1 files changed, 64 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/vect-over-widen-3.c b/gcc/testsuite/gcc.dg/vect/vect-over-widen-3.c
new file mode 100644
index 00000000000..ed36688f6c6
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-over-widen-3.c
@@ -0,0 +1,64 @@
+/* { dg-require-effective-target vect_int } */
+/* { dg-require-effective-target vect_shift } */
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 64
+
+/* Modified rgb to rgb conversion from FFmpeg.  */
+__attribute__ ((noinline)) void
+foo (unsigned char *src, unsigned char *dst)
+{
+  unsigned char *s = src;
+  unsigned short *d = (unsigned short *)dst;
+  int i;
+
+  for (i = 0; i < N/4; i++)
+    {
+      const int b = *s++;
+      const int g = *s++;
+      const int r = *s++;
+      const int a = *s++;
+      *d = ((b>>3) | ((g&0xFFC)<<3) | ((r+0xF8)>>8) | (a<<9));
+      d++;
+    }
+
+  s = src;
+  d = (unsigned short *)dst;
+  for (i = 0; i < N/4; i++)
+    {
+      const int b = *s++;
+      const int g = *s++;
+      const int r = *s++;
+      const int a = *s++;
+      if (*d != ((b>>3) | ((g&0xFFC)<<3) | ((r+0xF8)>>8) | (a<<9)))
+        abort ();
+      d++;
+    }
+}
+
+int main (void)
+{
+  int i;
+  unsigned char in[N], out[N];
+
+  check_vect ();
+
+  for (i = 0; i < N; i++)
+    {
+      in[i] = i;
+      out[i] = 255;
+      __asm__ volatile ("");
+    }
+
+  foo (in, out);
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vect_recog_over_widening_pattern: detected" 1 "vect" } } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+