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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef V8_HYDROGEN_DCE_H_ | |
6 #define V8_HYDROGEN_DCE_H_ | |
7 | |
8 #include "src/hydrogen.h" | |
9 | |
10 namespace v8 { | |
11 namespace internal { | |
12 | |
13 | |
14 class HDeadCodeEliminationPhase : public HPhase { | |
15 public: | |
16 explicit HDeadCodeEliminationPhase(HGraph* graph) | |
17 : HPhase("H_Dead code elimination", graph) { } | |
18 | |
19 void Run() { | |
20 MarkLiveInstructions(); | |
21 RemoveDeadInstructions(); | |
22 } | |
23 | |
24 private: | |
25 void MarkLive(HValue* instr, ZoneList<HValue*>* worklist); | |
26 void PrintLive(HValue* ref, HValue* instr); | |
27 void MarkLiveInstructions(); | |
28 void RemoveDeadInstructions(); | |
29 }; | |
30 | |
31 | |
32 } // namespace internal | |
33 } // namespace v8 | |
34 | |
35 #endif // V8_HYDROGEN_DCE_H_ | |
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