hotspot/src/share/vm/opto/multnode.hpp
author roland
Sat, 19 Oct 2013 12:16:43 +0200
changeset 21089 e1986ff6fe2e
parent 17383 3665c0901a0d
child 22234 da823d78ad65
permissions -rw-r--r--
8024069: replace_in_map() should operate on parent maps Summary: type information gets lost because replace_in_map() doesn't update parent maps Reviewed-by: kvn, twisti
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
     2
 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 670
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 670
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 670
diff changeset
    21
 * questions.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    25
#ifndef SHARE_VM_OPTO_MULTNODE_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    26
#define SHARE_VM_OPTO_MULTNODE_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    27
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    28
#include "opto/node.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    29
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    30
class Matcher;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
class ProjNode;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
//------------------------------MultiNode--------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
// This class defines a MultiNode, a Node which produces many values.  The
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
// values are wrapped up in a tuple Type, i.e. a TypeTuple.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    36
class MultiNode : public Node {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
  MultiNode( uint required ) : Node(required) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
    init_class_id(Class_Multi);
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    41
  virtual int Opcode() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    42
  virtual const Type *bottom_type() const = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    43
  virtual bool       is_CFG() const { return true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    44
  virtual uint hash() const { return NO_HASH; }  // CFG nodes do not hash
489c9b5090e2 Initial load
duke
parents:
diff changeset
    45
  virtual bool depends_only_on_test() const { return false; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    46
  virtual const RegMask &out_RegMask() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    47
  virtual Node *match( const ProjNode *proj, const Matcher *m );
489c9b5090e2 Initial load
duke
parents:
diff changeset
    48
  virtual uint ideal_reg() const { return NotAMachineReg; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    49
  ProjNode* proj_out(uint which_proj) const; // Get a named projection
489c9b5090e2 Initial load
duke
parents:
diff changeset
    50
489c9b5090e2 Initial load
duke
parents:
diff changeset
    51
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
    52
489c9b5090e2 Initial load
duke
parents:
diff changeset
    53
//------------------------------ProjNode---------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
    54
// This class defines a Projection node.  Projections project a single element
489c9b5090e2 Initial load
duke
parents:
diff changeset
    55
// out of a tuple (or Signature) type.  Only MultiNodes produce TypeTuple
489c9b5090e2 Initial load
duke
parents:
diff changeset
    56
// results.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    57
class ProjNode : public Node {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    58
protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    59
  virtual uint hash() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    60
  virtual uint cmp( const Node &n ) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    61
  virtual uint size_of() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    62
  void check_con() const;       // Called from constructor.
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 7397
diff changeset
    63
  const Type* proj_type(const Type* t) const;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    64
489c9b5090e2 Initial load
duke
parents:
diff changeset
    65
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    66
  ProjNode( Node *src, uint con, bool io_use = false )
489c9b5090e2 Initial load
duke
parents:
diff changeset
    67
    : Node( src ), _con(con), _is_io_use(io_use)
489c9b5090e2 Initial load
duke
parents:
diff changeset
    68
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    69
    init_class_id(Class_Proj);
373
427fb4ca6a1e 6625997: CastPP, CheckCastPP and Proj nodes are not dead loop safe
kvn
parents: 1
diff changeset
    70
    // Optimistic setting. Need additional checks in Node::is_dead_loop_safe().
427fb4ca6a1e 6625997: CastPP, CheckCastPP and Proj nodes are not dead loop safe
kvn
parents: 1
diff changeset
    71
    if (con != TypeFunc::Memory || src->is_Start())
427fb4ca6a1e 6625997: CastPP, CheckCastPP and Proj nodes are not dead loop safe
kvn
parents: 1
diff changeset
    72
      init_flags(Flag_is_dead_loop_safe);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    73
    debug_only(check_con());
489c9b5090e2 Initial load
duke
parents:
diff changeset
    74
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    75
  const uint _con;              // The field in the tuple we are projecting
489c9b5090e2 Initial load
duke
parents:
diff changeset
    76
  const bool _is_io_use;        // Used to distinguish between the projections
489c9b5090e2 Initial load
duke
parents:
diff changeset
    77
                                // used on the control and io paths from a macro node
489c9b5090e2 Initial load
duke
parents:
diff changeset
    78
  virtual int Opcode() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    79
  virtual bool      is_CFG() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    80
  virtual bool depends_only_on_test() const { return false; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    81
  virtual const Type *bottom_type() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    82
  virtual const TypePtr *adr_type() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    83
  virtual bool pinned() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    84
  virtual const Type *Value( PhaseTransform *phase ) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    85
  virtual uint ideal_reg() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    86
  virtual const RegMask &out_RegMask() const;
17383
3665c0901a0d 6934604: enable parts of EliminateAutoBox by default
kvn
parents: 7397
diff changeset
    87
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    88
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    89
  virtual void dump_spec(outputStream *st) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    90
#endif
21089
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    91
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    92
  // Return true if proj is for "proj->[region->..]call_uct"
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    93
  bool is_uncommon_trap_proj(Deoptimization::DeoptReason reason);
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    94
  // Return true for    "if(test)-> proj -> ...
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    95
  //                          |
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    96
  //                          V
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    97
  //                      other_proj->[region->..]call_uct"
e1986ff6fe2e 8024069: replace_in_map() should operate on parent maps
roland
parents: 17383
diff changeset
    98
  bool is_uncommon_trap_if_pattern(Deoptimization::DeoptReason reason);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    99
};
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
   100
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
   101
#endif // SHARE_VM_OPTO_MULTNODE_HPP