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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_MACHINETAILDUPLICATION_H
#define RCC_CODEGEN_MACHINETAILDUPLICATION_H
#include "rcc/CodeGen/MachinePassManager.h"
#include <cstddef>
namespace rcc {
class TargetInstrInfo;
struct MachineTailDuplicationOptions final {
std::size_t MaximumTailInstructions = 8;
std::size_t MaximumDuplicatedInstructions = 4'096;
};
class MachineTailDuplicationPass final : public MachineFunctionPass {
public:
explicit MachineTailDuplicationPass(const TargetInstrInfo &Info,
MachineTailDuplicationOptions Options = {}) noexcept
: Info(&Info), 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) const;
const TargetInstrInfo *Info;
MachineTailDuplicationOptions Options;
};
} // namespace rcc
#endif // RCC_CODEGEN_MACHINETAILDUPLICATION_H
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