mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
synced 2024-10-07 08:03:29 +00:00
8aafa26d2f
Issues: https://gitee.com/openharmony/arkcompiler_ets_runtime/issues/I6T69B Signed-off-by: K0u1hw <wangchunyang15@huawei.com> Change-Id: Id04eb0949d2d8400219b6c6ad5d6b6e23a40730a
104 lines
3.3 KiB
C++
104 lines
3.3 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_EARLY_ELIMINATION_H
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#define ECMASCRIPT_COMPILER_EARLY_ELIMINATION_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 EarlyElimination;
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class DependInfoNode : public ChunkObject {
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public:
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DependInfoNode(Chunk* chunk) : chunk_(chunk) {}
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~DependInfoNode() = default;
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GateRef LookupFrameState() const;
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GateRef LookupNode(EarlyElimination* elimination, GateRef gate);
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DependInfoNode* UpdateNode(GateRef gate);
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DependInfoNode* UpdateFrameState(GateRef framestate);
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DependInfoNode* UpdateStoreProperty(EarlyElimination* elimination, GateRef gate);
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bool Equals(DependInfoNode* that);
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void Merge(EarlyElimination* elimination, DependInfoNode* that);
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void CopyFrom(DependInfoNode *other)
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{
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head_ = other->head_;
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size_ = other->size_;
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}
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private:
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struct Node {
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Node(GateRef gate, Node* next) : gate(gate), next(next) {}
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GateRef gate;
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Node *next;
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};
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GateRef frameState_ {Circuit::NullGate()};
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Node *head_{nullptr};
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size_t size_ {0};
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Chunk* chunk_;
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};
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class EarlyElimination : public GraphVisitor {
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public:
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EarlyElimination(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), dependChains_(chunk) {}
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~EarlyElimination() = 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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bool MayAccessOneMemory(GateRef lhs, GateRef rhs);
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bool CompareOrder(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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DependInfoNode* GetDependChain(GateRef dependIn)
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{
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size_t idx = acc_.GetId(dependIn);
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ASSERT(idx <= circuit_->GetMaxGateId());
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return dependChains_[idx];
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}
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GateRef VisitDependEntry(GateRef gate);
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GateRef UpdateDependChain(GateRef gate, DependInfoNode* dependInfo);
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DependInfoNode* UpdateWrite(GateRef gate, DependInfoNode* dependInfo);
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GateRef TryEliminateGate(GateRef gate);
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GateRef TryEliminateFrameState(GateRef gate);
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GateRef TryEliminateOther(GateRef gate);
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GateRef TryEliminateDependSelector(GateRef gate);
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DependInfoNode* GetLoopDependInfo(GateRef depend);
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bool enableLog_ {false};
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std::string methodName_;
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ChunkVector<DependInfoNode*> dependChains_;
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};
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} // panda::ecmascript::kungfu
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#endif // ECMASCRIPT_COMPILER_EARLY_ELIMINATION_H
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