Mercurial > hg > truffle
annotate src/share/vm/opto/multnode.hpp @ 10278:6f3fd5150b67
6934604: enable parts of EliminateAutoBox by default
Summary: Resurrected autobox elimination code and enabled part of it by default.
Reviewed-by: roland, twisti
| author | kvn |
|---|---|
| date | Wed, 08 May 2013 15:08:01 -0700 |
| parents | f95d63e2154a |
| children | 3213ba4d3dff |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_OPTO_MULTNODE_HPP |
| 26 #define SHARE_VM_OPTO_MULTNODE_HPP | |
| 27 | |
| 28 #include "opto/node.hpp" | |
| 29 | |
| 0 | 30 class Matcher; |
| 31 class ProjNode; | |
| 32 | |
| 33 //------------------------------MultiNode-------------------------------------- | |
| 34 // This class defines a MultiNode, a Node which produces many values. The | |
| 35 // values are wrapped up in a tuple Type, i.e. a TypeTuple. | |
| 36 class MultiNode : public Node { | |
| 37 public: | |
| 38 MultiNode( uint required ) : Node(required) { | |
| 39 init_class_id(Class_Multi); | |
| 40 } | |
| 41 virtual int Opcode() const; | |
| 42 virtual const Type *bottom_type() const = 0; | |
| 43 virtual bool is_CFG() const { return true; } | |
| 44 virtual uint hash() const { return NO_HASH; } // CFG nodes do not hash | |
| 45 virtual bool depends_only_on_test() const { return false; } | |
| 46 virtual const RegMask &out_RegMask() const; | |
| 47 virtual Node *match( const ProjNode *proj, const Matcher *m ); | |
| 48 virtual uint ideal_reg() const { return NotAMachineReg; } | |
| 49 ProjNode* proj_out(uint which_proj) const; // Get a named projection | |
| 50 | |
| 51 }; | |
| 52 | |
| 53 //------------------------------ProjNode--------------------------------------- | |
| 54 // This class defines a Projection node. Projections project a single element | |
| 55 // out of a tuple (or Signature) type. Only MultiNodes produce TypeTuple | |
| 56 // results. | |
| 57 class ProjNode : public Node { | |
| 58 protected: | |
| 59 virtual uint hash() const; | |
| 60 virtual uint cmp( const Node &n ) const; | |
| 61 virtual uint size_of() const; | |
| 62 void check_con() const; // Called from constructor. | |
| 10278 | 63 const Type* proj_type(const Type* t) const; |
| 0 | 64 |
| 65 public: | |
| 66 ProjNode( Node *src, uint con, bool io_use = false ) | |
| 67 : Node( src ), _con(con), _is_io_use(io_use) | |
| 68 { | |
| 69 init_class_id(Class_Proj); | |
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6625997: CastPP, CheckCastPP and Proj nodes are not dead loop safe
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70 // Optimistic setting. Need additional checks in Node::is_dead_loop_safe(). |
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72f4a668df19
6625997: CastPP, CheckCastPP and Proj nodes are not dead loop safe
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71 if (con != TypeFunc::Memory || src->is_Start()) |
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72f4a668df19
6625997: CastPP, CheckCastPP and Proj nodes are not dead loop safe
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72 init_flags(Flag_is_dead_loop_safe); |
| 0 | 73 debug_only(check_con()); |
| 74 } | |
| 75 const uint _con; // The field in the tuple we are projecting | |
| 76 const bool _is_io_use; // Used to distinguish between the projections | |
| 77 // used on the control and io paths from a macro node | |
| 78 virtual int Opcode() const; | |
| 79 virtual bool is_CFG() const; | |
| 80 virtual bool depends_only_on_test() const { return false; } | |
| 81 virtual const Type *bottom_type() const; | |
| 82 virtual const TypePtr *adr_type() const; | |
| 83 virtual bool pinned() const; | |
| 84 virtual const Type *Value( PhaseTransform *phase ) const; | |
| 85 virtual uint ideal_reg() const; | |
| 86 virtual const RegMask &out_RegMask() const; | |
| 10278 | 87 |
| 0 | 88 #ifndef PRODUCT |
| 89 virtual void dump_spec(outputStream *st) const; | |
| 90 #endif | |
| 91 }; | |
| 1972 | 92 |
| 93 #endif // SHARE_VM_OPTO_MULTNODE_HPP |