050bf39d85
matching function, creates a hashmap the specialises the case of keys that simply check pointer equality. I measure an average ~1% improvement on Octane code-load. Review-Url: https://codereview.chromium.org/2369963002 Cr-Commit-Position: refs/heads/master@{#39920}
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
// Copyright 2013 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_CRANKSHAFT_HYDROGEN_BCE_H_
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#define V8_CRANKSHAFT_HYDROGEN_BCE_H_
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#include "src/crankshaft/hydrogen.h"
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namespace v8 {
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namespace internal {
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class BoundsCheckBbData;
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class BoundsCheckKey;
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class BoundsCheckTable : private CustomMatcherZoneHashMap {
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public:
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explicit BoundsCheckTable(Zone* zone);
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INLINE(BoundsCheckBbData** LookupOrInsert(BoundsCheckKey* key, Zone* zone));
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INLINE(void Insert(BoundsCheckKey* key, BoundsCheckBbData* data, Zone* zone));
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INLINE(void Delete(BoundsCheckKey* key));
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private:
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DISALLOW_COPY_AND_ASSIGN(BoundsCheckTable);
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};
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class HBoundsCheckEliminationPhase : public HPhase {
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public:
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explicit HBoundsCheckEliminationPhase(HGraph* graph)
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: HPhase("H_Bounds checks elimination", graph), table_(zone()) { }
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void Run() {
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EliminateRedundantBoundsChecks(graph()->entry_block());
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}
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private:
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void EliminateRedundantBoundsChecks(HBasicBlock* bb);
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BoundsCheckBbData* PreProcessBlock(HBasicBlock* bb);
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void PostProcessBlock(HBasicBlock* bb, BoundsCheckBbData* data);
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BoundsCheckTable table_;
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DISALLOW_COPY_AND_ASSIGN(HBoundsCheckEliminationPhase);
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_CRANKSHAFT_HYDROGEN_BCE_H_
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