diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/hotspot/share/classfile/vmSymbols.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/classfile/vmSymbols.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1041 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "compiler/compilerDirectives.hpp"
+#include "memory/oopFactory.hpp"
+#include "memory/metaspaceClosure.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvm.h"
+#include "runtime/handles.inline.hpp"
+#include "utilities/xmlstream.hpp"
+
+
+Symbol* vmSymbols::_symbols[vmSymbols::SID_LIMIT];
+
+Symbol* vmSymbols::_type_signatures[T_VOID+1] = { NULL /*, NULL...*/ };
+
+inline int compare_symbol(const Symbol* a, const Symbol* b) {
+  if (a == b)  return 0;
+  // follow the natural address order:
+  return (address)a > (address)b ? +1 : -1;
+}
+
+static vmSymbols::SID vm_symbol_index[vmSymbols::SID_LIMIT];
+extern "C" {
+  static int compare_vmsymbol_sid(const void* void_a, const void* void_b) {
+    const Symbol* a = vmSymbols::symbol_at(*((vmSymbols::SID*) void_a));
+    const Symbol* b = vmSymbols::symbol_at(*((vmSymbols::SID*) void_b));
+    return compare_symbol(a, b);
+  }
+}
+
+#ifdef ASSERT
+#define VM_SYMBOL_ENUM_NAME_BODY(name, string) #name "\0"
+static const char* vm_symbol_enum_names =
+  VM_SYMBOLS_DO(VM_SYMBOL_ENUM_NAME_BODY, VM_ALIAS_IGNORE)
+  "\0";
+static const char* vm_symbol_enum_name(vmSymbols::SID sid) {
+  const char* string = &vm_symbol_enum_names[0];
+  int skip = (int)sid - (int)vmSymbols::FIRST_SID;
+  for (; skip != 0; skip--) {
+    size_t skiplen = strlen(string);
+    if (skiplen == 0)  return "<unknown>";  // overflow
+    string += skiplen+1;
+  }
+  return string;
+}
+#endif //ASSERT
+
+// Put all the VM symbol strings in one place.
+// Makes for a more compact libjvm.
+#define VM_SYMBOL_BODY(name, string) string "\0"
+static const char* vm_symbol_bodies = VM_SYMBOLS_DO(VM_SYMBOL_BODY, VM_ALIAS_IGNORE);
+
+void vmSymbols::initialize(TRAPS) {
+  assert((int)SID_LIMIT <= (1<<log2_SID_LIMIT), "must fit in this bitfield");
+  assert((int)SID_LIMIT*5 > (1<<log2_SID_LIMIT), "make the bitfield smaller, please");
+  assert(vmIntrinsics::FLAG_LIMIT <= (1 << vmIntrinsics::log2_FLAG_LIMIT), "must fit in this bitfield");
+
+  if (!UseSharedSpaces) {
+    const char* string = &vm_symbol_bodies[0];
+    for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+      Symbol* sym = SymbolTable::new_permanent_symbol(string, CHECK);
+      _symbols[index] = sym;
+      string += strlen(string); // skip string body
+      string += 1;              // skip trailing null
+    }
+
+    _type_signatures[T_BYTE]    = byte_signature();
+    _type_signatures[T_CHAR]    = char_signature();
+    _type_signatures[T_DOUBLE]  = double_signature();
+    _type_signatures[T_FLOAT]   = float_signature();
+    _type_signatures[T_INT]     = int_signature();
+    _type_signatures[T_LONG]    = long_signature();
+    _type_signatures[T_SHORT]   = short_signature();
+    _type_signatures[T_BOOLEAN] = bool_signature();
+    _type_signatures[T_VOID]    = void_signature();
+    // no single signatures for T_OBJECT or T_ARRAY
+  }
+
+#ifdef ASSERT
+  // Check for duplicates:
+  for (int i1 = (int)FIRST_SID; i1 < (int)SID_LIMIT; i1++) {
+    Symbol* sym = symbol_at((SID)i1);
+    for (int i2 = (int)FIRST_SID; i2 < i1; i2++) {
+      if (symbol_at((SID)i2) == sym) {
+        tty->print("*** Duplicate VM symbol SIDs %s(%d) and %s(%d): \"",
+                   vm_symbol_enum_name((SID)i2), i2,
+                   vm_symbol_enum_name((SID)i1), i1);
+        sym->print_symbol_on(tty);
+        tty->print_cr("\"");
+      }
+    }
+  }
+#endif //ASSERT
+
+  // Create an index for find_id:
+  {
+    for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+      vm_symbol_index[index] = (SID)index;
+    }
+    int num_sids = SID_LIMIT-FIRST_SID;
+    qsort(&vm_symbol_index[FIRST_SID], num_sids, sizeof(vm_symbol_index[0]),
+          compare_vmsymbol_sid);
+  }
+
+#ifdef ASSERT
+  {
+    // Spot-check correspondence between strings, symbols, and enums:
+    assert(_symbols[NO_SID] == NULL, "must be");
+    const char* str = "java/lang/Object";
+    TempNewSymbol jlo = SymbolTable::new_permanent_symbol(str, CHECK);
+    assert(strncmp(str, (char*)jlo->base(), jlo->utf8_length()) == 0, "");
+    assert(jlo == java_lang_Object(), "");
+    SID sid = VM_SYMBOL_ENUM_NAME(java_lang_Object);
+    assert(find_sid(jlo) == sid, "");
+    assert(symbol_at(sid) == jlo, "");
+
+    // Make sure find_sid produces the right answer in each case.
+    for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+      Symbol* sym = symbol_at((SID)index);
+      sid = find_sid(sym);
+      assert(sid == (SID)index, "symbol index works");
+      // Note:  If there are duplicates, this assert will fail.
+      // A "Duplicate VM symbol" message will have already been printed.
+    }
+
+    // The string "format" happens (at the moment) not to be a vmSymbol,
+    // though it is a method name in java.lang.String.
+    str = "format";
+    TempNewSymbol fmt = SymbolTable::new_permanent_symbol(str, CHECK);
+    sid = find_sid(fmt);
+    assert(sid == NO_SID, "symbol index works (negative test)");
+  }
+#endif
+}
+
+
+#ifndef PRODUCT
+const char* vmSymbols::name_for(vmSymbols::SID sid) {
+  if (sid == NO_SID)
+    return "NO_SID";
+  const char* string = &vm_symbol_bodies[0];
+  for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+    if (index == (int)sid)
+      return string;
+    string += strlen(string); // skip string body
+    string += 1;              // skip trailing null
+  }
+  return "BAD_SID";
+}
+#endif
+
+
+
+void vmSymbols::symbols_do(SymbolClosure* f) {
+  for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+    f->do_symbol(&_symbols[index]);
+  }
+  for (int i = 0; i < T_VOID+1; i++) {
+    f->do_symbol(&_type_signatures[i]);
+  }
+}
+
+void vmSymbols::metaspace_pointers_do(MetaspaceClosure *it) {
+  for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+    it->push(&_symbols[index]);
+  }
+  for (int i = 0; i < T_VOID+1; i++) {
+    it->push(&_type_signatures[i]);
+  }
+}
+
+void vmSymbols::serialize(SerializeClosure* soc) {
+  soc->do_region((u_char*)&_symbols[FIRST_SID],
+                 (SID_LIMIT - FIRST_SID) * sizeof(_symbols[0]));
+  soc->do_region((u_char*)_type_signatures, sizeof(_type_signatures));
+}
+
+
+BasicType vmSymbols::signature_type(const Symbol* s) {
+  assert(s != NULL, "checking");
+  for (int i = T_BOOLEAN; i < T_VOID+1; i++) {
+    if (s == _type_signatures[i]) {
+      return (BasicType)i;
+    }
+  }
+  return T_OBJECT;
+}
+
+
+static int mid_hint = (int)vmSymbols::FIRST_SID+1;
+
+#ifndef PRODUCT
+static int find_sid_calls, find_sid_probes;
+// (Typical counts are calls=7000 and probes=17000.)
+#endif
+
+vmSymbols::SID vmSymbols::find_sid(const Symbol* symbol) {
+  // Handle the majority of misses by a bounds check.
+  // Then, use a binary search over the index.
+  // Expected trip count is less than log2_SID_LIMIT, about eight.
+  // This is slow but acceptable, given that calls are not
+  // dynamically common.  (Method*::intrinsic_id has a cache.)
+  NOT_PRODUCT(find_sid_calls++);
+  int min = (int)FIRST_SID, max = (int)SID_LIMIT - 1;
+  SID sid = NO_SID, sid1;
+  int cmp1;
+  sid1 = vm_symbol_index[min];
+  cmp1 = compare_symbol(symbol, symbol_at(sid1));
+  if (cmp1 <= 0) {              // before the first
+    if (cmp1 == 0)  sid = sid1;
+  } else {
+    sid1 = vm_symbol_index[max];
+    cmp1 = compare_symbol(symbol, symbol_at(sid1));
+    if (cmp1 >= 0) {            // after the last
+      if (cmp1 == 0)  sid = sid1;
+    } else {
+      // After checking the extremes, do a binary search.
+      ++min; --max;             // endpoints are done
+      int mid = mid_hint;       // start at previous success
+      while (max >= min) {
+        assert(mid >= min && mid <= max, "");
+        NOT_PRODUCT(find_sid_probes++);
+        sid1 = vm_symbol_index[mid];
+        cmp1 = compare_symbol(symbol, symbol_at(sid1));
+        if (cmp1 == 0) {
+          mid_hint = mid;
+          sid = sid1;
+          break;
+        }
+        if (cmp1 < 0)
+          max = mid - 1;        // symbol < symbol_at(sid)
+        else
+          min = mid + 1;
+
+        // Pick a new probe point:
+        mid = (max + min) / 2;
+      }
+    }
+  }
+
+#ifdef ASSERT
+  // Perform the exhaustive self-check the first 1000 calls,
+  // and every 100 calls thereafter.
+  static int find_sid_check_count = -2000;
+  if ((uint)++find_sid_check_count > (uint)100) {
+    if (find_sid_check_count > 0)  find_sid_check_count = 0;
+
+    // Make sure this is the right answer, using linear search.
+    // (We have already proven that there are no duplicates in the list.)
+    SID sid2 = NO_SID;
+    for (int index = (int)FIRST_SID; index < (int)SID_LIMIT; index++) {
+      Symbol* sym2 = symbol_at((SID)index);
+      if (sym2 == symbol) {
+        sid2 = (SID)index;
+        break;
+      }
+    }
+    // Unless it's a duplicate, assert that the sids are the same.
+    if (_symbols[sid] != _symbols[sid2]) {
+      assert(sid == sid2, "binary same as linear search");
+    }
+  }
+#endif //ASSERT
+
+  return sid;
+}
+
+vmSymbols::SID vmSymbols::find_sid(const char* symbol_name) {
+  Symbol* symbol = SymbolTable::probe(symbol_name, (int) strlen(symbol_name));
+  if (symbol == NULL)  return NO_SID;
+  return find_sid(symbol);
+}
+
+static vmIntrinsics::ID wrapper_intrinsic(BasicType type, bool unboxing) {
+#define TYPE2(type, unboxing) ((int)(type)*2 + ((unboxing) ? 1 : 0))
+  switch (TYPE2(type, unboxing)) {
+#define BASIC_TYPE_CASE(type, box, unbox) \
+    case TYPE2(type, false):  return vmIntrinsics::box; \
+    case TYPE2(type, true):   return vmIntrinsics::unbox
+    BASIC_TYPE_CASE(T_BOOLEAN, _Boolean_valueOf,   _booleanValue);
+    BASIC_TYPE_CASE(T_BYTE,    _Byte_valueOf,      _byteValue);
+    BASIC_TYPE_CASE(T_CHAR,    _Character_valueOf, _charValue);
+    BASIC_TYPE_CASE(T_SHORT,   _Short_valueOf,     _shortValue);
+    BASIC_TYPE_CASE(T_INT,     _Integer_valueOf,   _intValue);
+    BASIC_TYPE_CASE(T_LONG,    _Long_valueOf,      _longValue);
+    BASIC_TYPE_CASE(T_FLOAT,   _Float_valueOf,     _floatValue);
+    BASIC_TYPE_CASE(T_DOUBLE,  _Double_valueOf,    _doubleValue);
+#undef BASIC_TYPE_CASE
+  }
+#undef TYPE2
+  return vmIntrinsics::_none;
+}
+
+vmIntrinsics::ID vmIntrinsics::for_boxing(BasicType type) {
+  return wrapper_intrinsic(type, false);
+}
+vmIntrinsics::ID vmIntrinsics::for_unboxing(BasicType type) {
+  return wrapper_intrinsic(type, true);
+}
+
+vmIntrinsics::ID vmIntrinsics::for_raw_conversion(BasicType src, BasicType dest) {
+#define SRC_DEST(s,d) (((int)(s) << 4) + (int)(d))
+  switch (SRC_DEST(src, dest)) {
+  case SRC_DEST(T_INT, T_FLOAT):   return vmIntrinsics::_intBitsToFloat;
+  case SRC_DEST(T_FLOAT, T_INT):   return vmIntrinsics::_floatToRawIntBits;
+
+  case SRC_DEST(T_LONG, T_DOUBLE): return vmIntrinsics::_longBitsToDouble;
+  case SRC_DEST(T_DOUBLE, T_LONG): return vmIntrinsics::_doubleToRawLongBits;
+  }
+#undef SRC_DEST
+
+  return vmIntrinsics::_none;
+}
+
+bool vmIntrinsics::preserves_state(vmIntrinsics::ID id) {
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+  switch(id) {
+#ifdef TRACE_HAVE_INTRINSICS
+  case vmIntrinsics::_counterTime:
+#endif
+  case vmIntrinsics::_currentTimeMillis:
+  case vmIntrinsics::_nanoTime:
+  case vmIntrinsics::_floatToRawIntBits:
+  case vmIntrinsics::_intBitsToFloat:
+  case vmIntrinsics::_doubleToRawLongBits:
+  case vmIntrinsics::_longBitsToDouble:
+  case vmIntrinsics::_getClass:
+  case vmIntrinsics::_isInstance:
+  case vmIntrinsics::_currentThread:
+  case vmIntrinsics::_dabs:
+  case vmIntrinsics::_dsqrt:
+  case vmIntrinsics::_dsin:
+  case vmIntrinsics::_dcos:
+  case vmIntrinsics::_dtan:
+  case vmIntrinsics::_dlog:
+  case vmIntrinsics::_dlog10:
+  case vmIntrinsics::_dexp:
+  case vmIntrinsics::_dpow:
+  case vmIntrinsics::_checkIndex:
+  case vmIntrinsics::_Reference_get:
+  case vmIntrinsics::_updateCRC32:
+  case vmIntrinsics::_updateBytesCRC32:
+  case vmIntrinsics::_updateByteBufferCRC32:
+  case vmIntrinsics::_vectorizedMismatch:
+  case vmIntrinsics::_fmaD:
+  case vmIntrinsics::_fmaF:
+    return true;
+  default:
+    return false;
+  }
+}
+
+bool vmIntrinsics::can_trap(vmIntrinsics::ID id) {
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+  switch(id) {
+#ifdef TRACE_HAVE_INTRINSICS
+  case vmIntrinsics::_counterTime:
+  case vmIntrinsics::_getClassId:
+#endif
+  case vmIntrinsics::_currentTimeMillis:
+  case vmIntrinsics::_nanoTime:
+  case vmIntrinsics::_floatToRawIntBits:
+  case vmIntrinsics::_intBitsToFloat:
+  case vmIntrinsics::_doubleToRawLongBits:
+  case vmIntrinsics::_longBitsToDouble:
+  case vmIntrinsics::_currentThread:
+  case vmIntrinsics::_dabs:
+  case vmIntrinsics::_dsqrt:
+  case vmIntrinsics::_dsin:
+  case vmIntrinsics::_dcos:
+  case vmIntrinsics::_dtan:
+  case vmIntrinsics::_dlog:
+  case vmIntrinsics::_dlog10:
+  case vmIntrinsics::_dexp:
+  case vmIntrinsics::_dpow:
+  case vmIntrinsics::_updateCRC32:
+  case vmIntrinsics::_updateBytesCRC32:
+  case vmIntrinsics::_updateByteBufferCRC32:
+  case vmIntrinsics::_vectorizedMismatch:
+  case vmIntrinsics::_fmaD:
+  case vmIntrinsics::_fmaF:
+    return false;
+  default:
+    return true;
+  }
+}
+
+// Some intrinsics produce different results if they are not pinned
+bool vmIntrinsics::should_be_pinned(vmIntrinsics::ID id) {
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+  switch(id) {
+#ifdef TRACE_HAVE_INTRINSICS
+  case vmIntrinsics::_counterTime:
+#endif
+  case vmIntrinsics::_currentTimeMillis:
+  case vmIntrinsics::_nanoTime:
+    return true;
+  default:
+    return false;
+  }
+}
+
+bool vmIntrinsics::does_virtual_dispatch(vmIntrinsics::ID id) {
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+  switch(id) {
+  case vmIntrinsics::_hashCode:
+  case vmIntrinsics::_clone:
+    return true;
+    break;
+  default:
+    return false;
+  }
+}
+
+int vmIntrinsics::predicates_needed(vmIntrinsics::ID id) {
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+  switch (id) {
+  case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
+  case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
+  case vmIntrinsics::_counterMode_AESCrypt:
+    return 1;
+  case vmIntrinsics::_digestBase_implCompressMB:
+    return 3;
+  default:
+    return 0;
+  }
+}
+
+bool vmIntrinsics::is_intrinsic_available(vmIntrinsics::ID id) {
+  return !vmIntrinsics::is_intrinsic_disabled(id) &&
+    !vmIntrinsics::is_disabled_by_flags(id);
+}
+
+bool vmIntrinsics::is_intrinsic_disabled(vmIntrinsics::ID id) {
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+
+  // Canonicalize DisableIntrinsic to contain only ',' as a separator.
+  // Note, DirectiveSet may not be created at this point yet since this code
+  // is called from initial stub geenration code.
+  char* local_list = (char*)DirectiveSet::canonicalize_disableintrinsic(DisableIntrinsic);
+
+  bool found = false;
+  char* token = strtok(local_list, ",");
+  while (token != NULL) {
+    if (strcmp(token, vmIntrinsics::name_at(id)) == 0) {
+      found = true;
+      break;
+    } else {
+      token = strtok(NULL, ",");
+    }
+  }
+
+  FREE_C_HEAP_ARRAY(char, local_list);
+  return found;
+}
+
+
+bool vmIntrinsics::is_disabled_by_flags(const methodHandle& method) {
+  vmIntrinsics::ID id = method->intrinsic_id();
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+  return is_disabled_by_flags(id);
+}
+
+bool vmIntrinsics::is_disabled_by_flags(vmIntrinsics::ID id) {
+  assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
+
+  // -XX:-InlineNatives disables nearly all intrinsics except the ones listed in
+  // the following switch statement.
+  if (!InlineNatives) {
+    switch (id) {
+    case vmIntrinsics::_indexOfL:
+    case vmIntrinsics::_indexOfU:
+    case vmIntrinsics::_indexOfUL:
+    case vmIntrinsics::_indexOfIL:
+    case vmIntrinsics::_indexOfIU:
+    case vmIntrinsics::_indexOfIUL:
+    case vmIntrinsics::_indexOfU_char:
+    case vmIntrinsics::_compareToL:
+    case vmIntrinsics::_compareToU:
+    case vmIntrinsics::_compareToLU:
+    case vmIntrinsics::_compareToUL:
+    case vmIntrinsics::_equalsL:
+    case vmIntrinsics::_equalsU:
+    case vmIntrinsics::_equalsC:
+    case vmIntrinsics::_getCharStringU:
+    case vmIntrinsics::_putCharStringU:
+    case vmIntrinsics::_compressStringC:
+    case vmIntrinsics::_compressStringB:
+    case vmIntrinsics::_inflateStringC:
+    case vmIntrinsics::_inflateStringB:
+    case vmIntrinsics::_getAndAddInt:
+    case vmIntrinsics::_getAndAddLong:
+    case vmIntrinsics::_getAndSetInt:
+    case vmIntrinsics::_getAndSetLong:
+    case vmIntrinsics::_getAndSetObject:
+    case vmIntrinsics::_loadFence:
+    case vmIntrinsics::_storeFence:
+    case vmIntrinsics::_fullFence:
+    case vmIntrinsics::_hasNegatives:
+    case vmIntrinsics::_Reference_get:
+      break;
+    default:
+      return true;
+    }
+  }
+
+  switch (id) {
+  case vmIntrinsics::_isInstance:
+  case vmIntrinsics::_isAssignableFrom:
+  case vmIntrinsics::_getModifiers:
+  case vmIntrinsics::_isInterface:
+  case vmIntrinsics::_isArray:
+  case vmIntrinsics::_isPrimitive:
+  case vmIntrinsics::_getSuperclass:
+  case vmIntrinsics::_Class_cast:
+  case vmIntrinsics::_getLength:
+  case vmIntrinsics::_newArray:
+  case vmIntrinsics::_getClass:
+    if (!InlineClassNatives) return true;
+    break;
+  case vmIntrinsics::_currentThread:
+  case vmIntrinsics::_isInterrupted:
+    if (!InlineThreadNatives) return true;
+    break;
+  case vmIntrinsics::_floatToRawIntBits:
+  case vmIntrinsics::_intBitsToFloat:
+  case vmIntrinsics::_doubleToRawLongBits:
+  case vmIntrinsics::_longBitsToDouble:
+  case vmIntrinsics::_dabs:
+  case vmIntrinsics::_dsqrt:
+  case vmIntrinsics::_dsin:
+  case vmIntrinsics::_dcos:
+  case vmIntrinsics::_dtan:
+  case vmIntrinsics::_dlog:
+  case vmIntrinsics::_dexp:
+  case vmIntrinsics::_dpow:
+  case vmIntrinsics::_dlog10:
+  case vmIntrinsics::_datan2:
+  case vmIntrinsics::_min:
+  case vmIntrinsics::_max:
+  case vmIntrinsics::_floatToIntBits:
+  case vmIntrinsics::_doubleToLongBits:
+    if (!InlineMathNatives) return true;
+    break;
+  case vmIntrinsics::_fmaD:
+  case vmIntrinsics::_fmaF:
+    if (!InlineMathNatives || !UseFMA) return true;
+    break;
+  case vmIntrinsics::_arraycopy:
+    if (!InlineArrayCopy) return true;
+    break;
+  case vmIntrinsics::_updateCRC32:
+  case vmIntrinsics::_updateBytesCRC32:
+  case vmIntrinsics::_updateByteBufferCRC32:
+    if (!UseCRC32Intrinsics) return true;
+    break;
+  case vmIntrinsics::_getObject:
+  case vmIntrinsics::_getBoolean:
+  case vmIntrinsics::_getByte:
+  case vmIntrinsics::_getShort:
+  case vmIntrinsics::_getChar:
+  case vmIntrinsics::_getInt:
+  case vmIntrinsics::_getLong:
+  case vmIntrinsics::_getFloat:
+  case vmIntrinsics::_getDouble:
+  case vmIntrinsics::_putObject:
+  case vmIntrinsics::_putBoolean:
+  case vmIntrinsics::_putByte:
+  case vmIntrinsics::_putShort:
+  case vmIntrinsics::_putChar:
+  case vmIntrinsics::_putInt:
+  case vmIntrinsics::_putLong:
+  case vmIntrinsics::_putFloat:
+  case vmIntrinsics::_putDouble:
+  case vmIntrinsics::_getObjectVolatile:
+  case vmIntrinsics::_getBooleanVolatile:
+  case vmIntrinsics::_getByteVolatile:
+  case vmIntrinsics::_getShortVolatile:
+  case vmIntrinsics::_getCharVolatile:
+  case vmIntrinsics::_getIntVolatile:
+  case vmIntrinsics::_getLongVolatile:
+  case vmIntrinsics::_getFloatVolatile:
+  case vmIntrinsics::_getDoubleVolatile:
+  case vmIntrinsics::_putObjectVolatile:
+  case vmIntrinsics::_putBooleanVolatile:
+  case vmIntrinsics::_putByteVolatile:
+  case vmIntrinsics::_putShortVolatile:
+  case vmIntrinsics::_putCharVolatile:
+  case vmIntrinsics::_putIntVolatile:
+  case vmIntrinsics::_putLongVolatile:
+  case vmIntrinsics::_putFloatVolatile:
+  case vmIntrinsics::_putDoubleVolatile:
+  case vmIntrinsics::_getObjectAcquire:
+  case vmIntrinsics::_getBooleanAcquire:
+  case vmIntrinsics::_getByteAcquire:
+  case vmIntrinsics::_getShortAcquire:
+  case vmIntrinsics::_getCharAcquire:
+  case vmIntrinsics::_getIntAcquire:
+  case vmIntrinsics::_getLongAcquire:
+  case vmIntrinsics::_getFloatAcquire:
+  case vmIntrinsics::_getDoubleAcquire:
+  case vmIntrinsics::_putObjectRelease:
+  case vmIntrinsics::_putBooleanRelease:
+  case vmIntrinsics::_putByteRelease:
+  case vmIntrinsics::_putShortRelease:
+  case vmIntrinsics::_putCharRelease:
+  case vmIntrinsics::_putIntRelease:
+  case vmIntrinsics::_putLongRelease:
+  case vmIntrinsics::_putFloatRelease:
+  case vmIntrinsics::_putDoubleRelease:
+  case vmIntrinsics::_getObjectOpaque:
+  case vmIntrinsics::_getBooleanOpaque:
+  case vmIntrinsics::_getByteOpaque:
+  case vmIntrinsics::_getShortOpaque:
+  case vmIntrinsics::_getCharOpaque:
+  case vmIntrinsics::_getIntOpaque:
+  case vmIntrinsics::_getLongOpaque:
+  case vmIntrinsics::_getFloatOpaque:
+  case vmIntrinsics::_getDoubleOpaque:
+  case vmIntrinsics::_putObjectOpaque:
+  case vmIntrinsics::_putBooleanOpaque:
+  case vmIntrinsics::_putByteOpaque:
+  case vmIntrinsics::_putShortOpaque:
+  case vmIntrinsics::_putCharOpaque:
+  case vmIntrinsics::_putIntOpaque:
+  case vmIntrinsics::_putLongOpaque:
+  case vmIntrinsics::_putFloatOpaque:
+  case vmIntrinsics::_putDoubleOpaque:
+  case vmIntrinsics::_getAndAddInt:
+  case vmIntrinsics::_getAndAddLong:
+  case vmIntrinsics::_getAndSetInt:
+  case vmIntrinsics::_getAndSetLong:
+  case vmIntrinsics::_getAndSetObject:
+  case vmIntrinsics::_loadFence:
+  case vmIntrinsics::_storeFence:
+  case vmIntrinsics::_fullFence:
+  case vmIntrinsics::_compareAndSetLong:
+  case vmIntrinsics::_weakCompareAndSetLong:
+  case vmIntrinsics::_weakCompareAndSetLongPlain:
+  case vmIntrinsics::_weakCompareAndSetLongAcquire:
+  case vmIntrinsics::_weakCompareAndSetLongRelease:
+  case vmIntrinsics::_compareAndSetInt:
+  case vmIntrinsics::_weakCompareAndSetInt:
+  case vmIntrinsics::_weakCompareAndSetIntPlain:
+  case vmIntrinsics::_weakCompareAndSetIntAcquire:
+  case vmIntrinsics::_weakCompareAndSetIntRelease:
+  case vmIntrinsics::_compareAndSetObject:
+  case vmIntrinsics::_weakCompareAndSetObject:
+  case vmIntrinsics::_weakCompareAndSetObjectPlain:
+  case vmIntrinsics::_weakCompareAndSetObjectAcquire:
+  case vmIntrinsics::_weakCompareAndSetObjectRelease:
+  case vmIntrinsics::_compareAndExchangeInt:
+  case vmIntrinsics::_compareAndExchangeIntAcquire:
+  case vmIntrinsics::_compareAndExchangeIntRelease:
+  case vmIntrinsics::_compareAndExchangeLong:
+  case vmIntrinsics::_compareAndExchangeLongAcquire:
+  case vmIntrinsics::_compareAndExchangeLongRelease:
+  case vmIntrinsics::_compareAndExchangeObject:
+  case vmIntrinsics::_compareAndExchangeObjectAcquire:
+  case vmIntrinsics::_compareAndExchangeObjectRelease:
+    if (!InlineUnsafeOps) return true;
+    break;
+  case vmIntrinsics::_getShortUnaligned:
+  case vmIntrinsics::_getCharUnaligned:
+  case vmIntrinsics::_getIntUnaligned:
+  case vmIntrinsics::_getLongUnaligned:
+  case vmIntrinsics::_putShortUnaligned:
+  case vmIntrinsics::_putCharUnaligned:
+  case vmIntrinsics::_putIntUnaligned:
+  case vmIntrinsics::_putLongUnaligned:
+  case vmIntrinsics::_allocateInstance:
+    if (!InlineUnsafeOps || !UseUnalignedAccesses) return true;
+    break;
+  case vmIntrinsics::_hashCode:
+    if (!InlineObjectHash) return true;
+    break;
+  case vmIntrinsics::_aescrypt_encryptBlock:
+  case vmIntrinsics::_aescrypt_decryptBlock:
+    if (!UseAESIntrinsics) return true;
+    break;
+  case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
+  case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
+    if (!UseAESIntrinsics) return true;
+    break;
+  case vmIntrinsics::_counterMode_AESCrypt:
+    if (!UseAESCTRIntrinsics) return true;
+    break;
+  case vmIntrinsics::_sha_implCompress:
+    if (!UseSHA1Intrinsics) return true;
+    break;
+  case vmIntrinsics::_sha2_implCompress:
+    if (!UseSHA256Intrinsics) return true;
+    break;
+  case vmIntrinsics::_sha5_implCompress:
+    if (!UseSHA512Intrinsics) return true;
+    break;
+  case vmIntrinsics::_digestBase_implCompressMB:
+    if (!(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics)) return true;
+    break;
+  case vmIntrinsics::_ghash_processBlocks:
+    if (!UseGHASHIntrinsics) return true;
+    break;
+  case vmIntrinsics::_updateBytesCRC32C:
+  case vmIntrinsics::_updateDirectByteBufferCRC32C:
+    if (!UseCRC32CIntrinsics) return true;
+    break;
+  case vmIntrinsics::_vectorizedMismatch:
+    if (!UseVectorizedMismatchIntrinsic) return true;
+    break;
+  case vmIntrinsics::_updateBytesAdler32:
+  case vmIntrinsics::_updateByteBufferAdler32:
+    if (!UseAdler32Intrinsics) return true;
+    break;
+  case vmIntrinsics::_copyMemory:
+    if (!InlineArrayCopy || !InlineUnsafeOps) return true;
+    break;
+#ifdef COMPILER1
+  case vmIntrinsics::_checkIndex:
+    if (!InlineNIOCheckIndex) return true;
+    break;
+#endif // COMPILER1
+#ifdef COMPILER2
+  case vmIntrinsics::_clone:
+  case vmIntrinsics::_copyOf:
+  case vmIntrinsics::_copyOfRange:
+    // These intrinsics use both the objectcopy and the arraycopy
+    // intrinsic mechanism.
+    if (!InlineObjectCopy || !InlineArrayCopy) return true;
+    break;
+  case vmIntrinsics::_compareToL:
+  case vmIntrinsics::_compareToU:
+  case vmIntrinsics::_compareToLU:
+  case vmIntrinsics::_compareToUL:
+    if (!SpecialStringCompareTo) return true;
+    break;
+  case vmIntrinsics::_indexOfL:
+  case vmIntrinsics::_indexOfU:
+  case vmIntrinsics::_indexOfUL:
+  case vmIntrinsics::_indexOfIL:
+  case vmIntrinsics::_indexOfIU:
+  case vmIntrinsics::_indexOfIUL:
+  case vmIntrinsics::_indexOfU_char:
+    if (!SpecialStringIndexOf) return true;
+    break;
+  case vmIntrinsics::_equalsL:
+  case vmIntrinsics::_equalsU:
+    if (!SpecialStringEquals) return true;
+    break;
+  case vmIntrinsics::_equalsB:
+  case vmIntrinsics::_equalsC:
+    if (!SpecialArraysEquals) return true;
+    break;
+  case vmIntrinsics::_encodeISOArray:
+  case vmIntrinsics::_encodeByteISOArray:
+    if (!SpecialEncodeISOArray) return true;
+    break;
+  case vmIntrinsics::_getCallerClass:
+    if (!InlineReflectionGetCallerClass) return true;
+    break;
+  case vmIntrinsics::_multiplyToLen:
+    if (!UseMultiplyToLenIntrinsic) return true;
+    break;
+  case vmIntrinsics::_squareToLen:
+    if (!UseSquareToLenIntrinsic) return true;
+    break;
+  case vmIntrinsics::_mulAdd:
+    if (!UseMulAddIntrinsic) return true;
+    break;
+  case vmIntrinsics::_montgomeryMultiply:
+    if (!UseMontgomeryMultiplyIntrinsic) return true;
+    break;
+  case vmIntrinsics::_montgomerySquare:
+    if (!UseMontgomerySquareIntrinsic) return true;
+    break;
+  case vmIntrinsics::_addExactI:
+  case vmIntrinsics::_addExactL:
+  case vmIntrinsics::_decrementExactI:
+  case vmIntrinsics::_decrementExactL:
+  case vmIntrinsics::_incrementExactI:
+  case vmIntrinsics::_incrementExactL:
+  case vmIntrinsics::_multiplyExactI:
+  case vmIntrinsics::_multiplyExactL:
+  case vmIntrinsics::_negateExactI:
+  case vmIntrinsics::_negateExactL:
+  case vmIntrinsics::_subtractExactI:
+  case vmIntrinsics::_subtractExactL:
+    if (!UseMathExactIntrinsics || !InlineMathNatives) return true;
+    break;
+#endif // COMPILER2
+  default:
+    return false;
+  }
+
+  return false;
+}
+
+#define VM_INTRINSIC_INITIALIZE(id, klass, name, sig, flags) #id "\0"
+static const char* vm_intrinsic_name_bodies =
+  VM_INTRINSICS_DO(VM_INTRINSIC_INITIALIZE,
+                   VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE);
+
+static const char* vm_intrinsic_name_table[vmIntrinsics::ID_LIMIT];
+
+const char* vmIntrinsics::name_at(vmIntrinsics::ID id) {
+  const char** nt = &vm_intrinsic_name_table[0];
+  if (nt[_none] == NULL) {
+    char* string = (char*) &vm_intrinsic_name_bodies[0];
+    for (int index = FIRST_ID; index < ID_LIMIT; index++) {
+      nt[index] = string;
+      string += strlen(string); // skip string body
+      string += 1;              // skip trailing null
+    }
+    assert(!strcmp(nt[_hashCode], "_hashCode"), "lined up");
+    nt[_none] = "_none";
+  }
+  if ((uint)id < (uint)ID_LIMIT)
+    return vm_intrinsic_name_table[(uint)id];
+  else
+    return "(unknown intrinsic)";
+}
+
+// These are flag-matching functions:
+inline bool match_F_R(jshort flags) {
+  const int req = 0;
+  const int neg = JVM_ACC_STATIC | JVM_ACC_SYNCHRONIZED;
+  return (flags & (req | neg)) == req;
+}
+inline bool match_F_Y(jshort flags) {
+  const int req = JVM_ACC_SYNCHRONIZED;
+  const int neg = JVM_ACC_STATIC;
+  return (flags & (req | neg)) == req;
+}
+inline bool match_F_RN(jshort flags) {
+  const int req = JVM_ACC_NATIVE;
+  const int neg = JVM_ACC_STATIC | JVM_ACC_SYNCHRONIZED;
+  return (flags & (req | neg)) == req;
+}
+inline bool match_F_S(jshort flags) {
+  const int req = JVM_ACC_STATIC;
+  const int neg = JVM_ACC_SYNCHRONIZED;
+  return (flags & (req | neg)) == req;
+}
+inline bool match_F_SN(jshort flags) {
+  const int req = JVM_ACC_STATIC | JVM_ACC_NATIVE;
+  const int neg = JVM_ACC_SYNCHRONIZED;
+  return (flags & (req | neg)) == req;
+}
+inline bool match_F_RNY(jshort flags) {
+  const int req = JVM_ACC_NATIVE | JVM_ACC_SYNCHRONIZED;
+  const int neg = JVM_ACC_STATIC;
+  return (flags & (req | neg)) == req;
+}
+
+// These are for forming case labels:
+#define ID3(x, y, z) (( jlong)(z) +                                  \
+                      ((jlong)(y) <<    vmSymbols::log2_SID_LIMIT) + \
+                      ((jlong)(x) << (2*vmSymbols::log2_SID_LIMIT))  )
+#define SID_ENUM(n) vmSymbols::VM_SYMBOL_ENUM_NAME(n)
+
+vmIntrinsics::ID vmIntrinsics::find_id_impl(vmSymbols::SID holder,
+                                            vmSymbols::SID name,
+                                            vmSymbols::SID sig,
+                                            jshort flags) {
+  assert((int)vmSymbols::SID_LIMIT <= (1<<vmSymbols::log2_SID_LIMIT), "must fit");
+
+  // Let the C compiler build the decision tree.
+
+#define VM_INTRINSIC_CASE(id, klass, name, sig, fcode) \
+  case ID3(SID_ENUM(klass), SID_ENUM(name), SID_ENUM(sig)): \
+    if (!match_##fcode(flags))  break; \
+    return id;
+
+  switch (ID3(holder, name, sig)) {
+    VM_INTRINSICS_DO(VM_INTRINSIC_CASE,
+                     VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE);
+  }
+  return vmIntrinsics::_none;
+
+#undef VM_INTRINSIC_CASE
+}
+
+
+const char* vmIntrinsics::short_name_as_C_string(vmIntrinsics::ID id, char* buf, int buflen) {
+  const char* str = name_at(id);
+#ifndef PRODUCT
+  const char* kname = vmSymbols::name_for(class_for(id));
+  const char* mname = vmSymbols::name_for(name_for(id));
+  const char* sname = vmSymbols::name_for(signature_for(id));
+  const char* fname = "";
+  switch (flags_for(id)) {
+  case F_Y:  fname = "synchronized ";  break;
+  case F_RN: fname = "native ";        break;
+  case F_SN: fname = "native static "; break;
+  case F_S:  fname = "static ";        break;
+  case F_RNY:fname = "native synchronized "; break;
+  default:   break;
+  }
+  const char* kptr = strrchr(kname, '/');
+  if (kptr != NULL)  kname = kptr + 1;
+  int len = jio_snprintf(buf, buflen, "%s: %s%s.%s%s",
+                         str, fname, kname, mname, sname);
+  if (len < buflen)
+    str = buf;
+#endif //PRODUCT
+  return str;
+}
+
+
+// These are to get information about intrinsics.
+
+#define ID4(x, y, z, f) ((ID3(x, y, z) << vmIntrinsics::log2_FLAG_LIMIT) | (jlong) (f))
+
+static const jlong intrinsic_info_array[vmIntrinsics::ID_LIMIT+1] = {
+#define VM_INTRINSIC_INFO(ignore_id, klass, name, sig, fcode) \
+  ID4(SID_ENUM(klass), SID_ENUM(name), SID_ENUM(sig), vmIntrinsics::fcode),
+
+  0, VM_INTRINSICS_DO(VM_INTRINSIC_INFO,
+                     VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE)
+    0
+#undef VM_INTRINSIC_INFO
+};
+
+inline jlong intrinsic_info(vmIntrinsics::ID id) {
+  return intrinsic_info_array[vmIntrinsics::ID_from((int)id)];
+}
+
+vmSymbols::SID vmIntrinsics::class_for(vmIntrinsics::ID id) {
+  jlong info = intrinsic_info(id);
+  int shift = 2*vmSymbols::log2_SID_LIMIT + log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT);
+  assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1021, "");
+  return vmSymbols::SID( (info >> shift) & mask );
+}
+
+vmSymbols::SID vmIntrinsics::name_for(vmIntrinsics::ID id) {
+  jlong info = intrinsic_info(id);
+  int shift = vmSymbols::log2_SID_LIMIT + log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT);
+  assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1022, "");
+  return vmSymbols::SID( (info >> shift) & mask );
+}
+
+vmSymbols::SID vmIntrinsics::signature_for(vmIntrinsics::ID id) {
+  jlong info = intrinsic_info(id);
+  int shift = log2_FLAG_LIMIT, mask = right_n_bits(vmSymbols::log2_SID_LIMIT);
+  assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 1023, "");
+  return vmSymbols::SID( (info >> shift) & mask );
+}
+
+vmIntrinsics::Flags vmIntrinsics::flags_for(vmIntrinsics::ID id) {
+  jlong info = intrinsic_info(id);
+  int shift = 0, mask = right_n_bits(log2_FLAG_LIMIT);
+  assert(((ID4(1021,1022,1023,15) >> shift) & mask) == 15, "");
+  return Flags( (info >> shift) & mask );
+}
+
+
+#ifndef PRODUCT
+// verify_method performs an extra check on a matched intrinsic method
+
+static bool match_method(Method* m, Symbol* n, Symbol* s) {
+  return (m->name() == n &&
+          m->signature() == s);
+}
+
+static vmIntrinsics::ID match_method_with_klass(Method* m, Symbol* mk) {
+#define VM_INTRINSIC_MATCH(id, klassname, namepart, sigpart, flags) \
+  { Symbol* k = vmSymbols::klassname(); \
+    if (mk == k) { \
+      Symbol* n = vmSymbols::namepart(); \
+      Symbol* s = vmSymbols::sigpart(); \
+      if (match_method(m, n, s)) \
+        return vmIntrinsics::id; \
+    } }
+  VM_INTRINSICS_DO(VM_INTRINSIC_MATCH,
+                   VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE);
+  return vmIntrinsics::_none;
+#undef VM_INTRINSIC_MATCH
+}
+
+void vmIntrinsics::verify_method(ID actual_id, Method* m) {
+  Symbol* mk = m->method_holder()->name();
+  ID declared_id = match_method_with_klass(m, mk);
+
+  if (declared_id == actual_id)  return; // success
+
+  if (declared_id == _none && actual_id != _none && mk == vmSymbols::java_lang_StrictMath()) {
+    // Here are a few special cases in StrictMath not declared in vmSymbols.hpp.
+    switch (actual_id) {
+    case _min:
+    case _max:
+    case _dsqrt:
+      declared_id = match_method_with_klass(m, vmSymbols::java_lang_Math());
+      if (declared_id == actual_id)  return; // acceptable alias
+      break;
+    default:
+        break;
+    }
+  }
+
+  const char* declared_name = name_at(declared_id);
+  const char* actual_name   = name_at(actual_id);
+  methodHandle mh = m;
+  m = NULL;
+  ttyLocker ttyl;
+  if (xtty != NULL) {
+    xtty->begin_elem("intrinsic_misdeclared actual='%s' declared='%s'",
+                     actual_name, declared_name);
+    xtty->method(mh);
+    xtty->end_elem("%s", "");
+  }
+  if (PrintMiscellaneous && (WizardMode || Verbose)) {
+    tty->print_cr("*** misidentified method; %s(%d) should be %s(%d):",
+                  declared_name, declared_id, actual_name, actual_id);
+    mh()->print_short_name(tty);
+    tty->cr();
+  }
+}
+#endif //PRODUCT