1 files changed, 59 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c
new file mode 100644
index 00000000000..39078dfc4f3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c
@@ -0,0 +1,59 @@
+/* { dg-require-effective-target vect_int } */
+
+#include "tree-vect.h"
+#include <stdlib.h>
+
+#define N 32
+#define COEF 32470
+
+unsigned char in[N];
+int out[N];
+
+__attribute__ ((noinline)) void
+foo ()
+{
+  int i;
+
+  for (i = 0; i < N; i++)
+    out[i] = in[i] * COEF;
+}
+
+__attribute__ ((noinline)) void
+bar ()
+{
+  int i;
+
+  for (i = 0; i < N; i++)
+    out[i] = COEF * in[i];
+}
+
+int main (void)
+{
+  int i;
+
+  for (i = 0; i < N; i++)
+    {
+      in[i] = i;
+      __asm__ volatile ("");
+    }
+
+  foo ();
+
+  for (i = 0; i < N; i++)
+    if (out[i] != in[i] * COEF)
+      abort ();
+
+  bar ();
+
+  for (i = 0; i < N; i++)
+    if (out[i] != in[i] * COEF)
+      abort ();
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target vect_widen_mult_hi_to_si } } } */
+/* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
+/* { dg-final { scan-tree-dump-times "pattern recognized" 2 "vect" { target vect_widen_mult_hi_to_si_pattern } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+