mirror of
https://gitee.com/openharmony/arkcompiler_runtime_core
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c658ccf319
Issue: https://gitee.com/openharmony/arkcompiler_runtime_core/issues/I5G96F Test: Test262 suit, ark unittest, rk3568 XTS, ark previewer demo Signed-off-by: huangyu <huangyu76@huawei.com> Change-Id: I3f63d129a07deaa27a390f556dcaa5651c098185
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
/**
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* Copyright (c) 2021-2022 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 "check_resolver.h"
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#include "compiler/optimizer/ir/basicblock.h"
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#include "compiler/optimizer/ir/inst.h"
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namespace panda::bytecodeopt {
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bool CheckResolver::RunImpl()
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{
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bool applied = false;
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for (auto bb : GetGraph()->GetBlocksRPO()) {
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for (auto inst : bb->Insts()) {
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auto op = inst->GetOpcode();
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// replace check
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if (IsCheck(inst)) {
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size_t i = (op == compiler::Opcode::BoundsCheck || op == compiler::Opcode::RefTypeCheck) ? 1 : 0;
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auto input = inst->GetInput(i).GetInst();
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inst->ReplaceUsers(input);
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inst->ClearFlag(compiler::inst_flags::NO_DCE); // DCE will remove the check inst
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applied = true;
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}
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// set NO_DCE for Div, Mod, LoadArray, LoadStatic and LoadObject
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if (NeedSetNoDCE(inst)) {
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inst->SetFlag(compiler::inst_flags::NO_DCE);
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applied = true;
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}
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// mark LenArray whose users are not all check as no_dce
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// mark LenArray as no_hoist in all cases
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if (inst->GetOpcode() == compiler::Opcode::LenArray) {
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bool no_dce = !inst->HasUsers();
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for (const auto &usr : inst->GetUsers()) {
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if (!IsCheck(usr.GetInst())) {
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no_dce = true;
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break;
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}
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}
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if (no_dce) {
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inst->SetFlag(compiler::inst_flags::NO_DCE);
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}
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inst->SetFlag(compiler::inst_flags::NO_HOIST);
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}
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}
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}
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return applied;
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}
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bool CheckResolver::NeedSetNoDCE(const compiler::Inst *inst)
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{
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switch (inst->GetOpcode()) {
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case compiler::Opcode::Div:
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case compiler::Opcode::Mod:
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case compiler::Opcode::LoadArray:
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case compiler::Opcode::LoadStatic:
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case compiler::Opcode::LoadObject:
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return true;
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default:
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return false;
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}
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}
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bool CheckResolver::IsCheck(const compiler::Inst *inst)
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{
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switch (inst->GetOpcode()) {
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case compiler::Opcode::BoundsCheck:
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case compiler::Opcode::NullCheck:
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case compiler::Opcode::NegativeCheck:
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case compiler::Opcode::ZeroCheck:
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case compiler::Opcode::RefTypeCheck:
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case compiler::Opcode::BoundsCheckI:
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return true;
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default:
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return false;
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}
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}
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} // namespace panda::bytecodeopt
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