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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_MACHINELICM_H
#define RCC_CODEGEN_MACHINELICM_H
#include "rcc/CodeGen/MachinePassManager.h"
#include <cstddef>
#include <cstdint>
namespace rcc {
enum class MachineCodeMotionStage : std::uint8_t {
SelectedSSA,
PostRegisterAllocation,
};
struct MachineLICMOptions final {
std::size_t MaximumHoistedInstructions = 10'000;
std::size_t MaximumHoistedDefinitionsPerLoop = 256;
};
class MachineLICMPass final : public MachineFunctionPass {
public:
explicit MachineLICMPass(MachineLICMOptions Options = {}) : Options(Options) {}
MachineLICMPass(MachineCodeMotionStage Stage, MachineLICMOptions Options = {})
: Stage(Stage), Options(Options) {}
[[nodiscard]] const MachinePassContract &contract() const noexcept override;
[[nodiscard]] Expected<MachinePassResult> run(MachineFunction &Function,
const TargetDescription &Target,
MachineFunctionAnalysisManager &Analyses) override;
private:
[[nodiscard]] Expected<MachinePassResult>
runImplementation(MachineFunction &Function, const TargetDescription &Target,
MachineFunctionAnalysisManager &Analyses);
MachineCodeMotionStage Stage = MachineCodeMotionStage::SelectedSSA;
MachineLICMOptions Options;
};
} // namespace rcc
#endif // RCC_CODEGEN_MACHINELICM_H
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