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_REDUNDANT_PHI_H_ 6 #define V8_HYDROGEN_REDUNDANT_PHI_H_ 7 8 #include "src/hydrogen.h" 9 10 namespace v8 { 11 namespace internal { 12 13 14 // Replace all phis consisting of a single non-loop operand plus any number of 15 // loop operands by that single non-loop operand. 16 class HRedundantPhiEliminationPhase : public HPhase { 17 public: 18 explicit HRedundantPhiEliminationPhase(HGraph* graph) 19 : HPhase("H_Redundant phi elimination", graph) { } 20 21 void Run(); 22 void ProcessBlock(HBasicBlock* block); 23 24 private: 25 void ProcessPhis(const ZoneList<HPhi*>* phis); 26 27 DISALLOW_COPY_AND_ASSIGN(HRedundantPhiEliminationPhase); 28 }; 29 30 31 } } // namespace v8::internal 32 33 #endif // V8_HYDROGEN_REDUNDANT_PHI_H_ 34
