/*
|
* Copyright (C) 2016 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_MIPS_H_
|
#define ART_COMPILER_OPTIMIZING_NODES_MIPS_H_
|
|
namespace art {
|
|
// Compute the address of the method for MIPS Constant area support.
|
class HMipsComputeBaseMethodAddress : public HExpression<0> {
|
public:
|
// Treat the value as an int32_t, but it is really a 32 bit native pointer.
|
HMipsComputeBaseMethodAddress()
|
: HExpression(kMipsComputeBaseMethodAddress,
|
DataType::Type::kInt32,
|
SideEffects::None(),
|
kNoDexPc) {
|
}
|
|
bool CanBeMoved() const override { return true; }
|
|
DECLARE_INSTRUCTION(MipsComputeBaseMethodAddress);
|
|
protected:
|
DEFAULT_COPY_CONSTRUCTOR(MipsComputeBaseMethodAddress);
|
};
|
|
// Mips version of HPackedSwitch that holds a pointer to the base method address.
|
class HMipsPackedSwitch final : public HExpression<2> {
|
public:
|
HMipsPackedSwitch(int32_t start_value,
|
int32_t num_entries,
|
HInstruction* input,
|
HMipsComputeBaseMethodAddress* method_base,
|
uint32_t dex_pc)
|
: HExpression(kMipsPackedSwitch, SideEffects::None(), dex_pc),
|
start_value_(start_value),
|
num_entries_(num_entries) {
|
SetRawInputAt(0, input);
|
SetRawInputAt(1, method_base);
|
}
|
|
bool IsControlFlow() const override { return true; }
|
|
int32_t GetStartValue() const { return start_value_; }
|
|
int32_t GetNumEntries() const { return num_entries_; }
|
|
HBasicBlock* GetDefaultBlock() const {
|
// Last entry is the default block.
|
return GetBlock()->GetSuccessors()[num_entries_];
|
}
|
|
DECLARE_INSTRUCTION(MipsPackedSwitch);
|
|
protected:
|
DEFAULT_COPY_CONSTRUCTOR(MipsPackedSwitch);
|
|
private:
|
const int32_t start_value_;
|
const int32_t num_entries_;
|
};
|
|
// This instruction computes part of the array access offset (index offset).
|
//
|
// For array accesses the element address has the following structure:
|
// Address = CONST_OFFSET + base_addr + index << ELEM_SHIFT. The address part
|
// (index << ELEM_SHIFT) can be shared across array accesses with
|
// the same data type and index. For example, in 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.
|
class HIntermediateArrayAddressIndex final : public HExpression<2> {
|
public:
|
HIntermediateArrayAddressIndex(HInstruction* index, HInstruction* shift, uint32_t dex_pc)
|
: HExpression(kIntermediateArrayAddressIndex,
|
DataType::Type::kInt32,
|
SideEffects::None(),
|
dex_pc) {
|
SetRawInputAt(0, index);
|
SetRawInputAt(1, shift);
|
}
|
|
bool CanBeMoved() const override { return true; }
|
bool InstructionDataEquals(const HInstruction* other ATTRIBUTE_UNUSED) const override {
|
return true;
|
}
|
bool IsActualObject() const override { return false; }
|
|
HInstruction* GetIndex() const { return InputAt(0); }
|
HInstruction* GetShift() const { return InputAt(1); }
|
|
DECLARE_INSTRUCTION(IntermediateArrayAddressIndex);
|
|
protected:
|
DEFAULT_COPY_CONSTRUCTOR(IntermediateArrayAddressIndex);
|
};
|
|
} // namespace art
|
|
#endif // ART_COMPILER_OPTIMIZING_NODES_MIPS_H_
|
