LowerAtomic.h 1.4 KB

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  1. #pragma once
  2. #ifdef __GNUC__
  3. #pragma GCC diagnostic push
  4. #pragma GCC diagnostic ignored "-Wunused-parameter"
  5. #endif
  6. //===- LowerAtomic.cpp - Lower atomic intrinsics ----------------*- C++ -*-===//
  7. //
  8. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  9. // See https://llvm.org/LICENSE.txt for license information.
  10. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  11. //
  12. //===----------------------------------------------------------------------===//
  13. /// \file
  14. // This pass lowers atomic intrinsics to non-atomic form for use in a known
  15. // non-preemptible environment.
  16. ///
  17. //===----------------------------------------------------------------------===//
  18. #ifndef LLVM_TRANSFORMS_SCALAR_LOWERATOMIC_H
  19. #define LLVM_TRANSFORMS_SCALAR_LOWERATOMIC_H
  20. #include "llvm/IR/PassManager.h"
  21. namespace llvm {
  22. /// A pass that lowers atomic intrinsic into non-atomic intrinsics.
  23. class LowerAtomicPass : public PassInfoMixin<LowerAtomicPass> {
  24. public:
  25. PreservedAnalyses run(Function &F, FunctionAnalysisManager &);
  26. static bool isRequired() { return true; }
  27. };
  28. class AtomicRMWInst;
  29. /// Convert the given RMWI into primitive load and stores,
  30. /// assuming that doing so is legal. Return true if the lowering
  31. /// succeeds.
  32. bool lowerAtomicRMWInst(AtomicRMWInst *RMWI);
  33. }
  34. #endif // LLVM_TRANSFORMS_SCALAR_LOWERATOMIC_H
  35. #ifdef __GNUC__
  36. #pragma GCC diagnostic pop
  37. #endif