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52 lines
1.8 KiB
52 lines
1.8 KiB
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_COMPILER_OPTIMIZING_CODE_GENERATOR_UTILS_H_
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#define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_UTILS_H_
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#include <cstdint>
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#include <cstdlib>
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#include <limits>
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namespace art {
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class HInstruction;
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// Computes the magic number and the shift needed in the div/rem by constant algorithm, as out
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// arguments `magic` and `shift`
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void CalculateMagicAndShiftForDivRem(int64_t divisor, bool is_long, int64_t* magic, int* shift);
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// Returns true if `cond_input` is expected to have a location. Assumes that
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// `cond_input` is a conditional input of the currently emitted instruction and
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// that it has been previously visited by the InstructionCodeGenerator.
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bool IsBooleanValueOrMaterializedCondition(HInstruction* cond_input);
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template <typename T> T AbsOrMin(T value) {
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return (value == std::numeric_limits<T>::min())
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? value
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: std::abs(value);
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}
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// Check whether the i-th operand of instr is non-negative.
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bool HasNonNegativeInputAt(HInstruction* instr, size_t i);
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// Check whether the i-th operand of instr is non-negative or the minimum integer value.
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bool HasNonNegativeOrMinIntInputAt(HInstruction* instr, size_t i);
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} // namespace art
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#endif // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_UTILS_H_
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