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  1. //===- IPO/OpenMPOpt.h - Collection of OpenMP optimizations -----*- 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. #ifndef LLVM_TRANSFORMS_IPO_OPENMPOPT_H
  10. #define LLVM_TRANSFORMS_IPO_OPENMPOPT_H
  11.  
  12. #include "llvm/Analysis/CGSCCPassManager.h"
  13. #include "llvm/Analysis/LazyCallGraph.h"
  14. #include "llvm/IR/PassManager.h"
  15.  
  16. namespace llvm {
  17.  
  18. namespace omp {
  19.  
  20. /// Summary of a kernel (=entry point for target offloading).
  21. using Kernel = Function *;
  22.  
  23. /// Set of kernels in the module
  24. using KernelSet = SetVector<Kernel>;
  25.  
  26. /// Helper to determine if \p M contains OpenMP.
  27. bool containsOpenMP(Module &M);
  28.  
  29. /// Helper to determine if \p M is a OpenMP target offloading device module.
  30. bool isOpenMPDevice(Module &M);
  31.  
  32. /// Get OpenMP device kernels in \p M.
  33. KernelSet getDeviceKernels(Module &M);
  34.  
  35. } // namespace omp
  36.  
  37. /// OpenMP optimizations pass.
  38. class OpenMPOptPass : public PassInfoMixin<OpenMPOptPass> {
  39. public:
  40.   OpenMPOptPass() : LTOPhase(ThinOrFullLTOPhase::None) {}
  41.   OpenMPOptPass(ThinOrFullLTOPhase LTOPhase) : LTOPhase(LTOPhase) {}
  42.  
  43.   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
  44.  
  45. private:
  46.   const ThinOrFullLTOPhase LTOPhase = ThinOrFullLTOPhase::None;
  47. };
  48.  
  49. class OpenMPOptCGSCCPass : public PassInfoMixin<OpenMPOptCGSCCPass> {
  50. public:
  51.   OpenMPOptCGSCCPass() : LTOPhase(ThinOrFullLTOPhase::None) {}
  52.   OpenMPOptCGSCCPass(ThinOrFullLTOPhase LTOPhase) : LTOPhase(LTOPhase) {}
  53.  
  54.   PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM,
  55.                         LazyCallGraph &CG, CGSCCUpdateResult &UR);
  56.  
  57. private:
  58.   const ThinOrFullLTOPhase LTOPhase = ThinOrFullLTOPhase::None;
  59. };
  60.  
  61. } // end namespace llvm
  62.  
  63. #endif // LLVM_TRANSFORMS_IPO_OPENMPOPT_H
  64.