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// 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_REDUNDANT_PHI_H_
#define V8_HYDROGEN_REDUNDANT_PHI_H_
#include "src/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 v8::internal
#endif // V8_HYDROGEN_REDUNDANT_PHI_H_
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