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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 "src/hydrogen-mark-deoptimize.h" | 5 #include "src/hydrogen-mark-deoptimize.h" |
| 6 | 6 |
| 7 namespace v8 { | 7 namespace v8 { |
| 8 namespace internal { | 8 namespace internal { |
| 9 | 9 |
| 10 void HMarkDeoptimizeOnUndefinedPhase::Run() { | 10 void HMarkDeoptimizeOnUndefinedPhase::Run() { |
| 11 const ZoneList<HPhi*>* phi_list = graph()->phi_list(); | 11 const ZoneList<HPhi*>* phi_list = graph()->phi_list(); |
| 12 for (int i = 0; i < phi_list->length(); i++) { | 12 for (int i = 0; i < phi_list->length(); i++) { |
| 13 HPhi* phi = phi_list->at(i); | 13 HPhi* phi = phi_list->at(i); |
| 14 if (phi->CheckFlag(HValue::kAllowUndefinedAsNaN) && | 14 if (phi->CheckFlag(HValue::kAllowUndefinedAsNaN) && |
| 15 !phi->CheckUsesForFlag(HValue::kAllowUndefinedAsNaN)) { | 15 !phi->CheckUsesForFlag(HValue::kAllowUndefinedAsNaN)) { |
| 16 ProcessPhi(phi); | 16 ProcessPhi(phi); |
| 17 } | 17 } |
| 18 } | 18 } |
| 19 } | 19 } |
| 20 | 20 |
| 21 | 21 |
| 22 void HMarkDeoptimizeOnUndefinedPhase::ProcessPhi(HPhi* phi) { | 22 void HMarkDeoptimizeOnUndefinedPhase::ProcessPhi(HPhi* phi) { |
| 23 ASSERT(phi->CheckFlag(HValue::kAllowUndefinedAsNaN)); | 23 DCHECK(phi->CheckFlag(HValue::kAllowUndefinedAsNaN)); |
| 24 ASSERT(worklist_.is_empty()); | 24 DCHECK(worklist_.is_empty()); |
| 25 | 25 |
| 26 // Push the phi onto the worklist | 26 // Push the phi onto the worklist |
| 27 phi->ClearFlag(HValue::kAllowUndefinedAsNaN); | 27 phi->ClearFlag(HValue::kAllowUndefinedAsNaN); |
| 28 worklist_.Add(phi, zone()); | 28 worklist_.Add(phi, zone()); |
| 29 | 29 |
| 30 // Process all phis that can reach this phi | 30 // Process all phis that can reach this phi |
| 31 while (!worklist_.is_empty()) { | 31 while (!worklist_.is_empty()) { |
| 32 phi = worklist_.RemoveLast(); | 32 phi = worklist_.RemoveLast(); |
| 33 for (int i = phi->OperandCount() - 1; i >= 0; --i) { | 33 for (int i = phi->OperandCount() - 1; i >= 0; --i) { |
| 34 HValue* input = phi->OperandAt(i); | 34 HValue* input = phi->OperandAt(i); |
| (...skipping 17 matching lines...) Expand all Loading... |
| 52 current->SetFlag(HValue::kAllowUndefinedAsNaN); | 52 current->SetFlag(HValue::kAllowUndefinedAsNaN); |
| 53 } | 53 } |
| 54 } | 54 } |
| 55 current = next; | 55 current = next; |
| 56 } | 56 } |
| 57 } | 57 } |
| 58 } | 58 } |
| 59 | 59 |
| 60 | 60 |
| 61 } } // namespace v8::internal | 61 } } // namespace v8::internal |
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