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https://gitee.com/openharmony/arkcompiler_ets_runtime
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4f0fc29c76
Issue: https://gitee.com/openharmony/arkcompiler_ets_runtime/issues/I6WTH8 Signed-off-by: sunzhe23 <sunzhe23@huawei.com>
67 lines
2.0 KiB
C++
67 lines
2.0 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/gate_accessor.h"
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#include "ecmascript/compiler/graph_visitor.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 GraphVisitor {
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public:
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ValueNumbering(Circuit *circuit, bool enableLog, const std::string& name, Chunk* chunk)
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: GraphVisitor(circuit, chunk), enableLog_(enableLog),
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methodName_(name), entries_(chunk) {}
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~ValueNumbering() = default;
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void Run();
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GateRef VisitGate(GateRef gate) override;
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bool CheckReplacement(GateRef lhs, GateRef rhs);
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private:
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bool IsLogEnabled() const
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{
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return enableLog_;
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}
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const std::string& GetMethodName() const
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{
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return methodName_;
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}
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size_t HashCode(GateRef gate);
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GateRef GetEntry(size_t hash)
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{
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ASSERT(hash < entries_.size());
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return entries_[hash];
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}
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void SetEntry(size_t hash, GateRef gate)
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{
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ASSERT(hash < entries_.size());
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entries_[hash] = 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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bool enableLog_ {false};
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std::string methodName_;
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ChunkVector<GateRef> entries_;
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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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