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annotate src/share/vm/opto/multnode.cpp @ 12888:4a2acfb16e97
8025657: compiler/intrinsics/mathexact/ConstantTest.java fails on assert in lcm.cpp on solaris x64
Reviewed-by: kvn, twisti
author | rbackman |
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date | Fri, 11 Oct 2013 12:06:14 +0200 |
parents | c9ccd7b85f20 |
children | 3213ba4d3dff |
rev | line source |
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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 |
c18cbe5936b8
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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" |
12323 | 28 #include "opto/mathexactnode.hpp" |
1972 | 29 #include "opto/multnode.hpp" |
30 #include "opto/opcodes.hpp" | |
31 #include "opto/phaseX.hpp" | |
32 #include "opto/regmask.hpp" | |
33 #include "opto/type.hpp" | |
0 | 34 |
35 //============================================================================= | |
36 //------------------------------MultiNode-------------------------------------- | |
37 const RegMask &MultiNode::out_RegMask() const { | |
38 return RegMask::Empty; | |
39 } | |
40 | |
41 Node *MultiNode::match( const ProjNode *proj, const Matcher *m ) { return proj->clone(); } | |
42 | |
43 //------------------------------proj_out--------------------------------------- | |
44 // Get a named projection | |
45 ProjNode* MultiNode::proj_out(uint which_proj) const { | |
46 assert(Opcode() != Op_If || which_proj == (uint)true || which_proj == (uint)false, "must be 1 or 0"); | |
47 assert(Opcode() != Op_If || outcnt() == 2, "bad if #1"); | |
48 for( DUIterator_Fast imax, i = fast_outs(imax); i < imax; i++ ) { | |
49 Node *p = fast_out(i); | |
12323 | 50 if (p->is_Proj()) { |
51 ProjNode *proj = p->as_Proj(); | |
52 if (proj->_con == which_proj) { | |
53 assert(Opcode() != Op_If || proj->Opcode() == (which_proj?Op_IfTrue:Op_IfFalse), "bad if #2"); | |
54 return proj; | |
55 } | |
56 } else if (p->is_FlagsProj()) { | |
57 FlagsProjNode *proj = p->as_FlagsProj(); | |
58 if (proj->_con == which_proj) { | |
59 return proj; | |
60 } | |
61 } else { | |
0 | 62 assert(p == this && this->is_Start(), "else must be proj"); |
63 continue; | |
64 } | |
65 } | |
66 return NULL; | |
67 } | |
68 | |
69 //============================================================================= | |
70 //------------------------------ProjNode--------------------------------------- | |
71 uint ProjNode::hash() const { | |
72 // only one input | |
73 return (uintptr_t)in(TypeFunc::Control) + (_con << 1) + (_is_io_use ? 1 : 0); | |
74 } | |
75 uint ProjNode::cmp( const Node &n ) const { return _con == ((ProjNode&)n)._con && ((ProjNode&)n)._is_io_use == _is_io_use; } | |
76 uint ProjNode::size_of() const { return sizeof(ProjNode); } | |
77 | |
78 // Test if we propagate interesting control along this projection | |
79 bool ProjNode::is_CFG() const { | |
80 Node *def = in(0); | |
81 return (_con == TypeFunc::Control && def->is_CFG()); | |
82 } | |
83 | |
10278 | 84 const Type* ProjNode::proj_type(const Type* t) const { |
85 if (t == Type::TOP) { | |
86 return Type::TOP; | |
87 } | |
88 if (t == Type::BOTTOM) { | |
89 return Type::BOTTOM; | |
90 } | |
91 t = t->is_tuple()->field_at(_con); | |
92 Node* n = in(0); | |
93 if ((_con == TypeFunc::Parms) && | |
94 n->is_CallStaticJava() && n->as_CallStaticJava()->is_boxing_method()) { | |
95 // The result of autoboxing is always non-null on normal path. | |
96 t = t->join(TypePtr::NOTNULL); | |
97 } | |
98 return t; | |
99 } | |
100 | |
0 | 101 const Type *ProjNode::bottom_type() const { |
10278 | 102 if (in(0) == NULL) return Type::TOP; |
103 return proj_type(in(0)->bottom_type()); | |
0 | 104 } |
105 | |
106 const TypePtr *ProjNode::adr_type() const { | |
107 if (bottom_type() == Type::MEMORY) { | |
108 // in(0) might be a narrow MemBar; otherwise we will report TypePtr::BOTTOM | |
109 const TypePtr* adr_type = in(0)->adr_type(); | |
110 #ifdef ASSERT | |
111 if (!is_error_reported() && !Node::in_dump()) | |
112 assert(adr_type != NULL, "source must have adr_type"); | |
113 #endif | |
114 return adr_type; | |
115 } | |
116 assert(bottom_type()->base() != Type::Memory, "no other memories?"); | |
117 return NULL; | |
118 } | |
119 | |
120 bool ProjNode::pinned() const { return in(0)->pinned(); } | |
121 #ifndef PRODUCT | |
122 void ProjNode::dump_spec(outputStream *st) const { st->print("#%d",_con); if(_is_io_use) st->print(" (i_o_use)");} | |
123 #endif | |
124 | |
125 //----------------------------check_con---------------------------------------- | |
126 void ProjNode::check_con() const { | |
127 Node* n = in(0); | |
128 if (n == NULL) return; // should be assert, but NodeHash makes bogons | |
129 if (n->is_Mach()) return; // mach. projs. are not type-safe | |
130 if (n->is_Start()) return; // alas, starts can have mach. projs. also | |
131 if (_con == SCMemProjNode::SCMEMPROJCON ) return; | |
132 const Type* t = n->bottom_type(); | |
133 if (t == Type::TOP) return; // multi is dead | |
134 assert(_con < t->is_tuple()->cnt(), "ProjNode::_con must be in range"); | |
135 } | |
136 | |
137 //------------------------------Value------------------------------------------ | |
138 const Type *ProjNode::Value( PhaseTransform *phase ) const { | |
10278 | 139 if (in(0) == NULL) return Type::TOP; |
140 return proj_type(phase->type(in(0))); | |
0 | 141 } |
142 | |
143 //------------------------------out_RegMask------------------------------------ | |
144 // Pass the buck uphill | |
145 const RegMask &ProjNode::out_RegMask() const { | |
146 return RegMask::Empty; | |
147 } | |
148 | |
149 //------------------------------ideal_reg-------------------------------------- | |
150 uint ProjNode::ideal_reg() const { | |
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151 return bottom_type()->ideal_reg(); |
0 | 152 } |