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27
28#ifndef V8_HYDROGEN_BCE_H_
29#define V8_HYDROGEN_BCE_H_
30
31#include "hydrogen.h"
32
33namespace v8 {
34namespace internal {
35
36
37class BoundsCheckBbData;
38class BoundsCheckKey;
39class BoundsCheckTable : private ZoneHashMap {
40 public:
41  explicit BoundsCheckTable(Zone* zone);
42
43  INLINE(BoundsCheckBbData** LookupOrInsert(BoundsCheckKey* key, Zone* zone));
44  INLINE(void Insert(BoundsCheckKey* key, BoundsCheckBbData* data, Zone* zone));
45  INLINE(void Delete(BoundsCheckKey* key));
46
47 private:
48  DISALLOW_COPY_AND_ASSIGN(BoundsCheckTable);
49};
50
51
52class HBoundsCheckEliminationPhase : public HPhase {
53 public:
54  explicit HBoundsCheckEliminationPhase(HGraph* graph)
55      : HPhase("H_Bounds checks elimination", graph), table_(zone()) { }
56
57  void Run() {
58    EliminateRedundantBoundsChecks(graph()->entry_block());
59  }
60
61 private:
62  void EliminateRedundantBoundsChecks(HBasicBlock* bb);
63  BoundsCheckBbData* PreProcessBlock(HBasicBlock* bb);
64  void PostProcessBlock(HBasicBlock* bb, BoundsCheckBbData* data);
65
66  BoundsCheckTable table_;
67
68  DISALLOW_COPY_AND_ASSIGN(HBoundsCheckEliminationPhase);
69};
70
71
72} }  // namespace v8::internal
73
74#endif  // V8_HYDROGEN_BCE_H_
75