[OPENMP] Initial parsing and sema analysis for 'read' clause in 'atomic' directive.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213717 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 32 insertions, 5 deletions

diff --git a/test/OpenMP/atomic_messages.cpp b/test/OpenMP/atomic_messages.cpp
index 6eef8f227d..7b35e42dc7 100644
--- a/test/OpenMP/atomic_messages.cpp
+++ b/test/OpenMP/atomic_messages.cpp
@@ -1,20 +1,47 @@
 // RUN: %clang_cc1 -verify -fopenmp=libiomp5 -ferror-limit 100 %s
 
 int foo() {
-  L1:
-    foo();
-  #pragma omp atomic
+L1:
+  foo();
+#pragma omp atomic
   {
     foo();
     goto L1; // expected-error {{use of undeclared label 'L1'}}
   }
   goto L2; // expected-error {{use of undeclared label 'L2'}}
-  #pragma omp atomic
+#pragma omp atomic
   {
     foo();
-    L2:
+  L2:
     foo();
   }
 
   return 0;
 }
+
+template <class T>
+T read() {
+  T a, b = 0;
+// Test for atomic read
+#pragma omp atomic read
+// expected-error@+1 {{the statement for 'atomic read' must be an expression statement of form 'v = x;', where v and x are both l-value expressions with scalar type}}
+  ;
+// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'read' clause}}
+#pragma omp atomic read read
+  a = b;
+
+  return T();
+}
+
+int read() {
+  int a, b = 0;
+// Test for atomic read
+#pragma omp atomic read
+// expected-error@+1 {{the statement for 'atomic read' must be an expression statement of form 'v = x;', where v and x are both l-value expressions with scalar type}}
+  ;
+// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'read' clause}}
+#pragma omp atomic read read
+  a = b;
+
+  return read<int>();
+}