1 files changed, 60 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-1.c b/gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-1.c
new file mode 100644
index 00000000000..61f1da19d6e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-1.c
@@ -0,0 +1,60 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16
+#define SH_SUM 210
+#define CH_SUM 120
+
+int main1 ()
+{
+  int i;
+  unsigned short udata_sh[N] = {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28};
+  unsigned char udata_ch[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
+  unsigned int intsum = 0;
+  unsigned short shortsum = 0;
+
+  /* widenning sum: sum shorts into int.  */
+  for (i = 0; i < N; i++){
+    intsum += udata_sh[i];
+  }
+
+  /* check results:  */
+  if (intsum != SH_SUM)
+    abort ();
+
+  /* widenning sum: sum chars into int.  */
+  intsum = 0;
+  for (i = 0; i < N; i++){
+    intsum += udata_ch[i];
+  }
+
+  /* check results:  */
+  if (intsum != CH_SUM)
+    abort ();
+
+  /* widenning sum: sum chars into short.  
+     pattern detected, but not vectorized yet. */
+  for (i = 0; i < N; i++){
+    shortsum += udata_ch[i];
+  }
+
+  /* check results:  */
+  if (shortsum != CH_SUM)
+    abort ();
+
+  return 0;
+}
+
+int main (void)
+{ 
+  check_vect ();
+  
+  return main1 ();
+}
+
+/* { dg-final { scan-tree-dump-times "vect_recog_widen_sum_pattern: detected" 3 "vect" } } */
+/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail *-*-* } } } */
+/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { target vect_widen_sum } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */