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| 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_BCE_H_ | |
| 6 #define V8_HYDROGEN_BCE_H_ | |
| 7 | |
| 8 #include "src/hydrogen.h" | |
| 9 | |
| 10 namespace v8 { | |
| 11 namespace internal { | |
| 12 | |
| 13 | |
| 14 class BoundsCheckBbData; | |
| 15 class BoundsCheckKey; | |
| 16 class BoundsCheckTable : private ZoneHashMap { | |
| 17 public: | |
| 18 explicit BoundsCheckTable(Zone* zone); | |
| 19 | |
| 20 INLINE(BoundsCheckBbData** LookupOrInsert(BoundsCheckKey* key, Zone* zone)); | |
| 21 INLINE(void Insert(BoundsCheckKey* key, BoundsCheckBbData* data, Zone* zone)); | |
| 22 INLINE(void Delete(BoundsCheckKey* key)); | |
| 23 | |
| 24 private: | |
| 25 DISALLOW_COPY_AND_ASSIGN(BoundsCheckTable); | |
| 26 }; | |
| 27 | |
| 28 | |
| 29 class HBoundsCheckEliminationPhase : public HPhase { | |
| 30 public: | |
| 31 explicit HBoundsCheckEliminationPhase(HGraph* graph) | |
| 32 : HPhase("H_Bounds checks elimination", graph), table_(zone()) { } | |
| 33 | |
| 34 void Run() { | |
| 35 EliminateRedundantBoundsChecks(graph()->entry_block()); | |
| 36 } | |
| 37 | |
| 38 private: | |
| 39 void EliminateRedundantBoundsChecks(HBasicBlock* bb); | |
| 40 BoundsCheckBbData* PreProcessBlock(HBasicBlock* bb); | |
| 41 void PostProcessBlock(HBasicBlock* bb, BoundsCheckBbData* data); | |
| 42 | |
| 43 BoundsCheckTable table_; | |
| 44 | |
| 45 DISALLOW_COPY_AND_ASSIGN(HBoundsCheckEliminationPhase); | |
| 46 }; | |
| 47 | |
| 48 | |
| 49 } // namespace internal | |
| 50 } // namespace v8 | |
| 51 | |
| 52 #endif // V8_HYDROGEN_BCE_H_ | |
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