[OPENMP 4.0] Initial support for 'omp cancel' construct.

Implemented parsing/sema analysis + (de)serialization.

llvm-svn: 241253
diff --git a/clang/lib/Basic/OpenMPKinds.cpp b/clang/lib/Basic/OpenMPKinds.cpp
index 0e9d0c0..b7407f6 100644
--- a/clang/lib/Basic/OpenMPKinds.cpp
+++ b/clang/lib/Basic/OpenMPKinds.cpp
@@ -348,6 +348,7 @@
   case OMPD_taskwait:
   case OMPD_taskgroup:
   case OMPD_cancellation_point:
+  case OMPD_cancel:
   case OMPD_ordered:
     break;
   }