[flang][openmp] Use common Directive and Clause enum from llvm/Frontend

Summary:
This patch is removing the custom enumeration for OpenMP Directives and Clauses and replace them
with the newly tablegen generated one from llvm/Frontend. This is a first patch and some will follow to share the same
infrastructure where possible. The next patch should use the clauses allowance defined in the tablegen file.

Reviewers: jdoerfert, DavidTruby, sscalpone, kiranchandramohan, ichoyjx

Reviewed By: DavidTruby, ichoyjx

Subscribers: jholewinski, cfe-commits, dblaikie, MaskRay, ymandel, ichoyjx, mgorny, yaxunl, guansong, jfb, sstefan1, aaron.ballman, llvm-commits

Tags: #llvm, #flang, #clang

Differential Revision: https://reviews.llvm.org/D82906

1 files changed, 5 insertions, 0 deletions

diff --git a/clang/lib/Basic/OpenMPKinds.cpp b/clang/lib/Basic/OpenMPKinds.cpp
index 87d2c4b..cae61ad 100644
--- a/clang/lib/Basic/OpenMPKinds.cpp
+++ b/clang/lib/Basic/OpenMPKinds.cpp
@@ -178,6 +178,8 @@ unsigned clang::getOpenMPSimpleClauseType(OpenMPClauseKind Kind,
   case OMPC_uses_allocators:
   case OMPC_affinity:
     break;
+  default:
+    break;
   }
   llvm_unreachable("Invalid OpenMP simple clause kind");
 }
@@ -427,6 +429,8 @@ const char *clang::getOpenMPSimpleClauseTypeName(OpenMPClauseKind Kind,
   case OMPC_uses_allocators:
   case OMPC_affinity:
     break;
+  default:
+    break;
   }
   llvm_unreachable("Invalid OpenMP simple clause kind");
 }
@@ -681,6 +685,7 @@ void clang::getOpenMPCaptureRegions(
   case OMPD_end_declare_variant:
     llvm_unreachable("OpenMP Directive is not allowed");
   case OMPD_unknown:
+  default:
     llvm_unreachable("Unknown OpenMP directive");
   }
 }