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 v8::internal 50 51 #endif // V8_HYDROGEN_BCE_H_ 52
