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https://gitee.com/openharmony/arkcompiler_ets_runtime
synced 2024-10-07 16:13:49 +00:00
9d15de8852
Issue: https://gitee.com/openharmony/arkcompiler_ets_runtime/issues/I9KXK4 Signed-off-by: dingding <dingding5@huawei.com> Change-Id: I4bfa2df0ca295fea3594639483d271a746c82153
603 lines
19 KiB
C++
603 lines
19 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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#include "ecmascript/compiler/early_elimination.h"
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namespace panda::ecmascript::kungfu {
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void EarlyElimination::Initialize()
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{
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dependChains_.resize(circuit_->GetMaxGateId() + 1, nullptr); // 1: +1 for size
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renames_.resize(circuit_->GetMaxGateId() + 1, Circuit::NullGate()); // 1: +1 for size
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GateRef entry = acc_.GetDependRoot();
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VisitDependEntry(entry);
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}
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DependInfoNode* EarlyElimination::GetLoopDependInfo(GateRef depend)
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{
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auto depIn = acc_.GetDep(depend);
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auto dependChain = GetDependChain(depIn);
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if (dependChain == nullptr) {
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return nullptr;
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}
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auto newChain = new (chunk_) DependInfoNode(chunk_);
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newChain->CopyFrom(dependChain);
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ChunkSet<GateRef> visited(chunk_);
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ChunkQueue<GateRef> workList(chunk_);
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workList.push(depend);
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visited.insert(acc_.GetDep(depend));
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while (!workList.empty()) {
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auto curDep = workList.front();
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workList.pop();
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if (visited.count(curDep)) {
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continue;
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}
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if (!acc_.IsNotWrite(curDep)) {
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newChain = UpdateWrite(curDep, newChain);
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}
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visited.insert(curDep);
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auto depCount = acc_.GetDependCount(curDep);
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for (size_t i = 0; i < depCount; ++i) {
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workList.push(acc_.GetDep(curDep, i));
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}
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}
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return newChain;
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}
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GateRef EarlyElimination::VisitDependEntry(GateRef gate)
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{
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auto empty = new (chunk_) DependInfoNode(chunk_);
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return UpdateDependChain(gate, empty);
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}
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GateRef EarlyElimination::VisitGate(GateRef gate)
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{
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auto opcode = acc_.GetOpCode(gate);
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switch (opcode) {
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case OpCode::LOAD_PROPERTY:
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case OpCode::LOAD_ELEMENT:
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case OpCode::LOAD_ARRAY_LENGTH:
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case OpCode::LOAD_TYPED_ARRAY_LENGTH:
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case OpCode::TYPED_ARRAY_CHECK:
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case OpCode::OBJECT_TYPE_CHECK:
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case OpCode::STABLE_ARRAY_CHECK:
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case OpCode::INDEX_CHECK:
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case OpCode::ELEMENTSKIND_CHECK:
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case OpCode::TYPED_CALL_CHECK:
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case OpCode::LOAD_CONST_OFFSET:
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case OpCode::LOAD_HCLASS_FROM_CONSTPOOL:
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case OpCode::TYPED_BINARY_OP:
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case OpCode::TYPED_UNARY_OP:
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case OpCode::JSINLINETARGET_TYPE_CHECK:
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case OpCode::PROTOTYPE_CHECK:
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case OpCode::LOAD_GETTER:
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case OpCode::LOAD_SETTER:
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case OpCode::ECMA_STRING_CHECK:
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case OpCode::BUILTIN_PROTOTYPE_HCLASS_CHECK:
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case OpCode::TYPE_OF_CHECK:
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case OpCode::ARRAY_CONSTRUCTOR_CHECK:
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case OpCode::OBJECT_CONSTRUCTOR_CHECK:
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case OpCode::BOOLEAN_CONSTRUCTOR_CHECK:
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case OpCode::PROTO_CHANGE_MARKER_CHECK:
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case OpCode::MONO_LOAD_PROPERTY_ON_PROTO:
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case OpCode::LOAD_BUILTIN_OBJECT:
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case OpCode::LOOK_UP_HOLDER:
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return TryEliminateGate(gate);
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case OpCode::STATE_SPLIT:
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return TryEliminateFrameState(gate);
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case OpCode::DEPEND_SELECTOR:
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return TryEliminateDependSelector(gate);
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default:
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if (acc_.GetDependCount(gate) == 1) { // 1: depend in is 1
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return TryEliminateOther(gate);
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}
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}
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return Circuit::NullGate();
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}
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GateRef EarlyElimination::TryEliminateOther(GateRef gate)
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{
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ASSERT(acc_.GetDependCount(gate) >= 1);
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auto depIn = acc_.GetDep(gate);
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auto dependChain = GetDependChain(depIn);
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if (dependChain == nullptr) {
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return Circuit::NullGate();
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}
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if (!acc_.IsNotWrite(gate)) {
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dependChain = UpdateWrite(gate, dependChain);
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}
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return UpdateDependChain(gate, dependChain);
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}
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GateRef EarlyElimination::TryEliminateGate(GateRef gate)
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{
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ASSERT(acc_.GetDependCount(gate) == 1);
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auto depIn = acc_.GetDep(gate);
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auto dependChain = GetDependChain(depIn);
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// dependChain is null
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if (dependChain == nullptr) {
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return Circuit::NullGate();
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}
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if (!acc_.IsNotWrite(gate)) {
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dependChain = UpdateWrite(gate, dependChain);
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return UpdateDependChain(gate, dependChain);
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}
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auto numIns = acc_.GetNumValueIn(gate);
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for (size_t i = 0; i < numIns; ++i) {
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auto origin = acc_.GetValueIn(gate, i);
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auto checkd = dependChain->LookupCheckedNode(this, origin);
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if (origin != checkd) {
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acc_.ReplaceValueIn(gate, checkd, i);
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}
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}
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// lookup gate, replace
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auto preGate = dependChain->LookupNode(this, gate);
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if (preGate != Circuit::NullGate()) {
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return preGate;
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}
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// update gate, for others elimination
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dependChain = dependChain->UpdateNode(gate);
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return UpdateDependChain(gate, dependChain);
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}
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GateRef EarlyElimination::TryEliminateFrameState(GateRef gate)
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{
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ASSERT(acc_.GetOpCode(gate) == OpCode::STATE_SPLIT);
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auto depIn = acc_.GetDep(gate);
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auto dependChain = GetDependChain(depIn);
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// dependChain is null
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if (dependChain == nullptr) {
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return Circuit::NullGate();
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}
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// lookup gate, replace
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auto preFrame = dependChain->LookupFrameState();
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auto curFrame = acc_.GetFrameState(gate);
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if ((preFrame != Circuit::NullGate()) && (preFrame != curFrame) &&
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acc_.GetFrameState(preFrame) == acc_.GetFrameState(curFrame)) {
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acc_.UpdateAllUses(curFrame, preFrame);
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auto frameValues = acc_.GetValueIn(curFrame, 1); // 1: frameValues
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acc_.DeleteGate(frameValues);
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acc_.DeleteGate(curFrame);
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return depIn;
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} else {
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dependChain = dependChain->UpdateFrameState(curFrame);
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}
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// update gate, for others elimination
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return UpdateDependChain(gate, dependChain);
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}
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GateRef EarlyElimination::TryEliminateDependSelector(GateRef gate)
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{
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auto state = acc_.GetState(gate);
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if (acc_.IsLoopHead(state)) {
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auto dependChain = GetLoopDependInfo(gate);
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if (dependChain == nullptr) {
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return Circuit::NullGate();
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}
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return UpdateDependChain(gate, dependChain);
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}
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auto dependCount = acc_.GetDependCount(gate);
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for (size_t i = 0; i < dependCount; ++i) {
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auto depend = acc_.GetDep(gate, i);
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auto dependChain = GetDependChain(depend);
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if (dependChain == nullptr) {
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return Circuit::NullGate();
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}
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}
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// all depend done.
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auto depend = acc_.GetDep(gate);
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auto dependChain = GetDependChain(depend);
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DependInfoNode* copy = new (chunk_) DependInfoNode(chunk_);
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copy->CopyFrom(dependChain);
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for (size_t i = 1; i < dependCount; ++i) { // 1: second in
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auto dependIn = acc_.GetDep(gate, i);
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auto tempChain = GetDependChain(dependIn);
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copy->Merge(this, tempChain);
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}
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return UpdateDependChain(gate, copy);
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}
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GateRef EarlyElimination::UpdateDependChain(GateRef gate, DependInfoNode* dependChain)
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{
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ASSERT(dependChain != nullptr);
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auto oldDependChain = GetDependChain(gate);
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if (dependChain->Equals(oldDependChain)) {
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return Circuit::NullGate();
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}
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dependChains_[acc_.GetId(gate)] = dependChain;
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return gate;
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}
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DependInfoNode* EarlyElimination::UpdateWrite(GateRef gate, DependInfoNode* dependInfo)
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{
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if (!enableMemoryAnalysis_) {
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return new (chunk_) DependInfoNode(chunk_);
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}
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auto op = acc_.GetOpCode(gate);
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switch (op) {
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case OpCode::STORE_PROPERTY:
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case OpCode::STORE_PROPERTY_NO_BARRIER:
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case OpCode::STORE_CONST_OFFSET:
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case OpCode::STORE_ELEMENT:
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case OpCode::STORE_MEMORY:
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case OpCode::MIGRATE_ARRAY_WITH_KIND:
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case OpCode::MONO_STORE_PROPERTY_LOOK_UP_PROTO:
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case OpCode::MONO_STORE_PROPERTY:
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return dependInfo->UpdateStoreProperty(this, gate);
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default:
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return new (chunk_) DependInfoNode(chunk_);
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}
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}
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bool EarlyElimination::MayAccessOneMemory(GateRef lhs, GateRef rhs)
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{
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auto rop = acc_.GetOpCode(rhs);
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auto lop = acc_.GetOpCode(lhs);
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switch (rop) {
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case OpCode::STORE_MEMORY:
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ASSERT(acc_.GetMemoryType(rhs) == MemoryType::ELEMENT_TYPE);
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return acc_.GetOpCode(lhs) == OpCode::LOAD_ELEMENT;
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case OpCode::MIGRATE_ARRAY_WITH_KIND: {
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if (lop == OpCode::LOAD_ELEMENT) {
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GateRef lopValueIn = acc_.GetValueIn(lhs, 0); // loadelement receiver
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GateRef ropValueIn = acc_.GetValueIn(rhs, 0); // migrate receiver
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return lopValueIn == ropValueIn;
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}
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return false;
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}
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case OpCode::STORE_ELEMENT: {
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if (lop == OpCode::LOAD_ELEMENT) {
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bool lopIsTypedArray = acc_.TypedOpIsTypedArray(lhs, TypedOpKind::TYPED_LOAD_OP);
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bool ropIsTypedArray = acc_.TypedOpIsTypedArray(rhs, TypedOpKind::TYPED_STORE_OP);
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return lopIsTypedArray == ropIsTypedArray;
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}
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return false;
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}
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case OpCode::STORE_PROPERTY:
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case OpCode::STORE_PROPERTY_NO_BARRIER: {
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if (lop == OpCode::LOAD_PROPERTY) {
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auto loff = acc_.GetValueIn(lhs, 1);
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auto roff = acc_.GetValueIn(rhs, 1);
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ASSERT(acc_.GetOpCode(loff) == OpCode::CONSTANT);
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ASSERT(acc_.GetOpCode(roff) == OpCode::CONSTANT);
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return loff == roff;
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} else if (lop == OpCode::PROTOTYPE_CHECK) {
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auto lindex = acc_.GetHClassIndex(lhs);
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auto rindex = acc_.GetHClassIndex(rhs);
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return (lindex == 0) || (rindex == 0) || (lindex != rindex);
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}
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break;
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}
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case OpCode::STORE_CONST_OFFSET: {
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if (lop == OpCode::LOAD_CONST_OFFSET) {
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auto loff = acc_.GetOffset(lhs);
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auto roff = acc_.GetOffset(rhs);
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return loff == roff;
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}
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break;
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}
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case OpCode::LOAD_PROPERTY:
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case OpCode::MONO_LOAD_PROPERTY_ON_PROTO:
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if (acc_.GetGateType(lhs).Value() != acc_.GetGateType(rhs).Value()) {
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return false;
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}
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break;
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default:
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break;
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}
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return false;
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}
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bool EarlyElimination::CompareOrder(GateRef lhs, GateRef rhs)
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{
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return visitor_->GetGateOrder(lhs) < visitor_->GetGateOrder(rhs);
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}
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bool EarlyElimination::CheckReplacement(GateRef lhs, GateRef rhs)
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{
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if (!acc_.MetaDataEqu(lhs, rhs)) {
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if (acc_.GetOpCode(lhs) != acc_.GetOpCode(rhs)) {
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return false;
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}
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}
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size_t valueCount = acc_.GetNumValueIn(lhs);
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for (size_t i = 0; i < valueCount; i++) {
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if (Rename(acc_.GetValueIn(lhs, i)) != Rename(acc_.GetValueIn(rhs, i))) {
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return false;
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}
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}
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auto opcode = acc_.GetOpCode(lhs);
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switch (opcode) {
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case OpCode::LOAD_ELEMENT: {
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if (acc_.GetTypedLoadOp(lhs) != acc_.GetTypedLoadOp(rhs)) {
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return false;
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}
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break;
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}
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case OpCode::TYPED_BINARY_OP: {
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auto lhsOp = acc_.GetTypedBinaryOp(lhs);
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auto rhsOp = acc_.GetTypedBinaryOp(rhs);
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if (lhsOp != rhsOp) {
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return false;
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}
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break;
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}
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case OpCode::TYPED_UNARY_OP: {
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auto lhsOp = acc_.GetTypedUnAccessor(lhs).GetTypedUnOp();
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auto rhsOp = acc_.GetTypedUnAccessor(rhs).GetTypedUnOp();
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if (lhsOp != rhsOp) {
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return false;
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}
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break;
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}
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case OpCode::TYPED_ARRAY_CHECK: {
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TypedArrayMetaDateAccessor lhsAccessor = acc_.GetTypedArrayMetaDateAccessor(lhs);
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TypedArrayMetaDateAccessor rhsAccessor = acc_.GetTypedArrayMetaDateAccessor(rhs);
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if ((lhsAccessor.GetParamType() != rhsAccessor.GetParamType()) ||
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(lhsAccessor.GetOnHeapMode() != rhsAccessor.GetOnHeapMode())) {
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return false;
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}
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break;
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}
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case OpCode::TYPE_OF_CHECK: {
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if (acc_.GetParamType(lhs) != acc_.GetParamType(rhs)) {
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return false;
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}
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break;
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}
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case OpCode::PROTOTYPE_CHECK: {
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if (acc_.GetHClassIndex(lhs) != acc_.GetHClassIndex(rhs)) {
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return false;
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}
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break;
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}
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case OpCode::LOAD_CONST_OFFSET: {
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if (acc_.GetOffset(lhs) != acc_.GetOffset(rhs)) {
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return false;
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}
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if (acc_.GetMachineType(lhs) != acc_.GetMachineType(rhs)) {
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return false;
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}
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if (acc_.GetMemoryOrder(lhs).Value() != acc_.GetMemoryOrder(rhs).Value()) {
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return false;
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}
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break;
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}
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case OpCode::LOAD_HCLASS_FROM_CONSTPOOL: {
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if (acc_.GetIndex(lhs) != acc_.GetIndex(rhs)) {
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return false;
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}
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break;
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}
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case OpCode::JSINLINETARGET_TYPE_CHECK: {
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if (acc_.GetFuncGT(lhs) != acc_.GetFuncGT(rhs)) {
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return false;
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}
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break;
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}
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case OpCode::ARRAY_CONSTRUCTOR_CHECK:
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case OpCode::OBJECT_CONSTRUCTOR_CHECK:
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case OpCode::BOOLEAN_CONSTRUCTOR_CHECK: {
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if (acc_.GetValueIn(lhs) != acc_.GetValueIn(rhs)) {
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return false;
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}
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break;
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}
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case OpCode::LOAD_BUILTIN_OBJECT: {
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if (acc_.GetIndex(lhs) != acc_.GetIndex(rhs)) {
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return false;
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}
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break;
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}
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default:
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break;
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}
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return true;
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}
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bool EarlyElimination::CheckRenameReplacement(GateRef lhs, GateRef rhs)
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{
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auto opcode = acc_.GetOpCode(lhs);
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switch (opcode) {
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case OpCode::INDEX_CHECK: {
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auto index = acc_.GetValueIn(lhs, 1);
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if (Rename(index) == Rename(rhs)) {
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return true;
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}
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break;
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}
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default:
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break;
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}
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return false;
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}
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GateRef EarlyElimination::Rename(GateRef gate)
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{
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ChunkStack<GateRef> gateStack(chunk_);
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while (true) {
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auto op = acc_.GetOpCode(gate);
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bool renamed = false;
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switch (op) {
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case OpCode::INDEX_CHECK: {
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GateRef ans = renames_[acc_.GetId(gate)];
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if (ans == Circuit::NullGate()) {
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renamed = true;
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gateStack.push(gate);
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gate = acc_.GetValueIn(gate, 1);
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} else {
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gate = ans;
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}
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break;
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}
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default:
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break;
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}
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if (!renamed) {
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break;
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}
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}
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while (!gateStack.empty()) {
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auto topGate = gateStack.top();
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gateStack.pop();
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renames_[acc_.GetId(topGate)] = gate;
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}
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return gate;
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}
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void DependInfoNode::Merge(EarlyElimination* elimination, DependInfoNode* that)
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{
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auto siz = this->size_; // size of lhs-chain
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auto lhs = this->head_;
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auto rhs = that->head_;
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ChunkStack<GateRef> gateStack(chunk_);
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while (lhs != rhs) {
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if (lhs == nullptr || rhs == nullptr) {
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siz = 0;
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lhs = nullptr;
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break;
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} else if (lhs->gate == rhs->gate) {
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gateStack.push(lhs->gate);
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siz--;
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lhs = lhs->next;
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rhs = rhs->next;
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} else if (elimination->CompareOrder(lhs->gate, rhs->gate)) {
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rhs = rhs->next;
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} else {
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siz--;
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lhs = lhs->next;
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}
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}
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// lhs : common suffix of lhs-chain and rhs-chain
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this->head_ = lhs;
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this->size_ = siz;
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while (!gateStack.empty()) {
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Node* node = chunk_->New<Node>(gateStack.top(), head_);
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gateStack.pop();
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this->size_++;
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this->head_ = node;
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}
|
|
if (this->frameState_ != that->frameState_) {
|
|
this->frameState_ = Circuit::NullGate();
|
|
}
|
|
}
|
|
|
|
bool DependInfoNode::Equals(DependInfoNode* that)
|
|
{
|
|
if (that == nullptr) {
|
|
return false;
|
|
}
|
|
if (size_ != that->size_ || frameState_ != that->frameState_) {
|
|
return false;
|
|
}
|
|
auto lhs = this->head_;
|
|
auto rhs = that->head_;
|
|
while (lhs != rhs) {
|
|
if (lhs->gate != rhs->gate) {
|
|
return false;
|
|
}
|
|
lhs = lhs->next;
|
|
rhs = rhs->next;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
GateRef DependInfoNode::LookupFrameState() const
|
|
{
|
|
return frameState_;
|
|
}
|
|
|
|
GateRef DependInfoNode::LookupCheckedNode(EarlyElimination* elimination, GateRef gate)
|
|
{
|
|
for (Node* node = head_; node != nullptr; node = node->next) {
|
|
if (elimination->CheckRenameReplacement(node->gate, gate)) {
|
|
return node->gate;
|
|
}
|
|
}
|
|
return gate;
|
|
}
|
|
|
|
void DependInfoNode::GetGates(std::vector<GateRef>& gates) const
|
|
{
|
|
ChunkStack<GateRef> st(chunk_);
|
|
for (Node* node = head_; node != nullptr; node = node->next) {
|
|
st.push(node->gate);
|
|
}
|
|
while (!st.empty()) {
|
|
gates.emplace_back(st.top());
|
|
st.pop();
|
|
}
|
|
}
|
|
|
|
GateRef DependInfoNode::LookupNode(EarlyElimination* elimination, GateRef gate)
|
|
{
|
|
for (Node* node = head_; node != nullptr; node = node->next) {
|
|
if (elimination->CheckReplacement(node->gate, gate)) {
|
|
return node->gate;
|
|
}
|
|
}
|
|
return Circuit::NullGate();
|
|
}
|
|
|
|
DependInfoNode* DependInfoNode::UpdateNode(GateRef gate)
|
|
{
|
|
// assign node->next to head
|
|
Node* node = chunk_->New<Node>(gate, head_);
|
|
DependInfoNode* that = new (chunk_) DependInfoNode(chunk_);
|
|
// assign head to node
|
|
that->head_ = node;
|
|
that->size_ = size_ + 1;
|
|
that->frameState_ = frameState_;
|
|
return that;
|
|
}
|
|
|
|
DependInfoNode* DependInfoNode::UpdateFrameState(GateRef framestate)
|
|
{
|
|
// assign node->next to head
|
|
DependInfoNode* that = new (chunk_) DependInfoNode(chunk_);
|
|
// assign head to node
|
|
that->head_ = head_;
|
|
that->size_ = size_;
|
|
that->frameState_ = framestate;
|
|
return that;
|
|
}
|
|
|
|
DependInfoNode* DependInfoNode::UpdateStoreProperty(EarlyElimination* elimination, GateRef gate)
|
|
{
|
|
DependInfoNode* that = new (chunk_) DependInfoNode(chunk_);
|
|
ChunkStack<GateRef> gateStack(chunk_);
|
|
for (Node* node = head_; node != nullptr; node = node->next) {
|
|
if (!elimination->MayAccessOneMemory(node->gate, gate)) {
|
|
gateStack.push(node->gate);
|
|
}
|
|
}
|
|
while (!gateStack.empty()) {
|
|
that = that->UpdateNode(gateStack.top());
|
|
gateStack.pop();
|
|
}
|
|
return that;
|
|
}
|
|
} // namespace panda::ecmascript::kungfu
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