Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 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_BCE_H_ |
| 6 | #define V8_CRANKSHAFT_HYDROGEN_BCE_H_ |
| 7 | |
| 8 | #include "src/crankshaft/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_CRANKSHAFT_HYDROGEN_BCE_H_ |