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  1. //===- LoopPredication.h - Guard based loop predication pass ----*- C++ -*-===//
  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 pass tries to convert loop variant range checks to loop invariant by
  10. // widening checks across loop iterations.
  11. //
  12. //===----------------------------------------------------------------------===//
  13.  
  14. #ifndef LLVM_TRANSFORMS_SCALAR_LOOPPREDICATION_H
  15. #define LLVM_TRANSFORMS_SCALAR_LOOPPREDICATION_H
  16.  
  17. #include "llvm/Analysis/LoopAnalysisManager.h"
  18. #include "llvm/IR/PassManager.h"
  19.  
  20. namespace llvm {
  21.  
  22. class LPMUpdater;
  23. class Loop;
  24. /// Performs Loop Predication Pass.
  25. class LoopPredicationPass : public PassInfoMixin<LoopPredicationPass> {
  26. public:
  27.   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
  28.                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
  29. };
  30. } // end namespace llvm
  31.  
  32. #endif // LLVM_TRANSFORMS_SCALAR_LOOPPREDICATION_H
  33.