Mark by_ref mem_ref in build_receiver_ref as non-trapping

2015-11-23  Tom de Vries  <tom@codesourcery.com>

	* omp-low.c (build_receiver_ref): Mark by_ref mem_ref as non-trapping.

From-SVN: r230738

gcc/ChangeLog

+2015-11-23  Tom de Vries  <tom@codesourcery.com>
+
+	* omp-low.c (build_receiver_ref): Mark by_ref mem_ref as non-trapping.
+
 2015-11-23  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/68445

gcc/omp-low.c

@@ -1249,7 +1249,10 @@ build_receiver_ref (tree var, bool by_ref, omp_context *ctx)
   TREE_THIS_NOTRAP (x) = 1;
   x = omp_build_component_ref (x, field);
   if (by_ref)
-    x = build_simple_mem_ref (x);
+    {
+      x = build_simple_mem_ref (x);
+      TREE_THIS_NOTRAP (x) = 1;
+    }
 
   return x;
 }