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  1. //===- LoopRotation.h - Loop Rotation -------------------------------------===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8. //
  9. // This file provides the interface for the Loop Rotation pass.
  10. //
  11. //===----------------------------------------------------------------------===//
  12.  
  13. #ifndef LLVM_TRANSFORMS_SCALAR_LOOPROTATION_H
  14. #define LLVM_TRANSFORMS_SCALAR_LOOPROTATION_H
  15.  
  16. #include "llvm/Analysis/LoopAnalysisManager.h"
  17. #include "llvm/IR/PassManager.h"
  18.  
  19. namespace llvm {
  20. class LPMUpdater;
  21. class Loop;
  22.  
  23. /// A simple loop rotation transformation.
  24. class LoopRotatePass : public PassInfoMixin<LoopRotatePass> {
  25. public:
  26.   LoopRotatePass(bool EnableHeaderDuplication = true,
  27.                  bool PrepareForLTO = false);
  28.   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
  29.                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
  30.  
  31. private:
  32.   const bool EnableHeaderDuplication;
  33.   const bool PrepareForLTO;
  34. };
  35. }
  36.  
  37. #endif // LLVM_TRANSFORMS_SCALAR_LOOPROTATION_H
  38.