| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_HYDROGEN_DCE_H_ |
| #define V8_HYDROGEN_DCE_H_ |
| |
| #include "src/hydrogen.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| class HDeadCodeEliminationPhase : public HPhase { |
| public: |
| explicit HDeadCodeEliminationPhase(HGraph* graph) |
| : HPhase("H_Dead code elimination", graph) { } |
| |
| void Run() { |
| MarkLiveInstructions(); |
| RemoveDeadInstructions(); |
| } |
| |
| private: |
| void MarkLive(HValue* instr, ZoneList<HValue*>* worklist); |
| void PrintLive(HValue* ref, HValue* instr); |
| void MarkLiveInstructions(); |
| void RemoveDeadInstructions(); |
| }; |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_HYDROGEN_DCE_H_ |