From 495c675771f43cfa12ab7a426a538be72fec1805 Mon Sep 17 00:00:00 2001 From: Richard-Qin-X Date: Sun, 9 Aug 2026 17:03:19 +0800 Subject: [CodeGen] Implement machine optimization and scheduling --- backend/include/rcc/CodeGen/MachineLICM.h | 45 +++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 backend/include/rcc/CodeGen/MachineLICM.h (limited to 'backend/include/rcc/CodeGen/MachineLICM.h') diff --git a/backend/include/rcc/CodeGen/MachineLICM.h b/backend/include/rcc/CodeGen/MachineLICM.h new file mode 100644 index 0000000..66b7ef8 --- /dev/null +++ b/backend/include/rcc/CodeGen/MachineLICM.h @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#ifndef RCC_CODEGEN_MACHINELICM_H +#define RCC_CODEGEN_MACHINELICM_H + +#include "rcc/CodeGen/MachinePass.h" + +#include +#include + +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 run(MachineFunction &Function, + const TargetDescription &Target, + MachineAnalysisManager &Analyses) override; + +private: + [[nodiscard]] Expected runImplementation(MachineFunction &Function, + const TargetDescription &Target, + MachineAnalysisManager &Analyses); + + MachineCodeMotionStage Stage = MachineCodeMotionStage::SelectedSSA; + MachineLICMOptions Options; +}; + +} // namespace rcc + +#endif // RCC_CODEGEN_MACHINELICM_H -- cgit v1.2.3