Mercurial > hg > truffle
annotate src/share/vm/opto/multnode.cpp @ 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 | da91efe96a93 |
| children | c9ccd7b85f20 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 #include "precompiled.hpp" |
| 10278 | 26 #include "opto/callnode.hpp" |
| 1972 | 27 #include "opto/matcher.hpp" |
| 28 #include "opto/multnode.hpp" | |
| 29 #include "opto/opcodes.hpp" | |
| 30 #include "opto/phaseX.hpp" | |
| 31 #include "opto/regmask.hpp" | |
| 32 #include "opto/type.hpp" | |
| 0 | 33 |
| 34 //============================================================================= | |
| 35 //------------------------------MultiNode-------------------------------------- | |
| 36 const RegMask &MultiNode::out_RegMask() const { | |
| 37 return RegMask::Empty; | |
| 38 } | |
| 39 | |
| 40 Node *MultiNode::match( const ProjNode *proj, const Matcher *m ) { return proj->clone(); } | |
| 41 | |
| 42 //------------------------------proj_out--------------------------------------- | |
| 43 // Get a named projection | |
| 44 ProjNode* MultiNode::proj_out(uint which_proj) const { | |
| 45 assert(Opcode() != Op_If || which_proj == (uint)true || which_proj == (uint)false, "must be 1 or 0"); | |
| 46 assert(Opcode() != Op_If || outcnt() == 2, "bad if #1"); | |
| 47 for( DUIterator_Fast imax, i = fast_outs(imax); i < imax; i++ ) { | |
| 48 Node *p = fast_out(i); | |
| 49 if( !p->is_Proj() ) { | |
| 50 assert(p == this && this->is_Start(), "else must be proj"); | |
| 51 continue; | |
| 52 } | |
| 53 ProjNode *proj = p->as_Proj(); | |
| 54 if( proj->_con == which_proj ) { | |
| 55 assert(Opcode() != Op_If || proj->Opcode() == (which_proj?Op_IfTrue:Op_IfFalse), "bad if #2"); | |
| 56 return proj; | |
| 57 } | |
| 58 } | |
| 59 return NULL; | |
| 60 } | |
| 61 | |
| 62 //============================================================================= | |
| 63 //------------------------------ProjNode--------------------------------------- | |
| 64 uint ProjNode::hash() const { | |
| 65 // only one input | |
| 66 return (uintptr_t)in(TypeFunc::Control) + (_con << 1) + (_is_io_use ? 1 : 0); | |
| 67 } | |
| 68 uint ProjNode::cmp( const Node &n ) const { return _con == ((ProjNode&)n)._con && ((ProjNode&)n)._is_io_use == _is_io_use; } | |
| 69 uint ProjNode::size_of() const { return sizeof(ProjNode); } | |
| 70 | |
| 71 // Test if we propagate interesting control along this projection | |
| 72 bool ProjNode::is_CFG() const { | |
| 73 Node *def = in(0); | |
| 74 return (_con == TypeFunc::Control && def->is_CFG()); | |
| 75 } | |
| 76 | |
| 10278 | 77 const Type* ProjNode::proj_type(const Type* t) const { |
| 78 if (t == Type::TOP) { | |
| 79 return Type::TOP; | |
| 80 } | |
| 81 if (t == Type::BOTTOM) { | |
| 82 return Type::BOTTOM; | |
| 83 } | |
| 84 t = t->is_tuple()->field_at(_con); | |
| 85 Node* n = in(0); | |
| 86 if ((_con == TypeFunc::Parms) && | |
| 87 n->is_CallStaticJava() && n->as_CallStaticJava()->is_boxing_method()) { | |
| 88 // The result of autoboxing is always non-null on normal path. | |
| 89 t = t->join(TypePtr::NOTNULL); | |
| 90 } | |
| 91 return t; | |
| 92 } | |
| 93 | |
| 0 | 94 const Type *ProjNode::bottom_type() const { |
| 10278 | 95 if (in(0) == NULL) return Type::TOP; |
| 96 return proj_type(in(0)->bottom_type()); | |
| 0 | 97 } |
| 98 | |
| 99 const TypePtr *ProjNode::adr_type() const { | |
| 100 if (bottom_type() == Type::MEMORY) { | |
| 101 // in(0) might be a narrow MemBar; otherwise we will report TypePtr::BOTTOM | |
| 102 const TypePtr* adr_type = in(0)->adr_type(); | |
| 103 #ifdef ASSERT | |
| 104 if (!is_error_reported() && !Node::in_dump()) | |
| 105 assert(adr_type != NULL, "source must have adr_type"); | |
| 106 #endif | |
| 107 return adr_type; | |
| 108 } | |
| 109 assert(bottom_type()->base() != Type::Memory, "no other memories?"); | |
| 110 return NULL; | |
| 111 } | |
| 112 | |
| 113 bool ProjNode::pinned() const { return in(0)->pinned(); } | |
| 114 #ifndef PRODUCT | |
| 115 void ProjNode::dump_spec(outputStream *st) const { st->print("#%d",_con); if(_is_io_use) st->print(" (i_o_use)");} | |
| 116 #endif | |
| 117 | |
| 118 //----------------------------check_con---------------------------------------- | |
| 119 void ProjNode::check_con() const { | |
| 120 Node* n = in(0); | |
| 121 if (n == NULL) return; // should be assert, but NodeHash makes bogons | |
| 122 if (n->is_Mach()) return; // mach. projs. are not type-safe | |
| 123 if (n->is_Start()) return; // alas, starts can have mach. projs. also | |
| 124 if (_con == SCMemProjNode::SCMEMPROJCON ) return; | |
| 125 const Type* t = n->bottom_type(); | |
| 126 if (t == Type::TOP) return; // multi is dead | |
| 127 assert(_con < t->is_tuple()->cnt(), "ProjNode::_con must be in range"); | |
| 128 } | |
| 129 | |
| 130 //------------------------------Value------------------------------------------ | |
| 131 const Type *ProjNode::Value( PhaseTransform *phase ) const { | |
| 10278 | 132 if (in(0) == NULL) return Type::TOP; |
| 133 return proj_type(phase->type(in(0))); | |
| 0 | 134 } |
| 135 | |
| 136 //------------------------------out_RegMask------------------------------------ | |
| 137 // Pass the buck uphill | |
| 138 const RegMask &ProjNode::out_RegMask() const { | |
| 139 return RegMask::Empty; | |
| 140 } | |
| 141 | |
| 142 //------------------------------ideal_reg-------------------------------------- | |
| 143 uint ProjNode::ideal_reg() const { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
144 return bottom_type()->ideal_reg(); |
| 0 | 145 } |