1 files changed, 38 insertions, 0 deletions
diff --git a/backend/include/rcc/CodeGen/MachineSink.h b/backend/include/rcc/CodeGen/MachineSink.h
new file mode 100644
index 0000000..5b47f9b
--- /dev/null
+++ b/backend/include/rcc/CodeGen/MachineSink.h
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_CODEGEN_MACHINESINK_H
+#define RCC_CODEGEN_MACHINESINK_H
+
+#include "rcc/CodeGen/MachineLICM.h"
+
+#include <cstddef>
+
+namespace rcc {
+
+struct MachineSinkOptions final {
+  std::size_t MaximumSunkInstructions = 10'000;
+};
+
+class MachineSinkPass final : public MachineFunctionPass {
+public:
+  explicit MachineSinkPass(MachineSinkOptions Options = {}) : Options(Options) {}
+  MachineSinkPass(MachineCodeMotionStage Stage, MachineSinkOptions 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;
+  MachineSinkOptions Options;
+};
+
+} // namespace rcc
+
+#endif // RCC_CODEGEN_MACHINESINK_H