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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.
*/
#ifndef ART_COMPILER_OPTIMIZING_NODES_ARM64_H_
#define ART_COMPILER_OPTIMIZING_NODES_ARM64_H_
namespace art {
// This instruction computes an intermediate address pointing in the 'middle' of an object. The
// result pointer cannot be handled by GC, so extra care is taken to make sure that this value is
// never used across anything that can trigger GC.
class HArm64IntermediateAddress : public HExpression<2> {
public:
HArm64IntermediateAddress(HInstruction* base_address, HInstruction* offset, uint32_t dex_pc)
: HExpression(Primitive::kPrimNot, SideEffects::DependsOnGC(), dex_pc) {
SetRawInputAt(0, base_address);
SetRawInputAt(1, offset);
}
bool CanBeMoved() const OVERRIDE { return true; }
bool InstructionDataEquals(HInstruction* other ATTRIBUTE_UNUSED) const OVERRIDE { return true; }
HInstruction* GetBaseAddress() const { return InputAt(0); }
HInstruction* GetOffset() const { return InputAt(1); }
DECLARE_INSTRUCTION(Arm64IntermediateAddress);
private:
DISALLOW_COPY_AND_ASSIGN(HArm64IntermediateAddress);
};
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_NODES_ARM64_H_
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