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/*
* Copyright (C) 2015 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 "code_generator.h"
#include "instruction_simplifier_arm.h"
#include "instruction_simplifier_shared.h"
#include "mirror/array-inl.h"
namespace art {
namespace arm {
void InstructionSimplifierArmVisitor::VisitMul(HMul* instruction) {
if (TryCombineMultiplyAccumulate(instruction, kArm)) {
RecordSimplification();
}
}
void InstructionSimplifierArmVisitor::VisitOr(HOr* instruction) {
if (TryMergeNegatedInput(instruction)) {
RecordSimplification();
}
}
void InstructionSimplifierArmVisitor::VisitAnd(HAnd* instruction) {
if (TryMergeNegatedInput(instruction)) {
RecordSimplification();
}
}
void InstructionSimplifierArmVisitor::VisitArrayGet(HArrayGet* instruction) {
size_t data_offset = CodeGenerator::GetArrayDataOffset(instruction);
Primitive::Type type = instruction->GetType();
// TODO: Implement reading (length + compression) for String compression feature from
// negative offset (count_offset - data_offset). Thumb2Assembler does not support T4
// encoding of "LDR (immediate)" at the moment.
// Don't move array pointer if it is charAt because we need to take the count first.
if (mirror::kUseStringCompression && instruction->IsStringCharAt()) {
return;
}
if (type == Primitive::kPrimLong
|| type == Primitive::kPrimFloat
|| type == Primitive::kPrimDouble) {
// T32 doesn't support ShiftedRegOffset mem address mode for these types
// to enable optimization.
return;
}
if (TryExtractArrayAccessAddress(instruction,
instruction->GetArray(),
instruction->GetIndex(),
data_offset)) {
RecordSimplification();
}
}
void InstructionSimplifierArmVisitor::VisitArraySet(HArraySet* instruction) {
size_t access_size = Primitive::ComponentSize(instruction->GetComponentType());
size_t data_offset = mirror::Array::DataOffset(access_size).Uint32Value();
Primitive::Type type = instruction->GetComponentType();
if (type == Primitive::kPrimLong
|| type == Primitive::kPrimFloat
|| type == Primitive::kPrimDouble) {
// T32 doesn't support ShiftedRegOffset mem address mode for these types
// to enable optimization.
return;
}
if (TryExtractArrayAccessAddress(instruction,
instruction->GetArray(),
instruction->GetIndex(),
data_offset)) {
RecordSimplification();
}
}
} // namespace arm
} // namespace art
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