30 lines
798 B
C++
30 lines
798 B
C++
#ifndef RISCV64_DIV_STRENGTH_REDUCTION_H
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#define RISCV64_DIV_STRENGTH_REDUCTION_H
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#include "RISCv64LLIR.h"
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#include "Pass.h"
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namespace sysy {
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/**
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* @class DivStrengthReduction
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* @brief 除法强度削弱优化器
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* * 将除法运算转换为乘法运算，使用magic number算法
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* 适用于除数为常数的情况，可以显著提高性能
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*/
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class DivStrengthReduction : public Pass {
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public:
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static char ID;
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DivStrengthReduction() : Pass("div-strength-reduction", Granularity::Function, PassKind::Optimization) {}
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void *getPassID() const override { return &ID; }
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bool runOnFunction(Function *F, AnalysisManager& AM) override;
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void runOnMachineFunction(MachineFunction* mfunc);
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};
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} // namespace sysy
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#endif // RISCV64_DIV_STRENGTH_REDUCTION_H
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