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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 HIDDEN {
class HMultiplyAccumulate final : public HExpression<3> {
public:
HMultiplyAccumulate(DataType::Type type,
InstructionKind op,
HInstruction* accumulator,
HInstruction* mul_left,
HInstruction* mul_right,
uint32_t dex_pc = kNoDexPc)
: HExpression(kMultiplyAccumulate, type, SideEffects::None(), dex_pc),
op_kind_(op) {
SetRawInputAt(kInputAccumulatorIndex, accumulator);
SetRawInputAt(kInputMulLeftIndex, mul_left);
SetRawInputAt(kInputMulRightIndex, mul_right);
}
bool IsClonable() const override { return true; }
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);
protected:
DEFAULT_COPY_CONSTRUCTOR(MultiplyAccumulate);
private:
// Indicates if this is a MADD or MSUB.
const InstructionKind op_kind_;
};
// This instruction computes part of the array access offset (data and index offset).
//
// For array accesses the element address has the following structure:
// Address = CONST_OFFSET + base_addr + index << ELEM_SHIFT. Taking into account LDR/STR addressing
// modes address part (CONST_OFFSET + index << ELEM_SHIFT) can be shared across array access with
// the same data type and index. For example, for the following loop 5 accesses can share address
// computation:
//
// void foo(int[] a, int[] b, int[] c) {
// for (i...) {
// a[i] = a[i] + 5;
// b[i] = b[i] + c[i];
// }
// }
//
// Note: as the instruction doesn't involve base array address into computations it has no side
// effects (in comparison of HIntermediateAddress).
class HIntermediateAddressIndex final : public HExpression<3> {
public:
HIntermediateAddressIndex(
HInstruction* index, HInstruction* offset, HInstruction* shift, uint32_t dex_pc)
: HExpression(kIntermediateAddressIndex,
DataType::Type::kInt32,
SideEffects::None(),
dex_pc) {
SetRawInputAt(0, index);
SetRawInputAt(1, offset);
SetRawInputAt(2, shift);
}
bool IsClonable() const override { return true; }
bool CanBeMoved() const override { return true; }
bool InstructionDataEquals([[maybe_unused]] const HInstruction* other) const override {
return true;
}
bool IsActualObject() const override { return false; }
HInstruction* GetIndex() const { return InputAt(0); }
HInstruction* GetOffset() const { return InputAt(1); }
HInstruction* GetShift() const { return InputAt(2); }
DECLARE_INSTRUCTION(IntermediateAddressIndex);
protected:
DEFAULT_COPY_CONSTRUCTOR(IntermediateAddressIndex);
};
class HDataProcWithShifterOp final : public HExpression<2> {
public:
enum OpKind {
kLSL, // Logical shift left.
kLSR, // Logical shift right.
kASR, // Arithmetic shift right.
kUXTB, // Unsigned extend byte.
kUXTH, // Unsigned extend half-word.
kUXTW, // Unsigned extend word.
kSXTB, // Signed extend byte.
kSXTH, // Signed extend half-word.
kSXTW, // Signed extend word.
// Aliases.
kFirstShiftOp = kLSL,
kLastShiftOp = kASR,
kFirstExtensionOp = kUXTB,
kLastExtensionOp = kSXTW
};
HDataProcWithShifterOp(HInstruction* instr,
HInstruction* left,
HInstruction* right,
OpKind op,
// The shift argument is unused if the operation
// is an extension.
int shift = 0,
uint32_t dex_pc = kNoDexPc)
: HExpression(kDataProcWithShifterOp, instr->GetType(), SideEffects::None(), dex_pc),
instr_kind_(instr->GetKind()), op_kind_(op),
shift_amount_(shift & (instr->GetType() == DataType::Type::kInt32
? kMaxIntShiftDistance
: kMaxLongShiftDistance)) {
DCHECK(!instr->HasSideEffects());
SetRawInputAt(0, left);
SetRawInputAt(1, right);
}
bool IsClonable() const override { return true; }
bool CanBeMoved() const override { return true; }
bool InstructionDataEquals(const HInstruction* other_instr) const override {
const HDataProcWithShifterOp* other = other_instr->AsDataProcWithShifterOp();
return instr_kind_ == other->instr_kind_ &&
op_kind_ == other->op_kind_ &&
shift_amount_ == other->shift_amount_;
}
static bool IsShiftOp(OpKind op_kind) {
return kFirstShiftOp <= op_kind && op_kind <= kLastShiftOp;
}
static bool IsExtensionOp(OpKind op_kind) {
return kFirstExtensionOp <= op_kind && op_kind <= kLastExtensionOp;
}
// Find the operation kind and shift amount from a bitfield move instruction.
static void GetOpInfoFromInstruction(HInstruction* bitfield_op,
/*out*/OpKind* op_kind,
/*out*/int* shift_amount);
InstructionKind GetInstrKind() const { return instr_kind_; }
OpKind GetOpKind() const { return op_kind_; }
int GetShiftAmount() const { return shift_amount_; }
DECLARE_INSTRUCTION(DataProcWithShifterOp);
protected:
DEFAULT_COPY_CONSTRUCTOR(DataProcWithShifterOp);
private:
InstructionKind instr_kind_;
OpKind op_kind_;
int shift_amount_;
friend std::ostream& operator<<(std::ostream& os, OpKind op);
};
std::ostream& operator<<(std::ostream& os, const HDataProcWithShifterOp::OpKind op);
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_NODES_SHARED_H_
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