants, such as methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3292
    xk = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3293
  } else if (k->is_loaded()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3294
    ciInstanceKlass* ik = k->as_instance_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3295
    if (!xk && ik->is_final())     xk = true;   // no inexact final klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3296
    if (xk && ik->is_interface())  xk = false;  // no exact interface
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3297
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3298
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3299
  // Now hash this baby
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3300
  TypeInstPtr *result =
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3301
    (TypeInstPtr*)(new TypeInstPtr(ptr, k, xk, o ,offset, instance_id, speculative, inline_depth))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3302
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3303
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3304
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3305
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3306
/**
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3307
 *  Create constant type for a constant boxed value
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3308
 */
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3309
const Type* TypeInstPtr::get_const_boxed_value() const {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3310
  assert(is_ptr_to_boxed_value(), "should be called only for boxed value");
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3311
  assert((const_oop() != NULL), "should be called only for constant object");
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3312
  ciConstant constant = const_oop()->as_instance()->field_value_by_offset(offset());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3313
  BasicType bt = constant.basic_type();
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3314
  switch (bt) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3315
    case T_BOOLEAN:  return TypeInt::make(constant.as_boolean());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3316
    case T_INT:      return TypeInt::make(constant.as_int());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3317
    case T_CHAR:     return TypeInt::make(constant.as_char());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3318
    case T_BYTE:     return TypeInt::make(constant.as_byte());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3319
    case T_SHORT:    return TypeInt::make(constant.as_short());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3320
    case T_FLOAT:    return TypeF::make(constant.as_float());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3321
    case T_DOUBLE:   return TypeD::make(constant.as_double());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3322
    case T_LONG:     return TypeLong::make(constant.as_long());
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3323
    default:         break;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3324
  }
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3325
  fatal(err_msg_res("Invalid boxed value type '%s'", type2name(bt)));
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3326
  return NULL;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3327
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3328
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3329
//------------------------------cast_to_ptr_type-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3330
const Type *TypeInstPtr::cast_to_ptr_type(PTR ptr) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3331
  if( ptr == _ptr ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3332
  // Reconstruct _sig info here since not a problem with later lazy
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3333
  // construction, _sig will show up on demand.
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3334
  return make(ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3335
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3336
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3337
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3338
//-----------------------------cast_to_exactness-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3339
const Type *TypeInstPtr::cast_to_exactness(bool klass_is_exact) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3340
  if( klass_is_exact == _klass_is_exact ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3341
  if (!UseExactTypes)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3342
  if (!_klass->is_loaded())  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3343
  ciInstanceKlass* ik = _klass->as_instance_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3344
  if( (ik->is_final() || _const_oop) )  return this;  // cannot clear xk
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3345
  if( ik->is_interface() )              return this;  // cannot set xk
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3346
  return make(ptr(), klass(), klass_is_exact, const_oop(), _offset, _instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3347
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3348
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  3349
//-----------------------------cast_to_instance_id----------------------------
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3350
const TypeOopPtr *TypeInstPtr::cast_to_instance_id(int instance_id) const {
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3351
  if( instance_id == _instance_id ) return this;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3352
  return make(_ptr, klass(), _klass_is_exact, const_oop(), _offset, instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3353
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3354
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3355
//------------------------------xmeet_unloaded---------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3356
// Compute the MEET of two InstPtrs when at least one is unloaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3357
// Assume classes are different since called after check for same name/class-loader
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3358
const TypeInstPtr *TypeInstPtr::xmeet_unloaded(const TypeInstPtr *tinst) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3359
    int off = meet_offset(tinst->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3360
    PTR ptr = meet_ptr(tinst->ptr());
3911
a5d8d1764e94 6820514: meet not symmetric failure in ctw
kvn
parents: 3908
diff changeset
  3361
    int instance_id = meet_instance_id(tinst->instance_id());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3362
    const TypePtr* speculative = xmeet_speculative(tinst);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3363
    int depth = meet_inline_depth(tinst->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3364
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3365
    const TypeInstPtr *loaded    = is_loaded() ? this  : tinst;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3366
    const TypeInstPtr *unloaded  = is_loaded() ? tinst : this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3367
    if( loaded->klass()->equals(ciEnv::current()->Object_klass()) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3368
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3369
      // Meet unloaded class with java/lang/Object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3370
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3371
      // Meet
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3372
      //          |                     Unloaded Class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3373
      //  Object  |   TOP    |   AnyNull | Constant |   NotNull |  BOTTOM   |
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3374
      //  ===================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3375
      //   TOP    | ..........................Unloaded......................|
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3376
      //  AnyNull |  U-AN    |................Unloaded......................|
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3377
      // Constant | ... O-NN .................................. |   O-BOT   |
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3378
      //  NotNull | ... O-NN .................................. |   O-BOT   |
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3379
      //  BOTTOM  | ........................Object-BOTTOM ..................|
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3380
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3381
      assert(loaded->ptr() != TypePtr::Null, "insanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3382
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3383
      if(      loaded->ptr() == TypePtr::TopPTR ) { return unloaded; }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3384
      else if (loaded->ptr() == TypePtr::AnyNull) { return TypeInstPtr::make(ptr, unloaded->klass(), false, NULL, off, instance_id, speculative, depth); }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3385
      else if (loaded->ptr() == TypePtr::BotPTR ) { return TypeInstPtr::BOTTOM; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3386
      else if (loaded->ptr() == TypePtr::Constant || loaded->ptr() == TypePtr::NotNull) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3387
        if (unloaded->ptr() == TypePtr::BotPTR  ) { return TypeInstPtr::BOTTOM;  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3388
        else                                      { return TypeInstPtr::NOTNULL; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3389
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3390
      else if( unloaded->ptr() == TypePtr::TopPTR )  { return unloaded; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3391
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3392
      return unloaded->cast_to_ptr_type(TypePtr::AnyNull)->is_instptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3393
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3394
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3395
    // Both are unloaded, not the same class, not Object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3396
    // Or meet unloaded with a different loaded class, not java/lang/Object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3397
    if( ptr != TypePtr::BotPTR ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3398
      return TypeInstPtr::NOTNULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3399
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3400
    return TypeInstPtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3401
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3402
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3403
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3404
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3405
// Compute the MEET of two types.  It returns a new Type object.
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3406
const Type *TypeInstPtr::xmeet_helper(const Type *t) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3407
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3408
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3409
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3410
  // Current "this->_base" is Pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3411
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3412
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3413
  case Int:                     // Mixing ints & oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3414
  case Long:                    // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3415
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3416
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3417
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3418
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3419
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3420
  case DoubleBot:
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  3421
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  3422
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3423
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3424
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3425
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3426
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3427
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3428
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3429
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3430
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3431
  case MetadataPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  3432
  case KlassPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3433
  case RawPtr: return TypePtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3434
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3435
  case AryPtr: {                // All arrays inherit from Object class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3436
    const TypeAryPtr *tp = t->is_aryptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3437
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3438
    PTR ptr = meet_ptr(tp->ptr());
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3439
    int instance_id = meet_instance_id(tp->instance_id());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3440
    const TypePtr* speculative = xmeet_speculative(tp);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3441
    int depth = meet_inline_depth(tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3442
    switch (ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3443
    case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3444
    case AnyNull:                // Fall 'down' to dual of object klass
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3445
      // For instances when a subclass meets a superclass we fall
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3446
      // below the centerline when the superclass is exact. We need to
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3447
      // do the same here.
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3448
      if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3449
        return TypeAryPtr::make(ptr, tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3450
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3451
        // cannot subclass, so the meet has to fall badly below the centerline
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3452
        ptr = NotNull;
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3453
        instance_id = InstanceBot;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3454
        return TypeInstPtr::make( ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3455
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3456
    case Constant:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3457
    case NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3458
    case BotPTR:                // Fall down to object klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3459
      // LCA is object_klass, but if we subclass from the top we can do better
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3460
      if( above_centerline(_ptr) ) { // if( _ptr == TopPTR || _ptr == AnyNull )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3461
        // If 'this' (InstPtr) is above the centerline and it is Object class
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 2021
diff changeset
  3462
        // then we can subclass in the Java class hierarchy.
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3463
        // For instances when a subclass meets a superclass we fall
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3464
        // below the centerline when the superclass is exact. We need
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3465
        // to do the same here.
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3466
        if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3467
          // that is, tp's array type is a subtype of my klass
5030
b9d96b4469eb 6930035: C2 type system incorrectly handles case j.l.Object->meet(constant AryPtr)
kvn
parents: 4566
diff changeset
  3468
          return TypeAryPtr::make(ptr, (ptr == Constant ? tp->const_oop() : NULL),
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3469
                                  tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3470
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3471
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3472
      // The other case cannot happen, since I cannot be a subtype of an array.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3473
      // The meet falls down to Object class below centerline.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3474
      if( ptr == Constant )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3475
         ptr = NotNull;
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3476
      instance_id = InstanceBot;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3477
      return make(ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3478
    default: typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3479
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3480
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3481
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3482
  case OopPtr: {                // Meeting to OopPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3483
    // Found a OopPtr type vs self-InstPtr type
3805
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  3484
    const TypeOopPtr *tp = t->is_oopptr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3485
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3486
    PTR ptr = meet_ptr(tp->ptr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3487
    switch (tp->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3488
    case TopPTR:
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3489
    case AnyNull: {
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3490
      int instance_id = meet_instance_id(InstanceTop);
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3491
      const TypePtr* speculative = xmeet_speculative(tp);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3492
      int depth = meet_inline_depth(tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3493
      return make(ptr, klass(), klass_is_exact(),
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3494
                  (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative, depth);
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3495
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3496
    case NotNull:
3805
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  3497
    case BotPTR: {
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  3498
      int instance_id = meet_instance_id(tp->instance_id());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3499
      const TypePtr* speculative = xmeet_speculative(tp);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3500
      int depth = meet_inline_depth(tp->inline_depth());
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3501
      return TypeOopPtr::make(ptr, offset, instance_id, speculative, depth);
3805
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  3502
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3503
    default: typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3504
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3505
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3506
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3507
  case AnyPtr: {                // Meeting to AnyPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3508
    // Found an AnyPtr type vs self-InstPtr type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3509
    const TypePtr *tp = t->is_ptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3510
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3511
    PTR ptr = meet_ptr(tp->ptr());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3512
    int instance_id = meet_instance_id(InstanceTop);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3513
    const TypePtr* speculative = xmeet_speculative(tp);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3514
    int depth = meet_inline_depth(tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3515
    switch (tp->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3516
    case Null:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3517
      if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset, speculative, depth);
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3518
      // else fall through to AnyNull
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3519
    case TopPTR:
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3520
    case AnyNull: {
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3521
      return make(ptr, klass(), klass_is_exact(),
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3522
                  (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative, depth);
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3523
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3524
    case NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3525
    case BotPTR:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3526
      return TypePtr::make(AnyPtr, ptr, offset, speculative,depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3527
    default: typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3528
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3529
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3530
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3531
  /*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3532
                 A-top         }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3533
               /   |   \       }  Tops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3534
           B-top A-any C-top   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3535
              | /  |  \ |      }  Any-nulls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3536
           B-any   |   C-any   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3537
              |    |    |
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3538
           B-con A-con C-con   } constants; not comparable across classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3539
              |    |    |
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3540
           B-not   |   C-not   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3541
              | \  |  / |      }  not-nulls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3542
           B-bot A-not C-bot   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3543
               \   |   /       }  Bottoms
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3544
                 A-bot         }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3545
  */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3546
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3547
  case InstPtr: {                // Meeting 2 Oops?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3548
    // Found an InstPtr sub-type vs self-InstPtr type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3549
    const TypeInstPtr *tinst = t->is_instptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3550
    int off = meet_offset( tinst->offset() );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3551
    PTR ptr = meet_ptr( tinst->ptr() );
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3552
    int instance_id = meet_instance_id(tinst->instance_id());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3553
    const TypePtr* speculative = xmeet_speculative(tinst);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3554
    int depth = meet_inline_depth(tinst->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3555
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3556
    // Check for easy case; klasses are equal (and perhaps not loaded!)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3557
    // If we have constants, then we created oops so classes are loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3558
    // and we can handle the constants further down.  This case handles
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3559
    // both-not-loaded or both-loaded classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3560
    if (ptr != Constant && klass()->equals(tinst->klass()) && klass_is_exact() == tinst->klass_is_exact()) {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3561
      return make(ptr, klass(), klass_is_exact(), NULL, off, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3562
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3563
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3564
    // Classes require inspection in the Java klass hierarchy.  Must be loaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3565
    ciKlass* tinst_klass = tinst->klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3566
    ciKlass* this_klass  = this->klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3567
    bool tinst_xk = tinst->klass_is_exact();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3568
    bool this_xk  = this->klass_is_exact();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3569
    if (!tinst_klass->is_loaded() || !this_klass->is_loaded() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3570
      // One of these classes has not been loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3571
      const TypeInstPtr *unloaded_meet = xmeet_unloaded(tinst);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3572
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3573
      if( PrintOpto && Verbose ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3574
        tty->print("meet of unloaded classes resulted in: "); unloaded_meet->dump(); tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3575
        tty->print("  this == "); this->dump(); tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3576
        tty->print(" tinst == "); tinst->dump(); tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3577
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3578
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3579
      return unloaded_meet;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3580
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3581
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3582
    // Handle mixing oops and interfaces first.
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3583
    if( this_klass->is_interface() && !(tinst_klass->is_interface() ||
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3584
                                        tinst_klass == ciEnv::current()->Object_klass())) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3585
      ciKlass *tmp = tinst_klass; // Swap interface around
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3586
      tinst_klass = this_klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3587
      this_klass = tmp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3588
      bool tmp2 = tinst_xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3589
      tinst_xk = this_xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3590
      this_xk = tmp2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3591
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3592
    if (tinst_klass->is_interface() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3593
        !(this_klass->is_interface() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3594
          // Treat java/lang/Object as an honorary interface,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3595
          // because we need a bottom for the interface hierarchy.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3596
          this_klass == ciEnv::current()->Object_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3597
      // Oop meets interface!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3598
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3599
      // See if the oop subtypes (implements) interface.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3600
      ciKlass *k;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3601
      bool xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3602
      if( this_klass->is_subtype_of( tinst_klass ) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3603
        // Oop indeed subtypes.  Now keep oop or interface depending
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3604
        // on whether we are both above the centerline or either is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3605
        // below the centerline.  If we are on the centerline
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3606
        // (e.g., Constant vs. AnyNull interface), use the constant.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3607
        k  = below_centerline(ptr) ? tinst_klass : this_klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3608
        // If we are keeping this_klass, keep its exactness too.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3609
        xk = below_centerline(ptr) ? tinst_xk    : this_xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3610
      } else {                  // Does not implement, fall to Object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3611
        // Oop does not implement interface, so mixing falls to Object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3612
        // just like the verifier does (if both are above the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3613
        // centerline fall to interface)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3614
        k = above_centerline(ptr) ? tinst_klass : ciEnv::current()->Object_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3615
        xk = above_centerline(ptr) ? tinst_xk : false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3616
        // Watch out for Constant vs. AnyNull interface.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3617
        if (ptr == Constant)  ptr = NotNull;   // forget it was a constant
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  3618
        instance_id = InstanceBot;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3619
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3620
      ciObject* o = NULL;  // the Constant value, if any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3621
      if (ptr == Constant) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3622
        // Find out which constant.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3623
        o = (this_klass == klass()) ? const_oop() : tinst->const_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3624
      }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3625
      return make(ptr, k, xk, o, off, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3626
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3627
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3628
    // Either oop vs oop or interface vs interface or interface vs Object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3629
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3630
    // !!! Here's how the symmetry requirement breaks down into invariants:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3631
    // If we split one up & one down AND they subtype, take the down man.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3632
    // If we split one up & one down AND they do NOT subtype, "fall hard".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3633
    // If both are up and they subtype, take the subtype class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3634
    // If both are up and they do NOT subtype, "fall hard".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3635
    // If both are down and they subtype, take the supertype class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3636
    // If both are down and they do NOT subtype, "fall hard".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3637
    // Constants treated as down.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3638
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3639
    // Now, reorder the above list; observe that both-down+subtype is also
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3640
    // "fall hard"; "fall hard" becomes the default case:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3641
    // If we split one up & one down AND they subtype, take the down man.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3642
    // If both are up and they subtype, take the subtype class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3643
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3644
    // If both are down and they subtype, "fall hard".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3645
    // If both are down and they do NOT subtype, "fall hard".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3646
    // If both are up and they do NOT subtype, "fall hard".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3647
    // If we split one up & one down AND they do NOT subtype, "fall hard".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3648
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3649
    // If a proper subtype is exact, and we return it, we return it exactly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3650
    // If a proper supertype is exact, there can be no subtyping relationship!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3651
    // If both types are equal to the subtype, exactness is and-ed below the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3652
    // centerline and or-ed above it.  (N.B. Constants are always exact.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3653
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3654
    // Check for subtyping:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3655
    ciKlass *subtype = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3656
    bool subtype_exact = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3657
    if( tinst_klass->equals(this_klass) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3658
      subtype = this_klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3659
      subtype_exact = below_centerline(ptr) ? (this_xk & tinst_xk) : (this_xk | tinst_xk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3660
    } else if( !tinst_xk && this_klass->is_subtype_of( tinst_klass ) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3661
      subtype = this_klass;     // Pick subtyping class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3662
      subtype_exact = this_xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3663
    } else if( !this_xk && tinst_klass->is_subtype_of( this_klass ) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3664
      subtype = tinst_klass;    // Pick subtyping class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3665
      subtype_exact = tinst_xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3666
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3667
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3668
    if( subtype ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3669
      if( above_centerline(ptr) ) { // both are up?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3670
        this_klass = tinst_klass = subtype;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3671
        this_xk = tinst_xk = subtype_exact;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3672
      } else if( above_centerline(this ->_ptr) && !above_centerline(tinst->_ptr) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3673
        this_klass = tinst_klass; // tinst is down; keep down man
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3674
        this_xk = tinst_xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3675
      } else if( above_centerline(tinst->_ptr) && !above_centerline(this ->_ptr) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3676
        tinst_klass = this_klass; // this is down; keep down man
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3677
        tinst_xk = this_xk;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3678
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3679
        this_xk = subtype_exact;  // either they are equal, or we'll do an LCA
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3680
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3681
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3682
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3683
    // Check for classes now being equal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3684
    if (tinst_klass->equals(this_klass)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3685
      // If the klasses are equal, the constants may still differ.  Fall to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3686
      // NotNull if they do (neither constant is NULL; that is a special case
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3687
      // handled elsewhere).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3688
      ciObject* o = NULL;             // Assume not constant when done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3689
      ciObject* this_oop  = const_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3690
      ciObject* tinst_oop = tinst->const_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3691
      if( ptr == Constant ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3692
        if (this_oop != NULL && tinst_oop != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3693
            this_oop->equals(tinst_oop) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3694
          o = this_oop;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3695
        else if (above_centerline(this ->_ptr))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3696
          o = tinst_oop;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3697
        else if (above_centerline(tinst ->_ptr))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3698
          o = this_oop;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3699
        else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3700
          ptr = NotNull;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3701
      }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3702
      return make(ptr, this_klass, this_xk, o, off, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3703
    } // Else classes are not equal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3704
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3705
    // Since klasses are different, we require a LCA in the Java
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3706
    // class hierarchy - which means we have to fall to at least NotNull.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3707
    if( ptr == TopPTR || ptr == AnyNull || ptr == Constant )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3708
      ptr = NotNull;
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3709
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  3710
    instance_id = InstanceBot;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3711
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3712
    // Now we find the LCA of Java classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3713
    ciKlass* k = this_klass->least_common_ancestor(tinst_klass);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3714
    return make(ptr, k, false, NULL, off, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3715
  } // End of case InstPtr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3716
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3717
  } // End of switch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3718
  return this;                  // Return the double constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3719
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3720
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3721
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3722
//------------------------java_mirror_type--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3723
ciType* TypeInstPtr::java_mirror_type() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3724
  // must be a singleton type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3725
  if( const_oop() == NULL )  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3726
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3727
  // must be of type java.lang.Class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3728
  if( klass() != ciEnv::current()->Class_klass() )  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3729
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3730
  return const_oop()->as_instance()->java_mirror_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3731
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3732
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3733
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3734
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3735
// Dual: do NOT dual on klasses.  This means I do NOT understand the Java
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 2021
diff changeset
  3736
// inheritance mechanism.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3737
const Type *TypeInstPtr::xdual() const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3738
  return new TypeInstPtr(dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative(), dual_inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3739
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3741
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3742
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3743
bool TypeInstPtr::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3744
  const TypeInstPtr *p = t->is_instptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3745
  return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3746
    klass()->equals(p->klass()) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3747
    TypeOopPtr::eq(p);          // Check sub-type stuff
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3748
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3749
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3750
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3751
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3752
int TypeInstPtr::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3753
  int hash = klass()->hash() + TypeOopPtr::hash();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3754
  return hash;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3755
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3756
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3757
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3758
// Dump oop Type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3759
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3760
void TypeInstPtr::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3761
  // Print the name of the klass.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3762
  klass()->print_name_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3763
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3764
  switch( _ptr ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3765
  case Constant:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3766
    // TO DO: Make CI print the hex address of the underlying oop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3767
    if (WizardMode || Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3768
      const_oop()->print_oop(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3769
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3770
  case BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3771
    if (!WizardMode && !Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3772
      if( _klass_is_exact ) st->print(":exact");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3773
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3774
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3775
  case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3776
  case AnyNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3777
  case NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3778
    st->print(":%s", ptr_msg[_ptr]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3779
    if( _klass_is_exact ) st->print(":exact");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3780
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3781
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3782
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3783
  if( _offset ) {               // Dump offset, if any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3784
    if( _offset == OffsetBot )      st->print("+any");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3785
    else if( _offset == OffsetTop ) st->print("+unknown");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3786
    else st->print("+%d", _offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3787
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3788
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3789
  st->print(" *");
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3790
  if (_instance_id == InstanceTop)
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3791
    st->print(",iid=top");
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3792
  else if (_instance_id != InstanceBot)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3793
    st->print(",iid=%d",_instance_id);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3794
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3795
  dump_inline_depth(st);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3796
  dump_speculative(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3797
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3798
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3799
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3800
//------------------------------add_offset-------------------------------------
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3801
const TypePtr *TypeInstPtr::add_offset(intptr_t offset) const {
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3802
  return make(_ptr, klass(), klass_is_exact(), const_oop(), xadd_offset(offset),
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3803
              _instance_id, add_offset_speculative(offset), _inline_depth);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3804
}
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3805
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3806
const Type *TypeInstPtr::remove_speculative() const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3807
  if (_speculative == NULL) {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3808
    return this;
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  3809
  }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3810
  assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth");
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3811
  return make(_ptr, klass(), klass_is_exact(), const_oop(), _offset,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3812
              _instance_id, NULL, _inline_depth);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3813
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3814
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3815
const TypePtr *TypeInstPtr::with_inline_depth(int depth) const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3816
  if (!UseInlineDepthForSpeculativeTypes) {
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3817
    return this;
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3818
  }
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3819
  return make(_ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, _speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3820
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3821
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3822
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3823
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3824
const TypeAryPtr *TypeAryPtr::RANGE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3825
const TypeAryPtr *TypeAryPtr::OOPS;
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  3826
const TypeAryPtr *TypeAryPtr::NARROWOOPS;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3827
const TypeAryPtr *TypeAryPtr::BYTES;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3828
const TypeAryPtr *TypeAryPtr::SHORTS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3829
const TypeAryPtr *TypeAryPtr::CHARS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3830
const TypeAryPtr *TypeAryPtr::INTS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3831
const TypeAryPtr *TypeAryPtr::LONGS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3832
const TypeAryPtr *TypeAryPtr::FLOATS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3833
const TypeAryPtr *TypeAryPtr::DOUBLES;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3834
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3835
//------------------------------make-------------------------------------------
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3836
const TypeAryPtr *TypeAryPtr::make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3837
                                   int instance_id, const TypePtr* speculative, int inline_depth) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3838
  assert(!(k == NULL && ary->_elem->isa_int()),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3839
         "integral arrays must be pre-equipped with a class");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3840
  if (!xk)  xk = ary->ary_must_be_exact();
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  3841
  assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3842
  if (!UseExactTypes)  xk = (ptr == Constant);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3843
  return (TypeAryPtr*)(new TypeAryPtr(ptr, NULL, ary, k, xk, offset, instance_id, false, speculative, inline_depth))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3844
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3845
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3846
//------------------------------make-------------------------------------------
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3847
const TypeAryPtr *TypeAryPtr::make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3848
                                   int instance_id, const TypePtr* speculative, int inline_depth,
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3849
                                   bool is_autobox_cache) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3850
  assert(!(k == NULL && ary->_elem->isa_int()),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3851
         "integral arrays must be pre-equipped with a class");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3852
  assert( (ptr==Constant && o) || (ptr!=Constant && !o), "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3853
  if (!xk)  xk = (o != NULL) || ary->ary_must_be_exact();
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  3854
  assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3855
  if (!UseExactTypes)  xk = (ptr == Constant);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3856
  return (TypeAryPtr*)(new TypeAryPtr(ptr, o, ary, k, xk, offset, instance_id, is_autobox_cache, speculative, inline_depth))->hashcons();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3857
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3858
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3859
//------------------------------cast_to_ptr_type-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3860
const Type *TypeAryPtr::cast_to_ptr_type(PTR ptr) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3861
  if( ptr == _ptr ) return this;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3862
  return make(ptr, const_oop(), _ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3863
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3864
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3865
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3866
//-----------------------------cast_to_exactness-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3867
const Type *TypeAryPtr::cast_to_exactness(bool klass_is_exact) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3868
  if( klass_is_exact == _klass_is_exact ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3869
  if (!UseExactTypes)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3870
  if (_ary->ary_must_be_exact())  return this;  // cannot clear xk
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3871
  return make(ptr(), const_oop(), _ary, klass(), klass_is_exact, _offset, _instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3872
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3873
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  3874
//-----------------------------cast_to_instance_id----------------------------
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3875
const TypeOopPtr *TypeAryPtr::cast_to_instance_id(int instance_id) const {
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  3876
  if( instance_id == _instance_id ) return this;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3877
  return make(_ptr, const_oop(), _ary, klass(), _klass_is_exact, _offset, instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3878
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3879
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3880
//-----------------------------narrow_size_type-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3881
// Local cache for arrayOopDesc::max_array_length(etype),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3882
// which is kind of slow (and cached elsewhere by other users).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3883
static jint max_array_length_cache[T_CONFLICT+1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3884
static jint max_array_length(BasicType etype) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3885
  jint& cache = max_array_length_cache[etype];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3886
  jint res = cache;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3887
  if (res == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3888
    switch (etype) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  3889
    case T_NARROWOOP:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  3890
      etype = T_OBJECT;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  3891
      break;
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  3892
    case T_NARROWKLASS:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3893
    case T_CONFLICT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3894
    case T_ILLEGAL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3895
    case T_VOID:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3896
      etype = T_BYTE;           // will produce conservatively high value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3897
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3898
    cache = res = arrayOopDesc::max_array_length(etype);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3899
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3900
  return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3901
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3902
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3903
// Narrow the given size type to the index range for the given array base type.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3904
// Return NULL if the resulting int type becomes empty.
1398
342890a5d031 6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
parents: 1068
diff changeset
  3905
const TypeInt* TypeAryPtr::narrow_size_type(const TypeInt* size) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3906
  jint hi = size->_hi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3907
  jint lo = size->_lo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3908
  jint min_lo = 0;
1398
342890a5d031 6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
parents: 1068
diff changeset
  3909
  jint max_hi = max_array_length(elem()->basic_type());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3910
  //if (index_not_size)  --max_hi;     // type of a valid array index, FTR
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3911
  bool chg = false;
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3912
  if (lo < min_lo) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3913
    lo = min_lo;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3914
    if (size->is_con()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3915
      hi = lo;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3916
    }
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3917
    chg = true;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3918
  }
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3919
  if (hi > max_hi) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3920
    hi = max_hi;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3921
    if (size->is_con()) {
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3922
      lo = hi;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3923
    }
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3924
    chg = true;
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 16361
diff changeset
  3925
  }
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 2021
diff changeset
  3926
  // Negative length arrays will produce weird intermediate dead fast-path code
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3927
  if (lo > hi)
1398
342890a5d031 6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
parents: 1068
diff changeset
  3928
    return TypeInt::ZERO;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3929
  if (!chg)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3930
    return size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3931
  return TypeInt::make(lo, hi, Type::WidenMin);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3932
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3933
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3934
//-------------------------------cast_to_size----------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3935
const TypeAryPtr* TypeAryPtr::cast_to_size(const TypeInt* new_size) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3936
  assert(new_size != NULL, "");
1398
342890a5d031 6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
parents: 1068
diff changeset
  3937
  new_size = narrow_size_type(new_size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3938
  if (new_size == size())  return this;
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3939
  const TypeAry* new_ary = TypeAry::make(elem(), new_size, is_stable());
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  3940
  return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative, _inline_depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3941
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3942
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3943
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3944
//------------------------------cast_to_stable---------------------------------
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3945
const TypeAryPtr* TypeAryPtr::cast_to_stable(bool stable, int stable_dimension) const {
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3946
  if (stable_dimension <= 0 || (stable_dimension == 1 && stable == this->is_stable()))
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3947
    return this;
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3948
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3949
  const Type* elem = this->elem();
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3950
  const TypePtr* elem_ptr = elem->make_ptr();
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3951
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3952
  if (stable_dimension > 1 && elem_ptr != NULL && elem_ptr->isa_aryptr()) {
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3953
    // If this is widened from a narrow oop, TypeAry::make will re-narrow it.
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3954
    elem = elem_ptr = elem_ptr->is_aryptr()->cast_to_stable(stable, stable_dimension - 1);
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3955
  }
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3956
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3957
  const TypeAry* new_ary = TypeAry::make(elem, size(), stable);
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3958
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  3959
  return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative, _inline_depth);
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3960
}
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3961
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3962
//-----------------------------stable_dimension--------------------------------
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3963
int TypeAryPtr::stable_dimension() const {
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3964
  if (!is_stable())  return 0;
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3965
  int dim = 1;
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3966
  const TypePtr* elem_ptr = elem()->make_ptr();
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3967
  if (elem_ptr != NULL && elem_ptr->isa_aryptr())
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3968
    dim += elem_ptr->is_aryptr()->stable_dimension();
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3969
  return dim;
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3970
}
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  3971
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3972
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3973
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3974
bool TypeAryPtr::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3975
  const TypeAryPtr *p = t->is_aryptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3976
  return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3977
    _ary == p->_ary &&  // Check array
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3978
    TypeOopPtr::eq(p);  // Check sub-parts
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3979
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3980
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3981
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3982
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3983
int TypeAryPtr::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3984
  return (intptr_t)_ary + TypeOopPtr::hash();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3985
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3986
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3987
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3988
// Compute the MEET of two types.  It returns a new Type object.
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  3989
const Type *TypeAryPtr::xmeet_helper(const Type *t) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3990
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3991
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3992
  // Current "this->_base" is Pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3993
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3994
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3995
  // Mixing ints & oops happens when javac reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3996
  case Int:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3997
  case Long:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3998
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3999
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4000
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4001
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4002
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4003
  case DoubleBot:
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4004
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4005
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4006
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4007
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4008
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4009
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4010
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4011
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4012
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4014
  case OopPtr: {                // Meeting to OopPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4015
    // Found a OopPtr type vs self-AryPtr type
3805
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  4016
    const TypeOopPtr *tp = t->is_oopptr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4017
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4018
    PTR ptr = meet_ptr(tp->ptr());
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4019
    int depth = meet_inline_depth(tp->inline_depth());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4020
    const TypePtr* speculative = xmeet_speculative(tp);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4021
    switch (tp->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4022
    case TopPTR:
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4023
    case AnyNull: {
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4024
      int instance_id = meet_instance_id(InstanceTop);
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4025
      return make(ptr, (ptr == Constant ? const_oop() : NULL),
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4026
                  _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth);
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4027
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4028
    case BotPTR:
3805
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  4029
    case NotNull: {
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  4030
      int instance_id = meet_instance_id(tp->instance_id());
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4031
      return TypeOopPtr::make(ptr, offset, instance_id, speculative, depth);
3805
3cddd4882151 6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents: 3180
diff changeset
  4032
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4033
    default: ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4034
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4035
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4036
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4037
  case AnyPtr: {                // Meeting two AnyPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4038
    // Found an AnyPtr type vs self-AryPtr type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4039
    const TypePtr *tp = t->is_ptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4040
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4041
    PTR ptr = meet_ptr(tp->ptr());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4042
    const TypePtr* speculative = xmeet_speculative(tp);
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4043
    int depth = meet_inline_depth(tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4044
    switch (tp->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4045
    case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4046
      return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4047
    case BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4048
    case NotNull:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4049
      return TypePtr::make(AnyPtr, ptr, offset, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4050
    case Null:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4051
      if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset, speculative, depth);
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4052
      // else fall through to AnyNull
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4053
    case AnyNull: {
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4054
      int instance_id = meet_instance_id(InstanceTop);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4055
      return make(ptr, (ptr == Constant ? const_oop() : NULL),
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4056
                  _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth);
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4057
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4058
    default: ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4059
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4060
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4061
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4062
  case MetadataPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4063
  case KlassPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4064
  case RawPtr: return TypePtr::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4065
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4066
  case AryPtr: {                // Meeting 2 references?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4067
    const TypeAryPtr *tap = t->is_aryptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4068
    int off = meet_offset(tap->offset());
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4069
    const TypeAry *tary = _ary->meet_speculative(tap->_ary)->is_ary();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4070
    PTR ptr = meet_ptr(tap->ptr());
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4071
    int instance_id = meet_instance_id(tap->instance_id());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4072
    const TypePtr* speculative = xmeet_speculative(tap);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4073
    int depth = meet_inline_depth(tap->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4074
    ciKlass* lazy_klass = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4075
    if (tary->_elem->isa_int()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4076
      // Integral array element types have irrelevant lattice relations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4077
      // It is the klass that determines array layout, not the element type.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4078
      if (_klass == NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4079
        lazy_klass = tap->_klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4080
      else if (tap->_klass == NULL || tap->_klass == _klass) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4081
        lazy_klass = _klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4082
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4083
        // Something like byte[int+] meets char[int+].
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4084
        // This must fall to bottom, not (int[-128..65535])[int+].
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  4085
        instance_id = InstanceBot;
19770
7cb9f982ea81 8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents: 17383
diff changeset
  4086
        tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4087
      }
8670
1f805a0c20e5 6589823: Error: meet not symmetric
kvn
parents: 7886
diff changeset
  4088
    } else // Non integral arrays.
22239
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4089
      // Must fall to bottom if exact klasses in upper lattice
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4090
      // are not equal or super klass is exact.
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4091
      if ((above_centerline(ptr) || ptr == Constant) && klass() != tap->klass() &&
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4092
          // meet with top[] and bottom[] are processed further down:
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4093
          tap->_klass != NULL  && this->_klass != NULL   &&
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4094
          // both are exact and not equal:
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4095
          ((tap->_klass_is_exact && this->_klass_is_exact) ||
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4096
           // 'tap'  is exact and super or unrelated:
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4097
           (tap->_klass_is_exact && !tap->klass()->is_subtype_of(klass())) ||
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4098
           // 'this' is exact and super or unrelated:
a7ea670834f4 8027571: fatal error: meet not symmetric
roland
parents: 21202
diff changeset
  4099
           (this->_klass_is_exact && !klass()->is_subtype_of(tap->klass())))) {
30210
507826ef56fd 8075587: Compilation of constant array containing different sub classes crashes the JVM
roland
parents: 29346
diff changeset
  4100
      if (above_centerline(ptr)) {
507826ef56fd 8075587: Compilation of constant array containing different sub classes crashes the JVM
roland
parents: 29346
diff changeset
  4101
        tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable);
507826ef56fd 8075587: Compilation of constant array containing different sub classes crashes the JVM
roland
parents: 29346
diff changeset
  4102
      }
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4103
      return make(NotNull, NULL, tary, lazy_klass, false, off, InstanceBot, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4104
    }
8670
1f805a0c20e5 6589823: Error: meet not symmetric
kvn
parents: 7886
diff changeset
  4105
6435
ef0a074fdf62 6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents: 6431
diff changeset
  4106
    bool xk = false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4107
    switch (tap->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4108
    case AnyNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4109
    case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4110
      // Compute new klass on demand, do not use tap->_klass
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4111
      if (below_centerline(this->_ptr)) {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4112
        xk = this->_klass_is_exact;
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4113
      } else {
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4114
        xk = (tap->_klass_is_exact | this->_klass_is_exact);
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4115
      }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4116
      return make(ptr, const_oop(), tary, lazy_klass, xk, off, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4117
    case Constant: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4118
      ciObject* o = const_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4119
      if( _ptr == Constant ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4120
        if( tap->const_oop() != NULL && !o->equals(tap->const_oop()) ) {
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3805
diff changeset
  4121
          xk = (klass() == tap->klass());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4122
          ptr = NotNull;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4123
          o = NULL;
955
723d7b577fba 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 781
diff changeset
  4124
          instance_id = InstanceBot;
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3805
diff changeset
  4125
        } else {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3805
diff changeset
  4126
          xk = true;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4127
        }
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4128
      } else if(above_centerline(_ptr)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4129
        o = tap->const_oop();
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3805
diff changeset
  4130
        xk = true;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3805
diff changeset
  4131
      } else {
6435
ef0a074fdf62 6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents: 6431
diff changeset
  4132
        // Only precise for identical arrays
ef0a074fdf62 6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents: 6431
diff changeset
  4133
        xk = this->_klass_is_exact && (klass() == tap->klass());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4134
      }
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4135
      return TypeAryPtr::make(ptr, o, tary, lazy_klass, xk, off, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4136
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4137
    case NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4138
    case BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4139
      // Compute new klass on demand, do not use tap->_klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4140
      if (above_centerline(this->_ptr))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4141
            xk = tap->_klass_is_exact;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4142
      else  xk = (tap->_klass_is_exact & this->_klass_is_exact) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4143
              (klass() == tap->klass()); // Only precise for identical arrays
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4144
      return TypeAryPtr::make(ptr, NULL, tary, lazy_klass, xk, off, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4145
    default: ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4146
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4147
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4149
  // All arrays inherit from Object class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4150
  case InstPtr: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4151
    const TypeInstPtr *tp = t->is_instptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4152
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4153
    PTR ptr = meet_ptr(tp->ptr());
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4154
    int instance_id = meet_instance_id(tp->instance_id());
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4155
    const TypePtr* speculative = xmeet_speculative(tp);
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4156
    int depth = meet_inline_depth(tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4157
    switch (ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4158
    case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4159
    case AnyNull:                // Fall 'down' to dual of object klass
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4160
      // For instances when a subclass meets a superclass we fall
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4161
      // below the centerline when the superclass is exact. We need to
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4162
      // do the same here.
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4163
      if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4164
        return TypeAryPtr::make(ptr, _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4165
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4166
        // cannot subclass, so the meet has to fall badly below the centerline
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4167
        ptr = NotNull;
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4168
        instance_id = InstanceBot;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4169
        return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4170
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4171
    case Constant:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4172
    case NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4173
    case BotPTR:                // Fall down to object klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4174
      // LCA is object_klass, but if we subclass from the top we can do better
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4175
      if (above_centerline(tp->ptr())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4176
        // If 'tp'  is above the centerline and it is Object class
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 2021
diff changeset
  4177
        // then we can subclass in the Java class hierarchy.
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4178
        // For instances when a subclass meets a superclass we fall
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4179
        // below the centerline when the superclass is exact. We need
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4180
        // to do the same here.
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4181
        if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4182
          // that is, my array type is a subtype of 'tp' klass
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4183
          return make(ptr, (ptr == Constant ? const_oop() : NULL),
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4184
                      _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4185
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4186
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4187
      // The other case cannot happen, since t cannot be a subtype of an array.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4188
      // The meet falls down to Object class below centerline.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4189
      if( ptr == Constant )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4190
         ptr = NotNull;
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4191
      instance_id = InstanceBot;
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4192
      return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative, depth);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4193
    default: typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4194
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4195
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4196
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4197
  return this;                  // Lint noise
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4198
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4199
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4200
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4201
// Dual: compute field-by-field dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4202
const Type *TypeAryPtr::xdual() const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4203
  return new TypeAryPtr(dual_ptr(), _const_oop, _ary->dual()->is_ary(),_klass, _klass_is_exact, dual_offset(), dual_instance_id(), is_autobox_cache(), dual_speculative(), dual_inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4204
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4205
3173
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4206
//----------------------interface_vs_oop---------------------------------------
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4207
#ifdef ASSERT
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4208
bool TypeAryPtr::interface_vs_oop(const Type *t) const {
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4209
  const TypeAryPtr* t_aryptr = t->isa_aryptr();
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4210
  if (t_aryptr) {
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4211
    return _ary->interface_vs_oop(t_aryptr->_ary);
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4212
  }
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4213
  return false;
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4214
}
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4215
#endif
c15503e54406 6837094: False positive for "meet not symmetric" failure
kvn
parents: 2154
diff changeset
  4216
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4217
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4218
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4219
void TypeAryPtr::dump2( Dict &d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4220
  _ary->dump2(d,depth,st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4221
  switch( _ptr ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4222
  case Constant:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4223
    const_oop()->print(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4224
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4225
  case BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4226
    if (!WizardMode && !Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4227
      if( _klass_is_exact ) st->print(":exact");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4228
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4229
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4230
  case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4231
  case AnyNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4232
  case NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4233
    st->print(":%s", ptr_msg[_ptr]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4234
    if( _klass_is_exact ) st->print(":exact");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4235
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4236
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4237
237
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4238
  if( _offset != 0 ) {
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4239
    int header_size = objArrayOopDesc::header_size() * wordSize;
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4240
    if( _offset == OffsetTop )       st->print("+undefined");
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4241
    else if( _offset == OffsetBot )  st->print("+any");
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4242
    else if( _offset < header_size ) st->print("+%d", _offset);
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4243
    else {
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4244
      BasicType basic_elem_type = elem()->basic_type();
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4245
      int array_base = arrayOopDesc::base_offset_in_bytes(basic_elem_type);
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4246
      int elem_size = type2aelembytes(basic_elem_type);
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4247
      st->print("[%d]", (_offset - array_base)/elem_size);
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4248
    }
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4249
  }
fba97e902303 6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents: 1
diff changeset
  4250
  st->print(" *");
769
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4251
  if (_instance_id == InstanceTop)
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4252
    st->print(",iid=top");
78e5090c7a20 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 767
diff changeset
  4253
  else if (_instance_id != InstanceBot)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4254
    st->print(",iid=%d",_instance_id);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4255
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4256
  dump_inline_depth(st);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4257
  dump_speculative(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4258
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4259
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4260
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4261
bool TypeAryPtr::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4262
  if (_ary->empty())       return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4263
  return TypeOopPtr::empty();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4264
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4265
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4266
//------------------------------add_offset-------------------------------------
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4267
const TypePtr *TypeAryPtr::add_offset(intptr_t offset) const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4268
  return make(_ptr, _const_oop, _ary, _klass, _klass_is_exact, xadd_offset(offset), _instance_id, add_offset_speculative(offset), _inline_depth);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4269
}
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4270
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4271
const Type *TypeAryPtr::remove_speculative() const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4272
  if (_speculative == NULL) {
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4273
    return this;
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4274
  }
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4275
  assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth");
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4276
  return make(_ptr, _const_oop, _ary->remove_speculative()->is_ary(), _klass, _klass_is_exact, _offset, _instance_id, NULL, _inline_depth);
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4277
}
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4278
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4279
const TypePtr *TypeAryPtr::with_inline_depth(int depth) const {
22928
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4280
  if (!UseInlineDepthForSpeculativeTypes) {
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4281
    return this;
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4282
  }
b2bb101a9ae3 8031754: Type speculation should favor profile data from outermost inlined method
roland
parents: 22911
diff changeset
  4283
  return make(_ptr, _const_oop, _ary->remove_speculative()->is_ary(), _klass, _klass_is_exact, _offset, _instance_id, _speculative, depth);
21099
46e6bbecd9e5 8024070: C2 needs some form of type speculation
roland
parents: 20289
diff changeset
  4284
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4285
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4286
//=============================================================================
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4287
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4288
//------------------------------hash-------------------------------------------
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4289
// Type-specific hashing function.
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4290
int TypeNarrowPtr::hash(void) const {
3180
c589129153a4 6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents: 3173
diff changeset
  4291
  return _ptrtype->hash() + 7;
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4292
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4293
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4294
bool TypeNarrowPtr::singleton(void) const {    // TRUE if type is a singleton
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4295
  return _ptrtype->singleton();
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4296
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4297
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4298
bool TypeNarrowPtr::empty(void) const {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4299
  return _ptrtype->empty();
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4300
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4301
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4302
intptr_t TypeNarrowPtr::get_con() const {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4303
  return _ptrtype->get_con();
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4304
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4305
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4306
bool TypeNarrowPtr::eq( const Type *t ) const {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4307
  const TypeNarrowPtr* tc = isa_same_narrowptr(t);
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4308
  if (tc != NULL) {
3180
c589129153a4 6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents: 3173
diff changeset
  4309
    if (_ptrtype->base() != tc->_ptrtype->base()) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4310
      return false;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4311
    }
3180
c589129153a4 6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents: 3173
diff changeset
  4312
    return tc->_ptrtype->eq(_ptrtype);
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4313
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4314
  return false;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4315
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4316
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4317
const Type *TypeNarrowPtr::xdual() const {    // Compute dual right now.
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4318
  const TypePtr* odual = _ptrtype->dual()->is_ptr();
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4319
  return make_same_narrowptr(odual);
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4320
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4321
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4322
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4323
const Type *TypeNarrowPtr::filter_helper(const Type *kills, bool include_speculative) const {
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4324
  if (isa_same_narrowptr(kills)) {
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4325
    const Type* ft =_ptrtype->filter_helper(is_same_narrowptr(kills)->_ptrtype, include_speculative);
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4326
    if (ft->empty())
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4327
      return Type::TOP;           // Canonical empty value
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4328
    if (ft->isa_ptr()) {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4329
      return make_hash_same_narrowptr(ft->isa_ptr());
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4330
    }
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4331
    return ft;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4332
  } else if (kills->isa_ptr()) {
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4333
    const Type* ft = _ptrtype->join_helper(kills, include_speculative);
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4334
    if (ft->empty())
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4335
      return Type::TOP;           // Canonical empty value
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4336
    return ft;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4337
  } else {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4338
    return Type::TOP;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4339
  }
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4340
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4341
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4342
//------------------------------xmeet------------------------------------------
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4343
// Compute the MEET of two types.  It returns a new Type object.
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4344
const Type *TypeNarrowPtr::xmeet( const Type *t ) const {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4345
  // Perform a fast test for common case; meeting the same types together.
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4346
  if( this == t ) return this;  // Meeting same type-rep?
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4347
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4348
  if (t->base() == base()) {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4349
    const Type* result = _ptrtype->xmeet(t->make_ptr());
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4350
    if (result->isa_ptr()) {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4351
      return make_hash_same_narrowptr(result->is_ptr());
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4352
    }
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4353
    return result;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4354
  }
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4355
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4356
  // Current "this->_base" is NarrowKlass or NarrowOop
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4357
  switch (t->base()) {          // switch on original type
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4358
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4359
  case Int:                     // Mixing ints & oops happens when javac
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4360
  case Long:                    // reuses local variables
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4361
  case FloatTop:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4362
  case FloatCon:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4363
  case FloatBot:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4364
  case DoubleTop:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4365
  case DoubleCon:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4366
  case DoubleBot:
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4367
  case AnyPtr:
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4368
  case RawPtr:
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4369
  case OopPtr:
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4370
  case InstPtr:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4371
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4372
  case MetadataPtr:
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4373
  case KlassPtr:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4374
  case NarrowOop:
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4375
  case NarrowKlass:
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4376
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4377
  case Bottom:                  // Ye Olde Default
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4378
    return Type::BOTTOM;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4379
  case Top:
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4380
    return this;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4381
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4382
  default:                      // All else is a mistake
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4383
    typerr(t);
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4384
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4385
  } // End of switch
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4386
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4387
  return this;
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4388
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4389
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4390
#ifndef PRODUCT
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4391
void TypeNarrowPtr::dump2( Dict & d, uint depth, outputStream *st ) const {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4392
  _ptrtype->dump2(d, depth, st);
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4393
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4394
#endif
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4395
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4396
const TypeNarrowOop *TypeNarrowOop::BOTTOM;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4397
const TypeNarrowOop *TypeNarrowOop::NULL_PTR;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4398
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4399
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4400
const TypeNarrowOop* TypeNarrowOop::make(const TypePtr* type) {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4401
  return (const TypeNarrowOop*)(new TypeNarrowOop(type))->hashcons();
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4402
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4403
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4404
const Type* TypeNarrowOop::remove_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4405
  return make(_ptrtype->remove_speculative()->is_ptr());
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4406
}
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4407
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4408
const Type* TypeNarrowOop::cleanup_speculative() const {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4409
  return make(_ptrtype->cleanup_speculative()->is_ptr());
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4410
}
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4411
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4412
#ifndef PRODUCT
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4413
void TypeNarrowOop::dump2( Dict & d, uint depth, outputStream *st ) const {
1497
cd3234c89e59 6764622: IdealGraphVisualizer fixes
never
parents: 1398
diff changeset
  4414
  st->print("narrowoop: ");
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4415
  TypeNarrowPtr::dump2(d, depth, st);
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4416
}
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4417
#endif
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4418
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4419
const TypeNarrowKlass *TypeNarrowKlass::NULL_PTR;
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4420
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4421
const TypeNarrowKlass* TypeNarrowKlass::make(const TypePtr* type) {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4422
  return (const TypeNarrowKlass*)(new TypeNarrowKlass(type))->hashcons();
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4423
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4424
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4425
#ifndef PRODUCT
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4426
void TypeNarrowKlass::dump2( Dict & d, uint depth, outputStream *st ) const {
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4427
  st->print("narrowklass: ");
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4428
  TypeNarrowPtr::dump2(d, depth, st);
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4429
}
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4430
#endif
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4431
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4432
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4433
//------------------------------eq---------------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4434
// Structural equality check for Type representations
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4435
bool TypeMetadataPtr::eq( const Type *t ) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4436
  const TypeMetadataPtr *a = (const TypeMetadataPtr*)t;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4437
  ciMetadata* one = metadata();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4438
  ciMetadata* two = a->metadata();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4439
  if (one == NULL || two == NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4440
    return (one == two) && TypePtr::eq(t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4441
  } else {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4442
    return one->equals(two) && TypePtr::eq(t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4443
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4444
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4445
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4446
//------------------------------hash-------------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4447
// Type-specific hashing function.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4448
int TypeMetadataPtr::hash(void) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4449
  return
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4450
    (metadata() ? metadata()->hash() : 0) +
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4451
    TypePtr::hash();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4452
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4453
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4454
//------------------------------singleton--------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4455
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4456
// constants
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4457
bool TypeMetadataPtr::singleton(void) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4458
  // detune optimizer to not generate constant metadta + constant offset as a constant!
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4459
  // TopPTR, Null, AnyNull, Constant are all singletons
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4460
  return (_offset == 0) && !below_centerline(_ptr);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4461
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4462
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4463
//------------------------------add_offset-------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4464
const TypePtr *TypeMetadataPtr::add_offset( intptr_t offset ) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4465
  return make( _ptr, _metadata, xadd_offset(offset));
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4466
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4467
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4468
//-----------------------------filter------------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4469
// Do not allow interface-vs.-noninterface joins to collapse to top.
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4470
const Type *TypeMetadataPtr::filter_helper(const Type *kills, bool include_speculative) const {
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4471
  const TypeMetadataPtr* ft = join_helper(kills, include_speculative)->isa_metadataptr();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4472
  if (ft == NULL || ft->empty())
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4473
    return Type::TOP;           // Canonical empty value
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4474
  return ft;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4475
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4476
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4477
 //------------------------------get_con----------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4478
intptr_t TypeMetadataPtr::get_con() const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4479
  assert( _ptr == Null || _ptr == Constant, "" );
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4480
  assert( _offset >= 0, "" );
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4481
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4482
  if (_offset != 0) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4483
    // After being ported to the compiler interface, the compiler no longer
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4484
    // directly manipulates the addresses of oops.  Rather, it only has a pointer
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4485
    // to a handle at compile time.  This handle is embedded in the generated
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4486
    // code and dereferenced at the time the nmethod is made.  Until that time,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4487
    // it is not reasonable to do arithmetic with the addresses of oops (we don't
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4488
    // have access to the addresses!).  This does not seem to currently happen,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4489
    // but this assertion here is to help prevent its occurence.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4490
    tty->print_cr("Found oop constant with non-zero offset");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4491
    ShouldNotReachHere();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4492
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4493
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4494
  return (intptr_t)metadata()->constant_encoding();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4495
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4496
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4497
//------------------------------cast_to_ptr_type-------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4498
const Type *TypeMetadataPtr::cast_to_ptr_type(PTR ptr) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4499
  if( ptr == _ptr ) return this;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4500
  return make(ptr, metadata(), _offset);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4501
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4502
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4503
//------------------------------meet-------------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4504
// Compute the MEET of two types.  It returns a new Type object.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4505
const Type *TypeMetadataPtr::xmeet( const Type *t ) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4506
  // Perform a fast test for common case; meeting the same types together.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4507
  if( this == t ) return this;  // Meeting same type-rep?
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4508
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4509
  // Current "this->_base" is OopPtr
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4510
  switch (t->base()) {          // switch on original type
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4511
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4512
  case Int:                     // Mixing ints & oops happens when javac
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4513
  case Long:                    // reuses local variables
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4514
  case FloatTop:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4515
  case FloatCon:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4516
  case FloatBot:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4517
  case DoubleTop:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4518
  case DoubleCon:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4519
  case DoubleBot:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4520
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4521
  case NarrowKlass:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4522
  case Bottom:                  // Ye Olde Default
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4523
    return Type::BOTTOM;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4524
  case Top:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4525
    return this;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4526
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4527
  default:                      // All else is a mistake
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4528
    typerr(t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4529
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4530
  case AnyPtr: {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4531
    // Found an AnyPtr type vs self-OopPtr type
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4532
    const TypePtr *tp = t->is_ptr();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4533
    int offset = meet_offset(tp->offset());
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4534
    PTR ptr = meet_ptr(tp->ptr());
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4535
    switch (tp->ptr()) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4536
    case Null:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4537
      if (ptr == Null)  return TypePtr::make(AnyPtr, ptr, offset, tp->speculative(), tp->inline_depth());
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4538
      // else fall through:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4539
    case TopPTR:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4540
    case AnyNull: {
23491
f690330b10b9 8031320: Use Intel RTM instructions for locks
kvn
parents: 22928
diff changeset
  4541
      return make(ptr, _metadata, offset);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4542
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4543
    case BotPTR:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4544
    case NotNull:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4545
      return TypePtr::make(AnyPtr, ptr, offset, tp->speculative(), tp->inline_depth());
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4546
    default: typerr(t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4547
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4548
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4549
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4550
  case RawPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4551
  case KlassPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4552
  case OopPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4553
  case InstPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4554
  case AryPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4555
    return TypePtr::BOTTOM;     // Oop meet raw is not well defined
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4556
13731
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4557
  case MetadataPtr: {
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4558
    const TypeMetadataPtr *tp = t->is_metadataptr();
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4559
    int offset = meet_offset(tp->offset());
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4560
    PTR tptr = tp->ptr();
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4561
    PTR ptr = meet_ptr(tptr);
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4562
    ciMetadata* md = (tptr == TopPTR) ? metadata() : tp->metadata();
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4563
    if (tptr == TopPTR || _ptr == TopPTR ||
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4564
        metadata()->equals(tp->metadata())) {
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4565
      return make(ptr, md, offset);
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4566
    }
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4567
    // metadata is different
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4568
    if( ptr == Constant ) {  // Cannot be equal constants, so...
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4569
      if( tptr == Constant && _ptr != Constant)  return t;
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4570
      if( _ptr == Constant && tptr != Constant)  return this;
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4571
      ptr = NotNull;            // Fall down in lattice
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4572
    }
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4573
    return make(ptr, NULL, offset);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4574
    break;
13731
6c79c797ca4c 7184649: NPG: Implement another MetdataPtr case
roland
parents: 13728
diff changeset
  4575
  }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4576
  } // End of switch
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4577
  return this;                  // Return the double constant
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4578
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4579
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4580
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4581
//------------------------------xdual------------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4582
// Dual of a pure metadata pointer.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4583
const Type *TypeMetadataPtr::xdual() const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4584
  return new TypeMetadataPtr(dual_ptr(), metadata(), dual_offset());
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4585
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4586
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4587
//------------------------------dump2------------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4588
#ifndef PRODUCT
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4589
void TypeMetadataPtr::dump2( Dict &d, uint depth, outputStream *st ) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4590
  st->print("metadataptr:%s", ptr_msg[_ptr]);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4591
  if( metadata() ) st->print(INTPTR_FORMAT, metadata());
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4592
  switch( _offset ) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4593
  case OffsetTop: st->print("+top"); break;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4594
  case OffsetBot: st->print("+any"); break;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4595
  case         0: break;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4596
  default:        st->print("+%d",_offset); break;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4597
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4598
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4599
#endif
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4600
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4601
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4602
//=============================================================================
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4603
// Convenience common pre-built type.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4604
const TypeMetadataPtr *TypeMetadataPtr::BOTTOM;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4605
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4606
TypeMetadataPtr::TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset):
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4607
  TypePtr(MetadataPtr, ptr, offset), _metadata(metadata) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4608
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4609
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4610
const TypeMetadataPtr* TypeMetadataPtr::make(ciMethod* m) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4611
  return make(Constant, m, 0);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4612
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4613
const TypeMetadataPtr* TypeMetadataPtr::make(ciMethodData* m) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4614
  return make(Constant, m, 0);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4615
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4616
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4617
//------------------------------make-------------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4618
// Create a meta data constant
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4619
const TypeMetadataPtr *TypeMetadataPtr::make(PTR ptr, ciMetadata* m, int offset) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4620
  assert(m == NULL || !m->is_klass(), "wrong type");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4621
  return (TypeMetadataPtr*)(new TypeMetadataPtr(ptr, m, offset))->hashcons();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4622
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4623
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4624
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4625
//=============================================================================
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4626
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4627
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4628
// Not-null object klass or below
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4629
const TypeKlassPtr *TypeKlassPtr::OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4630
const TypeKlassPtr *TypeKlassPtr::OBJECT_OR_NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4631
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4632
//------------------------------TypeKlassPtr-----------------------------------
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4633
TypeKlassPtr::TypeKlassPtr( PTR ptr, ciKlass* klass, int offset )
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4634
  : TypePtr(KlassPtr, ptr, offset), _klass(klass), _klass_is_exact(ptr == Constant) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4635
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4636
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4637
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4638
// ptr to klass 'k', if Constant, or possibly to a sub-klass if not a Constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4639
const TypeKlassPtr *TypeKlassPtr::make( PTR ptr, ciKlass* k, int offset ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4640
  assert( k != NULL, "Expect a non-NULL klass");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4641
  assert(k->is_instance_klass() || k->is_array_klass(), "Incorrect type of klass oop");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4642
  TypeKlassPtr *r =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4643
    (TypeKlassPtr*)(new TypeKlassPtr(ptr, k, offset))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4644
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4645
  return r;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4646
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4647
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4648
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4649
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4650
bool TypeKlassPtr::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4651
  const TypeKlassPtr *p = t->is_klassptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4652
  return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4653
    klass()->equals(p->klass()) &&
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4654
    TypePtr::eq(p);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4655
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4656
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4657
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4658
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4659
int TypeKlassPtr::hash(void) const {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4660
  return klass()->hash() + TypePtr::hash();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4661
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4662
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4663
//------------------------------singleton--------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4664
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4665
// constants
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4666
bool TypeKlassPtr::singleton(void) const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4667
  // detune optimizer to not generate constant klass + constant offset as a constant!
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4668
  // TopPTR, Null, AnyNull, Constant are all singletons
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4669
  return (_offset == 0) && !below_centerline(_ptr);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4670
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4671
21202
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4672
// Do not allow interface-vs.-noninterface joins to collapse to top.
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4673
const Type *TypeKlassPtr::filter_helper(const Type *kills, bool include_speculative) const {
21202
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4674
  // logic here mirrors the one from TypeOopPtr::filter. See comments
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4675
  // there.
22799
83e58bac7980 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents: 22239
diff changeset
  4676
  const Type* ft = join_helper(kills, include_speculative);
21202
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4677
  const TypeKlassPtr* ftkp = ft->isa_klassptr();
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4678
  const TypeKlassPtr* ktkp = kills->isa_klassptr();
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4679
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4680
  if (ft->empty()) {
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4681
    if (!empty() && ktkp != NULL && ktkp->klass()->is_loaded() && ktkp->klass()->is_interface())
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4682
      return kills;             // Uplift to interface
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4683
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4684
    return Type::TOP;           // Canonical empty value
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4685
  }
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4686
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4687
  // Interface klass type could be exact in opposite to interface type,
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4688
  // return it here instead of incorrect Constant ptr J/L/Object (6894807).
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4689
  if (ftkp != NULL && ktkp != NULL &&
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4690
      ftkp->is_loaded() &&  ftkp->klass()->is_interface() &&
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4691
      !ftkp->klass_is_exact() && // Keep exact interface klass
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4692
      ktkp->is_loaded() && !ktkp->klass()->is_interface()) {
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4693
    return ktkp->cast_to_ptr_type(ftkp->ptr());
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4694
  }
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4695
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4696
  return ft;
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4697
}
0356e40b1017 8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents: 21105
diff changeset
  4698
6431
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4699
//----------------------compute_klass------------------------------------------
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4700
// Compute the defining klass for this class
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4701
ciKlass* TypeAryPtr::compute_klass(DEBUG_ONLY(bool verify)) const {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4702
  // Compute _klass based on element type.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4703
  ciKlass* k_ary = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4704
  const TypeInstPtr *tinst;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4705
  const TypeAryPtr *tary;
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4706
  const Type* el = elem();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4707
  if (el->isa_narrowoop()) {
767
64fb1fd7186d 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents: 609
diff changeset
  4708
    el = el->make_ptr();
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4709
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4710
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4711
  // Get element klass
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4712
  if ((tinst = el->isa_instptr()) != NULL) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4713
    // Compute array klass from element klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4714
    k_ary = ciObjArrayKlass::make(tinst->klass());
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4715
  } else if ((tary = el->isa_aryptr()) != NULL) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4716
    // Compute array klass from element klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4717
    ciKlass* k_elem = tary->klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4718
    // If element type is something like bottom[], k_elem will be null.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4719
    if (k_elem != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4720
      k_ary = ciObjArrayKlass::make(k_elem);
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4721
  } else if ((el->base() == Type::Top) ||
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4722
             (el->base() == Type::Bottom)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4723
    // element type of Bottom occurs from meet of basic type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4724
    // and object; Top occurs when doing join on Bottom.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4725
    // Leave k_ary at NULL.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4726
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4727
    // Cannot compute array klass directly from basic type,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4728
    // since subtypes of TypeInt all have basic type T_INT.
6431
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4729
#ifdef ASSERT
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4730
    if (verify && el->isa_int()) {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4731
      // Check simple cases when verifying klass.
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4732
      BasicType bt = T_ILLEGAL;
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4733
      if (el == TypeInt::BYTE) {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4734
        bt = T_BYTE;
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4735
      } else if (el == TypeInt::SHORT) {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4736
        bt = T_SHORT;
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4737
      } else if (el == TypeInt::CHAR) {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4738
        bt = T_CHAR;
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4739
      } else if (el == TypeInt::INT) {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4740
        bt = T_INT;
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4741
      } else {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4742
        return _klass; // just return specified klass
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4743
      }
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4744
      return ciTypeArrayKlass::make(bt);
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4745
    }
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4746
#endif
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4747
    assert(!el->isa_int(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4748
           "integral arrays must be pre-equipped with a class");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4749
    // Compute array klass directly from basic type
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 237
diff changeset
  4750
    k_ary = ciTypeArrayKlass::make(el->basic_type());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4751
  }
6431
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4752
  return k_ary;
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4753
}
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4754
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4755
//------------------------------klass------------------------------------------
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4756
// Return the defining klass for this class
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4757
ciKlass* TypeAryPtr::klass() const {
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4758
  if( _klass ) return _klass;   // Return cached value, if possible
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4759
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4760
  // Oops, need to compute _klass and cache it
d76212f83824 6976400: "Meet Not Symmetric"
kvn
parents: 5900
diff changeset
  4761
  ciKlass* k_ary = compute_klass();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4762
8673
45ec0a6115a0 7026631: field _klass is incorrectly set for dual type of TypeAryPtr::OOPS
kvn
parents: 8670
diff changeset
  4763
  if( this != TypeAryPtr::OOPS && this->dual() != TypeAryPtr::OOPS ) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4764
    // The _klass field acts as a cache of the underlying
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4765
    // ciKlass for this array type.  In order to set the field,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4766
    // we need to cast away const-ness.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4767
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4768
    // IMPORTANT NOTE: we *never* set the _klass field for the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4769
    // type TypeAryPtr::OOPS.  This Type is shared between all
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4770
    // active compilations.  However, the ciKlass which represents
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4771
    // this Type is *not* shared between compilations, so caching
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4772
    // this value would result in fetching a dangling pointer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4773
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4774
    // Recomputing the underlying ciKlass for each request is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4775
    // a bit less efficient than caching, but calls to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4776
    // TypeAryPtr::OOPS->klass() are not common enough to matter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4777
    ((TypeAryPtr*)this)->_klass = k_ary;
589
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  4778
    if (UseCompressedOops && k_ary != NULL && k_ary->is_obj_array_klass() &&
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  4779
        _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes()) {
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  4780
      ((TypeAryPtr*)this)->_is_ptr_to_narrowoop = true;
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  4781
    }
a44a1e70a3e4 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 360
diff changeset
  4782
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4783
  return k_ary;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4784
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4785
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4786
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4787
//------------------------------add_offset-------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4788
// Access internals of klass object
1068
720698d9c89b 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 1055
diff changeset
  4789
const TypePtr *TypeKlassPtr::add_offset( intptr_t offset ) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4790
  return make( _ptr, klass(), xadd_offset(offset) );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4791
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4792
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4793
//------------------------------cast_to_ptr_type-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4794
const Type *TypeKlassPtr::cast_to_ptr_type(PTR ptr) const {
2021
3c26c11fa62e 6794939: assert(_base == OopPtr,"subclass must override cast_to_ptr_type")
kvn
parents: 2019
diff changeset
  4795
  assert(_base == KlassPtr, "subclass must override cast_to_ptr_type");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4796
  if( ptr == _ptr ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4797
  return make(ptr, _klass, _offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4798
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4799
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4800
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4801
//-----------------------------cast_to_exactness-------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4802
const Type *TypeKlassPtr::cast_to_exactness(bool klass_is_exact) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4803
  if( klass_is_exact == _klass_is_exact ) return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4804
  if (!UseExactTypes)  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4805
  return make(klass_is_exact ? Constant : NotNull, _klass, _offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4806
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4807
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4808
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4809
//-----------------------------as_instance_type--------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4810
// Corresponding type for an instance of the given class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4811
// It will be NotNull, and exact if and only if the klass type is exact.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4812
const TypeOopPtr* TypeKlassPtr::as_instance_type() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4813
  ciKlass* k = klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4814
  bool    xk = klass_is_exact();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4815
  //return TypeInstPtr::make(TypePtr::NotNull, k, xk, NULL, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4816
  const TypeOopPtr* toop = TypeOopPtr::make_from_klass_raw(k);
16361
00f328f6f285 8009166: [parfait] Null pointer deference in hotspot/src/share/vm/opto/type.cpp
morris
parents: 15228
diff changeset
  4817
  guarantee(toop != NULL, "need type for given klass");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4818
  toop = toop->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4819
  return toop->cast_to_exactness(xk)->is_oopptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4820
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4821
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4822
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4823
//------------------------------xmeet------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4824
// Compute the MEET of two types, return a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4825
const Type    *TypeKlassPtr::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4826
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4827
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4828
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4829
  // Current "this->_base" is Pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4830
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4831
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4832
  case Int:                     // Mixing ints & oops happens when javac
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4833
  case Long:                    // reuses local variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4834
  case FloatTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4835
  case FloatCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4836
  case FloatBot:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4837
  case DoubleTop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4838
  case DoubleCon:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4839
  case DoubleBot:
1055
f4fb9fb08038 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 955
diff changeset
  4840
  case NarrowOop:
13969
d2a189b83b87 7054512: Compress class pointers after perm gen removal
roland
parents: 13738
diff changeset
  4841
  case NarrowKlass:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4842
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4843
    return Type::BOTTOM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4844
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4845
    return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4846
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4847
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4848
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4849
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4850
  case AnyPtr: {                // Meeting to AnyPtrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4851
    // Found an AnyPtr type vs self-KlassPtr type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4852
    const TypePtr *tp = t->is_ptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4853
    int offset = meet_offset(tp->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4854
    PTR ptr = meet_ptr(tp->ptr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4855
    switch (tp->ptr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4856
    case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4857
      return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4858
    case Null:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4859
      if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset, tp->speculative(), tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4860
    case AnyNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4861
      return make( ptr, klass(), offset );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4862
    case BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4863
    case NotNull:
23525
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
roland
parents: 23491
diff changeset
  4864
      return TypePtr::make(AnyPtr, ptr, offset, tp->speculative(), tp->inline_depth());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4865
    default: typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4866
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4867
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4868
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4869
  case RawPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4870
  case MetadataPtr:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4871
  case OopPtr:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4872
  case AryPtr:                  // Meet with AryPtr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4873
  case InstPtr:                 // Meet with InstPtr
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4874
    return TypePtr::BOTTOM;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4875
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4876
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4877
  //             A-top         }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4878
  //           /   |   \       }  Tops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4879
  //       B-top A-any C-top   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4880
  //          | /  |  \ |      }  Any-nulls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4881
  //       B-any   |   C-any   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4882
  //          |    |    |
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4883
  //       B-con A-con C-con   } constants; not comparable across classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4884
  //          |    |    |
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4885
  //       B-not   |   C-not   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4886
  //          | \  |  / |      }  not-nulls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4887
  //       B-bot A-not C-bot   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4888
  //           \   |   /       }  Bottoms
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4889
  //             A-bot         }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4890
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4891
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4892
  case KlassPtr: {  // Meet two KlassPtr types
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4893
    const TypeKlassPtr *tkls = t->is_klassptr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4894
    int  off     = meet_offset(tkls->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4895
    PTR  ptr     = meet_ptr(tkls->ptr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4896
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4897
    // Check for easy case; klasses are equal (and perhaps not loaded!)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4898
    // If we have constants, then we created oops so classes are loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4899
    // and we can handle the constants further down.  This case handles
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4900
    // not-loaded classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4901
    if( ptr != Constant && tkls->klass()->equals(klass()) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4902
      return make( ptr, klass(), off );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4903
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4904
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4905
    // Classes require inspection in the Java klass hierarchy.  Must be loaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4906
    ciKlass* tkls_klass = tkls->klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4907
    ciKlass* this_klass = this->klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4908
    assert( tkls_klass->is_loaded(), "This class should have been loaded.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4909
    assert( this_klass->is_loaded(), "This class should have been loaded.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4910
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4911
    // If 'this' type is above the centerline and is a superclass of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4912
    // other, we can treat 'this' as having the same type as the other.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4913
    if ((above_centerline(this->ptr())) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4914
        tkls_klass->is_subtype_of(this_klass)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4915
      this_klass = tkls_klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4916
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4917
    // If 'tinst' type is above the centerline and is a superclass of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4918
    // other, we can treat 'tinst' as having the same type as the other.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4919
    if ((above_centerline(tkls->ptr())) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4920
        this_klass->is_subtype_of(tkls_klass)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4921
      tkls_klass = this_klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4922
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4923
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4924
    // Check for classes now being equal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4925
    if (tkls_klass->equals(this_klass)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4926
      // If the klasses are equal, the constants may still differ.  Fall to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4927
      // NotNull if they do (neither constant is NULL; that is a special case
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4928
      // handled elsewhere).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4929
      if( ptr == Constant ) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4930
        if (this->_ptr == Constant && tkls->_ptr == Constant &&
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4931
            this->klass()->equals(tkls->klass()));
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4932
        else if (above_centerline(this->ptr()));
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4933
        else if (above_centerline(tkls->ptr()));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4934
        else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4935
          ptr = NotNull;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4936
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4937
      return make( ptr, this_klass, off );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4938
    } // Else classes are not equal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4939
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4940
    // Since klasses are different, we require the LCA in the Java
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4941
    // class hierarchy - which means we have to fall to at least NotNull.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4942
    if( ptr == TopPTR || ptr == AnyNull || ptr == Constant )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4943
      ptr = NotNull;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4944
    // Now we find the LCA of Java classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4945
    ciKlass* k = this_klass->least_common_ancestor(tkls_klass);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4946
    return   make( ptr, k, off );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4947
  } // End of case KlassPtr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4948
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4949
  } // End of switch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4950
  return this;                  // Return the double constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4951
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4952
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4953
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4954
// Dual: compute field-by-field dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4955
const Type    *TypeKlassPtr::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4956
  return new TypeKlassPtr( dual_ptr(), klass(), dual_offset() );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4957
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4958
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4959
//------------------------------get_con----------------------------------------
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4960
intptr_t TypeKlassPtr::get_con() const {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4961
  assert( _ptr == Null || _ptr == Constant, "" );
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4962
  assert( _offset >= 0, "" );
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4963
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4964
  if (_offset != 0) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4965
    // After being ported to the compiler interface, the compiler no longer
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4966
    // directly manipulates the addresses of oops.  Rather, it only has a pointer
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4967
    // to a handle at compile time.  This handle is embedded in the generated
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4968
    // code and dereferenced at the time the nmethod is made.  Until that time,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4969
    // it is not reasonable to do arithmetic with the addresses of oops (we don't
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4970
    // have access to the addresses!).  This does not seem to currently happen,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4971
    // but this assertion here is to help prevent its occurence.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4972
    tty->print_cr("Found oop constant with non-zero offset");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4973
    ShouldNotReachHere();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4974
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4975
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4976
  return (intptr_t)klass()->constant_encoding();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13196
diff changeset
  4977
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4978
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4979
// Dump Klass Type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4980
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4981
void TypeKlassPtr::dump2( Dict & d, uint depth, outputStream *st ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4982
  switch( _ptr ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4983
  case Constant:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4984
    st->print("precise ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4985
  case NotNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4986
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4987
      const char *name = klass()->name()->as_utf8();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4988
      if( name ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4989
        st->print("klass %s: " INTPTR_FORMAT, name, klass());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4990
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4991
        ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4992
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4993
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4994
  case BotPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4995
    if( !WizardMode && !Verbose && !_klass_is_exact ) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4996
  case TopPTR:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4997
  case AnyNull:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4998
    st->print(":%s", ptr_msg[_ptr]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  4999
    if( _klass_is_exact ) st->print(":exact");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5000
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5001
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5002
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5003
  if( _offset ) {               // Dump offset, if any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5004
    if( _offset == OffsetBot )      { st->print("+any"); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5005
    else if( _offset == OffsetTop ) { st->print("+unknown"); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5006
    else                            { st->print("+%d", _offset); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5007
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5008
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5009
  st->print(" *");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5010
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5011
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5014
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5015
//=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5016
// Convenience common pre-built types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5017
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5018
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5019
const TypeFunc *TypeFunc::make( const TypeTuple *domain, const TypeTuple *range ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5020
  return (TypeFunc*)(new TypeFunc(domain,range))->hashcons();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5021
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5022
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5023
//------------------------------make-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5024
const TypeFunc *TypeFunc::make(ciMethod* method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5025
  Compile* C = Compile::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5026
  const TypeFunc* tf = C->last_tf(method); // check cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5027
  if (tf != NULL)  return tf;  // The hit rate here is almost 50%.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5028
  const TypeTuple *domain;
4566
b363f6ef4068 6829187: compiler optimizations required for JSR 292
twisti
parents: 4012
diff changeset
  5029
  if (method->is_static()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5030
    domain = TypeTuple::make_domain(NULL, method->signature());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5031
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5032
    domain = TypeTuple::make_domain(method->holder(), method->signature());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5033
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5034
  const TypeTuple *range  = TypeTuple::make_range(method->signature());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5035
  tf = TypeFunc::make(domain, range);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5036
  C->set_last_tf(method, tf);  // fill cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5037
  return tf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5038
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5039
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5040
//------------------------------meet-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5041
// Compute the MEET of two types.  It returns a new Type object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5042
const Type *TypeFunc::xmeet( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5043
  // Perform a fast test for common case; meeting the same types together.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5044
  if( this == t ) return this;  // Meeting same type-rep?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5045
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5046
  // Current "this->_base" is Func
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5047
  switch (t->base()) {          // switch on original type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5048
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5049
  case Bottom:                  // Ye Olde Default
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5050
    return t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5051
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5052
  default:                      // All else is a mistake
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5053
    typerr(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5054
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5055
  case Top:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5056
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5057
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5058
  return this;                  // Return the double constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5059
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5060
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5061
//------------------------------xdual------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5062
// Dual: compute field-by-field dual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5063
const Type *TypeFunc::xdual() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5064
  return this;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5065
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5066
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5067
//------------------------------eq---------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5068
// Structural equality check for Type representations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5069
bool TypeFunc::eq( const Type *t ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5070
  const TypeFunc *a = (const TypeFunc*)t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5071
  return _domain == a->_domain &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5072
    _range == a->_range;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5073
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5075
//------------------------------hash-------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5076
// Type-specific hashing function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5077
int TypeFunc::hash(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5078
  return (intptr_t)_domain + (intptr_t)_range;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5079
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5080
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5081
//------------------------------dump2------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5082
// Dump Function Type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5083
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5084
void TypeFunc::dump2( Dict &d, uint depth, outputStream *st ) const {
25911
d47a5d9c5b89 8050860: Cleanup TypeTuple and TypeFunc
anoll
parents: 24424
diff changeset
  5085
  if( _range->cnt() <= Parms )
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5086
    st->print("void");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5087
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5088
    uint i;
25911
d47a5d9c5b89 8050860: Cleanup TypeTuple and TypeFunc
anoll
parents: 24424
diff changeset
  5089
    for (i = Parms; i < _range->cnt()-1; i++) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5090
      _range->field_at(i)->dump2(d,depth,st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5091
      st->print("/");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5092
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5093
    _range->field_at(i)->dump2(d,depth,st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5094
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5095
  st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5096
  st->print("( ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5097
  if( !depth || d[this] ) {     // Check for recursive dump
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5098
    st->print("...)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5099
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5100
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5101
  d.Insert((void*)this,(void*)this);    // Stop recursion
25911
d47a5d9c5b89 8050860: Cleanup TypeTuple and TypeFunc
anoll
parents: 24424
diff changeset
  5102
  if (Parms < _domain->cnt())
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5103
    _domain->field_at(Parms)->dump2(d,depth-1,st);
25911
d47a5d9c5b89 8050860: Cleanup TypeTuple and TypeFunc
anoll
parents: 24424
diff changeset
  5104
  for (uint i = Parms+1; i < _domain->cnt(); i++) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5105
    st->print(", ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5106
    _domain->field_at(i)->dump2(d,depth-1,st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5107
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5108
  st->print(" )");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5109
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5110
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5111
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5112
//------------------------------singleton--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5113
// TRUE if Type is a singleton type, FALSE otherwise.   Singletons are simple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5114
// constants (Ldi nodes).  Singletons are integer, float or double constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5115
// or a single symbol.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5116
bool TypeFunc::singleton(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5117
  return false;                 // Never a singleton
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5118
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5119
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5120
bool TypeFunc::empty(void) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5121
  return false;                 // Never empty
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5122
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5123
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5124
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5125
BasicType TypeFunc::return_type() const{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5126
  if (range()->cnt() == TypeFunc::Parms) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5127
    return T_VOID;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5128
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5129
  return range()->field_at(TypeFunc::Parms)->basic_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  5130
}