Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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_CRANKSHAFT_HYDROGEN_DCE_H_ |
| 6 | #define V8_CRANKSHAFT_HYDROGEN_DCE_H_ |
| 7 | |
| 8 | #include "src/crankshaft/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_CRANKSHAFT_HYDROGEN_DCE_H_ |