1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-2a.c b/gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-2a.c
new file mode 100644
index 000000000..695738629
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-2a.c
@@ -0,0 +1,40 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16
+signed short data_sh[N] =
+  { 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 };
+#define SUM 210
+
+__attribute__ ((noinline)) int
+foo ()
+{
+  int i;
+  signed int intsum = 0;
+
+  /* widenning sum: sum shorts into int.  */
+  for (i = 0; i < N; i++)
+    {
+      intsum += data_sh[i];
+    }
+
+  /* check results:  */
+  if (intsum != SUM)
+    abort ();
+
+  return 0;
+}
+
+int
+main (void)
+{
+  check_vect ();
+  return foo ();
+}
+
+/* { dg-final { scan-tree-dump-times "vect_recog_widen_sum_pattern: detected" 1 "vect" } } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_widen_sum_hi_to_si } } } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" { target { ! vect_widen_sum_hi_to_si } } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */