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  1. //===- OpenMP/OMPAssume.h --- OpenMP assumption helper functions  - 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. /// \file
  9. ///
  10. /// This file provides helper functions and classes to deal with OpenMP
  11. /// assumptions, e.g., as used by `[begin/end] assumes` and `assume`.
  12. ///
  13. //===----------------------------------------------------------------------===//
  14.  
  15. #ifndef LLVM_FRONTEND_OPENMP_OMPASSUME_H
  16. #define LLVM_FRONTEND_OPENMP_OMPASSUME_H
  17.  
  18. #include "llvm/ADT/StringRef.h"
  19.  
  20. namespace llvm {
  21.  
  22. namespace omp {
  23.  
  24. /// Helper to describe assume clauses.
  25. struct AssumptionClauseMappingInfo {
  26.   /// The identifier describing the (beginning of the) clause.
  27.   llvm::StringLiteral Identifier;
  28.   /// Flag to determine if the identifier is a full name or the start of a name.
  29.   bool StartsWith;
  30.   /// Flag to determine if a directive lists follows.
  31.   bool HasDirectiveList;
  32.   /// Flag to determine if an expression follows.
  33.   bool HasExpression;
  34. };
  35.  
  36. /// All known assume clauses.
  37. static constexpr AssumptionClauseMappingInfo AssumptionClauseMappings[] = {
  38. #define OMP_ASSUME_CLAUSE(Identifier, StartsWith, HasDirectiveList,            \
  39.                           HasExpression)                                       \
  40.   {Identifier, StartsWith, HasDirectiveList, HasExpression},
  41. #include "llvm/Frontend/OpenMP/OMPKinds.def"
  42. };
  43.  
  44. inline std::string getAllAssumeClauseOptions() {
  45.   std::string S;
  46.   for (const AssumptionClauseMappingInfo &ACMI : AssumptionClauseMappings)
  47.     S += (S.empty() ? "'" : "', '") + ACMI.Identifier.str();
  48.   return S + "'";
  49. }
  50.  
  51. } // namespace omp
  52.  
  53. } // namespace llvm
  54.  
  55. #endif // LLVM_FRONTEND_OPENMP_OMPASSUME_H
  56.