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111 lines
3.8 KiB
111 lines
3.8 KiB
4 months ago
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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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 "locations.h"
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#include <type_traits>
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#include "code_generator.h"
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#include "nodes.h"
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namespace art {
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// Verify that Location is trivially copyable.
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static_assert(std::is_trivially_copyable<Location>::value, "Location should be trivially copyable");
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LocationSummary::LocationSummary(HInstruction* instruction,
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CallKind call_kind,
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bool intrinsified,
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ArenaAllocator* allocator)
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: inputs_(instruction->InputCount(), allocator->Adapter(kArenaAllocLocationSummary)),
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temps_(allocator->Adapter(kArenaAllocLocationSummary)),
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call_kind_(call_kind),
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intrinsified_(intrinsified),
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has_custom_slow_path_calling_convention_(false),
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output_overlaps_(Location::kOutputOverlap),
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stack_mask_(nullptr),
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register_mask_(0),
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live_registers_(RegisterSet::Empty()),
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custom_slow_path_caller_saves_(RegisterSet::Empty()) {
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instruction->SetLocations(this);
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if (NeedsSafepoint()) {
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stack_mask_ = ArenaBitVector::Create(allocator, 0, true, kArenaAllocLocationSummary);
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}
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}
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LocationSummary::LocationSummary(HInstruction* instruction,
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CallKind call_kind,
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bool intrinsified)
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: LocationSummary(instruction,
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call_kind,
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intrinsified,
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instruction->GetBlock()->GetGraph()->GetAllocator()) {}
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Location Location::RegisterOrConstant(HInstruction* instruction) {
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return instruction->IsConstant()
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? Location::ConstantLocation(instruction->AsConstant())
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: Location::RequiresRegister();
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}
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Location Location::RegisterOrInt32Constant(HInstruction* instruction) {
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HConstant* constant = instruction->AsConstant();
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if (constant != nullptr) {
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int64_t value = CodeGenerator::GetInt64ValueOf(constant);
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if (IsInt<32>(value)) {
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return Location::ConstantLocation(constant);
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}
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}
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return Location::RequiresRegister();
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}
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Location Location::FpuRegisterOrInt32Constant(HInstruction* instruction) {
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HConstant* constant = instruction->AsConstant();
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if (constant != nullptr) {
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int64_t value = CodeGenerator::GetInt64ValueOf(constant);
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if (IsInt<32>(value)) {
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return Location::ConstantLocation(constant);
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}
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}
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return Location::RequiresFpuRegister();
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}
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Location Location::ByteRegisterOrConstant(int reg, HInstruction* instruction) {
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return instruction->IsConstant()
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? Location::ConstantLocation(instruction->AsConstant())
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: Location::RegisterLocation(reg);
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}
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Location Location::FpuRegisterOrConstant(HInstruction* instruction) {
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return instruction->IsConstant()
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? Location::ConstantLocation(instruction->AsConstant())
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: Location::RequiresFpuRegister();
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}
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std::ostream& operator<<(std::ostream& os, const Location& location) {
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os << location.DebugString();
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if (location.IsRegister() || location.IsFpuRegister()) {
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os << location.reg();
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} else if (location.IsPair()) {
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os << location.low() << ":" << location.high();
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} else if (location.IsStackSlot() || location.IsDoubleStackSlot()) {
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os << location.GetStackIndex();
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}
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return os;
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}
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} // namespace art
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