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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "hydrogen-canonicalize.h" | 5 #include "src/hydrogen-canonicalize.h" |
6 #include "hydrogen-redundant-phi.h" | 6 #include "src/hydrogen-redundant-phi.h" |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 | 10 |
11 void HCanonicalizePhase::Run() { | 11 void HCanonicalizePhase::Run() { |
12 const ZoneList<HBasicBlock*>* blocks(graph()->blocks()); | 12 const ZoneList<HBasicBlock*>* blocks(graph()->blocks()); |
13 // Before removing no-op instructions, save their semantic value. | 13 // Before removing no-op instructions, save their semantic value. |
14 // We must be careful not to set the flag unnecessarily, because GVN | 14 // We must be careful not to set the flag unnecessarily, because GVN |
15 // cannot identify two instructions when their flag value differs. | 15 // cannot identify two instructions when their flag value differs. |
16 for (int i = 0; i < blocks->length(); ++i) { | 16 for (int i = 0; i < blocks->length(); ++i) { |
(...skipping 29 matching lines...) Expand all Loading... |
46 // Now canonicalize each instruction. | 46 // Now canonicalize each instruction. |
47 for (HInstructionIterator it(blocks->at(i)); !it.Done(); it.Advance()) { | 47 for (HInstructionIterator it(blocks->at(i)); !it.Done(); it.Advance()) { |
48 HInstruction* instr = it.Current(); | 48 HInstruction* instr = it.Current(); |
49 HValue* value = instr->Canonicalize(); | 49 HValue* value = instr->Canonicalize(); |
50 if (value != instr) instr->DeleteAndReplaceWith(value); | 50 if (value != instr) instr->DeleteAndReplaceWith(value); |
51 } | 51 } |
52 } | 52 } |
53 } | 53 } |
54 | 54 |
55 } } // namespace v8::internal | 55 } } // namespace v8::internal |
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