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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_CODE_GENERATOR_UTILS_H_
#define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_UTILS_H_
#include <cstdint>
#include <cstdlib>
#include <limits>
namespace art {
class HInstruction;
// Computes the magic number and the shift needed in the div/rem by constant algorithm, as out
// arguments `magic` and `shift`
void CalculateMagicAndShiftForDivRem(int64_t divisor, bool is_long, int64_t* magic, int* shift);
// Returns true if `cond_input` is expected to have a location. Assumes that
// `cond_input` is a conditional input of the currently emitted instruction and
// that it has been previously visited by the InstructionCodeGenerator.
bool IsBooleanValueOrMaterializedCondition(HInstruction* cond_input);
template <typename T> T AbsOrMin(T value) {
return (value == std::numeric_limits<T>::min())
? value
: std::abs(value);
}
// Check whether the i-th operand of instr is non-negative.
bool HasNonNegativeInputAt(HInstruction* instr, size_t i);
// Check whether the i-th operand of instr is non-negative or the minimum integer value.
bool HasNonNegativeOrMinIntInputAt(HInstruction* instr, size_t i);
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_UTILS_H_