Line data Source code
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_REDUNDANT_PHI_H_
6 : #define V8_CRANKSHAFT_HYDROGEN_REDUNDANT_PHI_H_
7 :
8 : #include "src/crankshaft/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 567464 : 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 internal
32 : } // namespace v8
33 :
34 : #endif // V8_CRANKSHAFT_HYDROGEN_REDUNDANT_PHI_H_
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