omp-low.c (lower_rec_simd_input_clauses): Set TREE_THIS_NOTRAP on ivar and lvar.

	* omp-low.c (lower_rec_simd_input_clauses): Set TREE_THIS_NOTRAP on
	ivar and lvar.

	* gcc.dg/vect/vect-simd-5.c: New test.

From-SVN: r271824

gcc/ChangeLog

+2019-05-31  Jakub Jelinek  <jakub@redhat.com>
+
+	* omp-low.c (lower_rec_simd_input_clauses): Set TREE_THIS_NOTRAP on
+	ivar and lvar.
+
 2019-05-31  Xiong Hu Luo  <luoxhu@linux.ibm.com>
 
 	PR c/43673

gcc/omp-low.c

@@ -3728,6 +3728,8 @@ lower_rec_simd_input_clauses (tree new_var, omp_context *ctx,
 		     NULL_TREE, NULL_TREE);
       lvar = build4 (ARRAY_REF, TREE_TYPE (new_var), avar, sctx->lane,
 		     NULL_TREE, NULL_TREE);
+      TREE_THIS_NOTRAP (ivar) = 1;
+      TREE_THIS_NOTRAP (lvar) = 1;
     }
   if (DECL_P (new_var))
     {

gcc/testsuite/ChangeLog

+2019-05-31  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/vect/vect-simd-5.c: New test.
+
 2019-05-31  Xiong Hu Luo  <luoxhu@linux.ibm.com>
 
 	PR c/43673

gcc/testsuite/gcc.dg/vect/vect-simd-5.c

+/* { dg-do compile } */
+/* { dg-additional-options "-fopenmp-simd" } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_condition } } } */
+
+int x;
+
+void
+foo (int *a)
+{
+  #pragma omp simd lastprivate (x)
+  for (int i = 0; i < 1024; ++i)
+    if (a[i])
+      x = i;
+}