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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "locations.h"
#include <type_traits>
#include "code_generator.h"
#include "nodes.h"
namespace art HIDDEN {
// Verify that Location is trivially copyable.
static_assert(std::is_trivially_copyable<Location>::value, "Location should be trivially copyable");
LocationSummary::LocationSummary(HInstruction* instruction,
CallKind call_kind,
bool intrinsified,
ArenaAllocator* allocator)
: inputs_(instruction->InputCount(), allocator->Adapter(kArenaAllocLocationSummary)),
temps_(allocator->Adapter(kArenaAllocLocationSummary)),
call_kind_(call_kind),
intrinsified_(intrinsified),
has_custom_slow_path_calling_convention_(false),
output_overlaps_(Location::kOutputOverlap),
stack_mask_(nullptr),
register_mask_(0),
live_registers_(RegisterSet::Empty()),
custom_slow_path_caller_saves_(RegisterSet::Empty()) {
instruction->SetLocations(this);
if (NeedsSafepoint()) {
stack_mask_ = ArenaBitVector::Create(allocator, 0, true, kArenaAllocLocationSummary);
}
}
LocationSummary::LocationSummary(HInstruction* instruction,
CallKind call_kind,
bool intrinsified)
: LocationSummary(instruction,
call_kind,
intrinsified,
instruction->GetBlock()->GetGraph()->GetAllocator()) {}
Location Location::RegisterOrConstant(HInstruction* instruction) {
return instruction->IsConstant()
? Location::ConstantLocation(instruction)
: Location::RequiresRegister();
}
Location Location::RegisterOrInt32Constant(HInstruction* instruction) {
HConstant* constant = instruction->AsConstant();
if (constant != nullptr) {
int64_t value = CodeGenerator::GetInt64ValueOf(constant);
if (IsInt<32>(value)) {
return Location::ConstantLocation(constant);
}
}
return Location::RequiresRegister();
}
Location Location::FpuRegisterOrInt32Constant(HInstruction* instruction) {
HConstant* constant = instruction->AsConstant();
if (constant != nullptr) {
int64_t value = CodeGenerator::GetInt64ValueOf(constant);
if (IsInt<32>(value)) {
return Location::ConstantLocation(constant);
}
}
return Location::RequiresFpuRegister();
}
Location Location::ByteRegisterOrConstant(int reg, HInstruction* instruction) {
return instruction->IsConstant()
? Location::ConstantLocation(instruction)
: Location::RegisterLocation(reg);
}
Location Location::FpuRegisterOrConstant(HInstruction* instruction) {
return instruction->IsConstant()
? Location::ConstantLocation(instruction)
: Location::RequiresFpuRegister();
}
void Location::DCheckInstructionIsConstant(HInstruction* instruction) {
DCHECK(instruction != nullptr);
DCHECK(instruction->IsConstant());
DCHECK_EQ(reinterpret_cast<uintptr_t>(instruction),
reinterpret_cast<uintptr_t>(instruction->AsConstant()));
}
std::ostream& operator<<(std::ostream& os, const Location& location) {
os << location.DebugString();
if (location.IsRegister() || location.IsFpuRegister()) {
os << location.reg();
} else if (location.IsPair()) {
os << location.low() << ":" << location.high();
} else if (location.IsStackSlot() || location.IsDoubleStackSlot()) {
os << location.GetStackIndex();
}
return os;
}
} // namespace art
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