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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 #ifndef V8_HYDROGEN_UINT32_ANALYSIS_H_ | 5 #ifndef V8_HYDROGEN_UINT32_ANALYSIS_H_ |
| 6 #define V8_HYDROGEN_UINT32_ANALYSIS_H_ | 6 #define V8_HYDROGEN_UINT32_ANALYSIS_H_ |
| 7 | 7 |
| 8 #include "hydrogen.h" | 8 #include "src/hydrogen.h" |
| 9 | 9 |
| 10 namespace v8 { | 10 namespace v8 { |
| 11 namespace internal { | 11 namespace internal { |
| 12 | 12 |
| 13 | 13 |
| 14 // Discover instructions that can be marked with kUint32 flag allowing | 14 // Discover instructions that can be marked with kUint32 flag allowing |
| 15 // them to produce full range uint32 values. | 15 // them to produce full range uint32 values. |
| 16 class HUint32AnalysisPhase : public HPhase { | 16 class HUint32AnalysisPhase : public HPhase { |
| 17 public: | 17 public: |
| 18 explicit HUint32AnalysisPhase(HGraph* graph) | 18 explicit HUint32AnalysisPhase(HGraph* graph) |
| 19 : HPhase("H_Compute safe UInt32 operations", graph), phis_(4, zone()) { } | 19 : HPhase("H_Compute safe UInt32 operations", graph), phis_(4, zone()) { } |
| 20 | 20 |
| 21 void Run(); | 21 void Run(); |
| 22 | 22 |
| 23 private: | 23 private: |
| 24 INLINE(bool IsSafeUint32Use(HValue* val, HValue* use)); | 24 INLINE(bool IsSafeUint32Use(HValue* val, HValue* use)); |
| 25 INLINE(bool Uint32UsesAreSafe(HValue* uint32val)); | 25 INLINE(bool Uint32UsesAreSafe(HValue* uint32val)); |
| 26 INLINE(bool CheckPhiOperands(HPhi* phi)); | 26 INLINE(bool CheckPhiOperands(HPhi* phi)); |
| 27 INLINE(void UnmarkPhi(HPhi* phi, ZoneList<HPhi*>* worklist)); | 27 INLINE(void UnmarkPhi(HPhi* phi, ZoneList<HPhi*>* worklist)); |
| 28 INLINE(void UnmarkUnsafePhis()); | 28 INLINE(void UnmarkUnsafePhis()); |
| 29 | 29 |
| 30 ZoneList<HPhi*> phis_; | 30 ZoneList<HPhi*> phis_; |
| 31 }; | 31 }; |
| 32 | 32 |
| 33 | 33 |
| 34 } } // namespace v8::internal | 34 } } // namespace v8::internal |
| 35 | 35 |
| 36 #endif // V8_HYDROGEN_UINT32_ANALYSIS_H_ | 36 #endif // V8_HYDROGEN_UINT32_ANALYSIS_H_ |
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