[OPENMP] Initial parsing and sema analysis of 'mergeable' clause.

llvm-svn: 213262
diff --git a/clang/test/OpenMP/task_messages.cpp b/clang/test/OpenMP/task_messages.cpp
index 7491c23..88c339a 100644
--- a/clang/test/OpenMP/task_messages.cpp
+++ b/clang/test/OpenMP/task_messages.cpp
@@ -100,6 +100,9 @@
 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
 #pragma omp task untied untied
   ++r;
+// expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
+#pragma omp task mergeable mergeable
+  ++r;
   return a + b;
 }
 
@@ -262,6 +265,9 @@
 // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
 #pragma omp task untied untied
   ++r;
+// expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
+#pragma omp task mergeable mergeable
+  ++r;
   // expected-note@+2 {{in instantiation of function template specialization 'foo<int>' requested here}}
   // expected-note@+1 {{in instantiation of function template specialization 'foo<S>' requested here}}
   return foo<int>() + foo<S>();