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27
28#ifndef V8_HYDROGEN_MINUS_ZERO_H_
29#define V8_HYDROGEN_MINUS_ZERO_H_
30
31#include "hydrogen.h"
32
33namespace v8 {
34namespace internal {
35
36
37class HComputeMinusZeroChecksPhase : public HPhase {
38 public:
39  explicit HComputeMinusZeroChecksPhase(HGraph* graph)
40      : HPhase("H_Compute minus zero checks", graph),
41        visited_(graph->GetMaximumValueID(), zone()) { }
42
43  void Run();
44
45 private:
46  void PropagateMinusZeroChecks(HValue* value);
47
48  BitVector visited_;
49
50  DISALLOW_COPY_AND_ASSIGN(HComputeMinusZeroChecksPhase);
51};
52
53
54} }  // namespace v8::internal
55
56#endif  // V8_HYDROGEN_MINUS_ZERO_H_
57