1 files changed, 39 insertions, 0 deletions
diff --git a/backend/include/rcc/CodeGen/MachineMemoryFolding.h b/backend/include/rcc/CodeGen/MachineMemoryFolding.h
new file mode 100644
index 0000000..9a5b47a
--- /dev/null
+++ b/backend/include/rcc/CodeGen/MachineMemoryFolding.h
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_CODEGEN_MACHINEMEMORYFOLDING_H
+#define RCC_CODEGEN_MACHINEMEMORYFOLDING_H
+
+#include "rcc/CodeGen/MachinePass.h"
+
+#include <cstddef>
+
+namespace rcc {
+
+class TargetMemoryFoldingInfo;
+
+struct MachineMemoryFoldingOptions final {
+  std::size_t MaximumFolds = 4'096;
+};
+
+class MachineMemoryFoldingPass final : public MachineFunctionPass {
+public:
+  explicit MachineMemoryFoldingPass(const TargetMemoryFoldingInfo &Info,
+                                    MachineMemoryFoldingOptions Options = {}) noexcept
+      : Info(&Info), Options(Options) {}
+
+  [[nodiscard]] const MachinePassContract &contract() const noexcept override;
+  [[nodiscard]] Expected<MachinePassResult> run(MachineFunction &Function,
+                                                const TargetDescription &Target,
+                                                MachineAnalysisManager &Analyses) override;
+
+private:
+  [[nodiscard]] Expected<MachinePassResult>
+  runImplementation(MachineFunction &Function, const TargetDescription &Target) const;
+
+  const TargetMemoryFoldingInfo *Info;
+  MachineMemoryFoldingOptions Options;
+};
+
+} // namespace rcc
+
+#endif // RCC_CODEGEN_MACHINEMEMORYFOLDING_H