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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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