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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_SHARED_H_
#define ART_COMPILER_OPTIMIZING_NODES_SHARED_H_
// This `#include` should never be used by compilation, as this file (`nodes_shared.h`) is included
// in `nodes.h`. However it helps editing tools (e.g. YouCompleteMe) by giving them better context
// (defining `HInstruction` and co).
#include "nodes.h"
namespace art {
class HMultiplyAccumulate FINAL : public HExpression<3> {
public:
HMultiplyAccumulate(Primitive::Type type,
InstructionKind op,
HInstruction* accumulator,
HInstruction* mul_left,
HInstruction* mul_right,
uint32_t dex_pc = kNoDexPc)
: HExpression(type, SideEffects::None(), dex_pc), op_kind_(op) {
SetRawInputAt(kInputAccumulatorIndex, accumulator);
SetRawInputAt(kInputMulLeftIndex, mul_left);
SetRawInputAt(kInputMulRightIndex, mul_right);
}
static constexpr int kInputAccumulatorIndex = 0;
static constexpr int kInputMulLeftIndex = 1;
static constexpr int kInputMulRightIndex = 2;
bool CanBeMoved() const OVERRIDE { return true; }
bool InstructionDataEquals(const HInstruction* other) const OVERRIDE {
return op_kind_ == other->AsMultiplyAccumulate()->op_kind_;
}
InstructionKind GetOpKind() const { return op_kind_; }
DECLARE_INSTRUCTION(MultiplyAccumulate);
private:
// Indicates if this is a MADD or MSUB.
const InstructionKind op_kind_;
DISALLOW_COPY_AND_ASSIGN(HMultiplyAccumulate);
};
class HBitwiseNegatedRight FINAL : public HBinaryOperation {
public:
HBitwiseNegatedRight(Primitive::Type result_type,
InstructionKind op,
HInstruction* left,
HInstruction* right,
uint32_t dex_pc = kNoDexPc)
: HBinaryOperation(result_type, left, right, SideEffects::None(), dex_pc),
op_kind_(op) {
DCHECK(op == HInstruction::kAnd || op == HInstruction::kOr || op == HInstruction::kXor) << op;
}
template <typename T, typename U>
auto Compute(T x, U y) const -> decltype(x & ~y) {
static_assert(std::is_same<decltype(x & ~y), decltype(x | ~y)>::value &&
std::is_same<decltype(x & ~y), decltype(x ^ ~y)>::value,
"Inconsistent negated bitwise types");
switch (op_kind_) {
case HInstruction::kAnd:
return x & ~y;
case HInstruction::kOr:
return x | ~y;
case HInstruction::kXor:
return x ^ ~y;
default:
LOG(FATAL) << "Unreachable";
UNREACHABLE();
}
}
HConstant* Evaluate(HIntConstant* x, HIntConstant* y) const OVERRIDE {
return GetBlock()->GetGraph()->GetIntConstant(
Compute(x->GetValue(), y->GetValue()), GetDexPc());
}
HConstant* Evaluate(HLongConstant* x, HLongConstant* y) const OVERRIDE {
return GetBlock()->GetGraph()->GetLongConstant(
Compute(x->GetValue(), y->GetValue()), GetDexPc());
}
HConstant* Evaluate(HFloatConstant* x ATTRIBUTE_UNUSED,
HFloatConstant* y ATTRIBUTE_UNUSED) const OVERRIDE {
LOG(FATAL) << DebugName() << " is not defined for float values";
UNREACHABLE();
}
HConstant* Evaluate(HDoubleConstant* x ATTRIBUTE_UNUSED,
HDoubleConstant* y ATTRIBUTE_UNUSED) const OVERRIDE {
LOG(FATAL) << DebugName() << " is not defined for double values";
UNREACHABLE();
}
InstructionKind GetOpKind() const { return op_kind_; }
DECLARE_INSTRUCTION(BitwiseNegatedRight);
private:
// Specifies the bitwise operation, which will be then negated.
const InstructionKind op_kind_;
DISALLOW_COPY_AND_ASSIGN(HBitwiseNegatedRight);
};
// 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.
// The result of this instruction is not a pointer in the sense of `Primitive::kPrimNot`. So we
// represent it by the type `Primitive::kPrimInt`.
class HIntermediateAddress FINAL : public HExpression<2> {
public:
HIntermediateAddress(HInstruction* base_address, HInstruction* offset, uint32_t dex_pc)
: HExpression(Primitive::kPrimInt, SideEffects::DependsOnGC(), dex_pc) {
DCHECK_EQ(Primitive::ComponentSize(Primitive::kPrimInt),
Primitive::ComponentSize(Primitive::kPrimNot))
<< "kPrimInt and kPrimNot have different sizes.";
SetRawInputAt(0, base_address);
SetRawInputAt(1, offset);
}
bool CanBeMoved() const OVERRIDE { return true; }
bool InstructionDataEquals(const HInstruction* other ATTRIBUTE_UNUSED) const OVERRIDE {
return true;
}
bool IsActualObject() const OVERRIDE { return false; }
HInstruction* GetBaseAddress() const { return InputAt(0); }
HInstruction* GetOffset() const { return InputAt(1); }
DECLARE_INSTRUCTION(IntermediateAddress);
private:
DISALLOW_COPY_AND_ASSIGN(HIntermediateAddress);
};
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_NODES_SHARED_H_
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