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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 "nodes.h"
namespace art {
LocationSummary::LocationSummary(HInstruction* instruction,
CallKind call_kind,
bool intrinsified)
: inputs_(instruction->GetBlock()->GetGraph()->GetArena(), instruction->InputCount()),
temps_(instruction->GetBlock()->GetGraph()->GetArena(), 0),
output_overlaps_(Location::kOutputOverlap),
call_kind_(call_kind),
stack_mask_(nullptr),
register_mask_(0),
live_registers_(),
intrinsified_(intrinsified) {
inputs_.SetSize(instruction->InputCount());
for (size_t i = 0; i < instruction->InputCount(); ++i) {
inputs_.Put(i, Location());
}
instruction->SetLocations(this);
if (NeedsSafepoint()) {
ArenaAllocator* arena = instruction->GetBlock()->GetGraph()->GetArena();
stack_mask_ = new (arena) ArenaBitVector(arena, 0, true);
}
}
Location Location::RegisterOrConstant(HInstruction* instruction) {
return instruction->IsConstant()
? Location::ConstantLocation(instruction->AsConstant())
: Location::RequiresRegister();
}
Location Location::RegisterOrInt32LongConstant(HInstruction* instruction) {
if (!instruction->IsConstant() || !instruction->AsConstant()->IsLongConstant()) {
return Location::RequiresRegister();
}
// Does the long constant fit in a 32 bit int?
int64_t value = instruction->AsConstant()->AsLongConstant()->GetValue();
return IsInt<32>(value)
? Location::ConstantLocation(instruction->AsConstant())
: Location::RequiresRegister();
}
Location Location::ByteRegisterOrConstant(int reg, HInstruction* instruction) {
return instruction->IsConstant()
? Location::ConstantLocation(instruction->AsConstant())
: Location::RegisterLocation(reg);
}
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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