[OPENMP 4.0] Initial support for 'omp cancellation point' construct.

Add parsing and sema analysis for 'omp cancellation point' directive.

llvm-svn: 241145
diff --git a/clang/lib/Basic/OpenMPKinds.cpp b/clang/lib/Basic/OpenMPKinds.cpp
index e4694b4..0e9d0c0 100644
--- a/clang/lib/Basic/OpenMPKinds.cpp
+++ b/clang/lib/Basic/OpenMPKinds.cpp
@@ -347,6 +347,7 @@
   case OMPD_barrier:
   case OMPD_taskwait:
   case OMPD_taskgroup:
+  case OMPD_cancellation_point:
   case OMPD_ordered:
     break;
   }