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https://gitee.com/openharmony/arkcompiler_ets_runtime
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9e52ecdc90
Issue: https://gitee.com/openharmony/arkcompiler_ets_runtime/issues/I83EHP?from=project-issue Change-Id: I471ed10b269c6b810d990acc6389878f7b418a8e Signed-off-by: Yong Zhou <zhouyong44@huawei.com>
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*
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* Copyright (c) 2023 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ECMASCRIPT_COMPILER_VALUE_NUMBERING_H
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#define ECMASCRIPT_COMPILER_VALUE_NUMBERING_H
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#include "ecmascript/compiler/circuit_builder.h"
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#include "ecmascript/compiler/combined_pass_visitor.h"
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#include "ecmascript/compiler/gate_accessor.h"
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#include "ecmascript/mem/chunk_containers.h"
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namespace panda::ecmascript::kungfu {
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class ValueNumbering : public PassVisitor {
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public:
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ValueNumbering(Circuit *circuit, RPOVisitor *visitor, Chunk* chunk, bool useNewGVN, bool enableLog)
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: PassVisitor(circuit, chunk, visitor), entries_(nullptr), useNewGVN_(useNewGVN),
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enableLog_(enableLog) {}
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~ValueNumbering() = default;
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GateRef VisitGate(GateRef gate) override;
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bool CheckReplacement(GateRef lhs, GateRef rhs);
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int GetoptimizedGateCount()
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{
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return optimizedGateCount;
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}
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private:
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void Grow();
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void EnsureCapacity();
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void InitEntries(size_t initSize);
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size_t HashCode(GateRef gate);
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void SetEntry(size_t hash, GateRef gate)
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{
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entries_[hash & (entriesLength_ - 1)] = gate;
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}
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static const uint32_t CACHE_LENGTH_BIT = 8;
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static const uint32_t CACHE_LENGTH = (1U << CACHE_LENGTH_BIT);
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const uint8_t LOAD_FACTOR_THRESHOLD = 4;
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uint32_t entriesLength_ = (1U << CACHE_LENGTH_BIT);
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uint32_t entriesSize_ = 0;
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GateRef* entries_;
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bool useNewGVN_;
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int optimizedGateCount = 0;
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bool enableLog_ = false;
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};
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} // panda::ecmascript::kungfu
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#endif // ECMASCRIPT_COMPILER_VALUE_NUMBERING_H
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