| // 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_CRANKSHAFT_HYDROGEN_REDUNDANT_PHI_H_ |
| #define V8_CRANKSHAFT_HYDROGEN_REDUNDANT_PHI_H_ |
| |
| #include "src/crankshaft/hydrogen.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| // Replace all phis consisting of a single non-loop operand plus any number of |
| // loop operands by that single non-loop operand. |
| class HRedundantPhiEliminationPhase : public HPhase { |
| public: |
| explicit HRedundantPhiEliminationPhase(HGraph* graph) |
| : HPhase("H_Redundant phi elimination", graph) { } |
| |
| void Run(); |
| void ProcessBlock(HBasicBlock* block); |
| |
| private: |
| void ProcessPhis(const ZoneList<HPhi*>* phis); |
| |
| DISALLOW_COPY_AND_ASSIGN(HRedundantPhiEliminationPhase); |
| }; |
| |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_CRANKSHAFT_HYDROGEN_REDUNDANT_PHI_H_ |