1 files changed, 54 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/vect/vect-reduc-sad.c b/gcc-4.9/gcc/testsuite/gcc.dg/vect/vect-reduc-sad.c
new file mode 100644
index 000000000..15a625f6a
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/vect/vect-reduc-sad.c
@@ -0,0 +1,54 @@
+/* { dg-require-effective-target vect_usad_char } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 64
+#define SAD N*N/2
+
+unsigned char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+unsigned char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+
+/* Sum of absolute differences between arrays of unsigned char types.
+   Detected as a sad pattern.
+   Vectorized on targets that support sad for unsigned chars.  */
+
+__attribute__ ((noinline)) int
+foo (int len)
+{
+  int i;
+  int result = 0;
+
+  for (i = 0; i < len; i++)
+    result += abs (X[i] - Y[i]);
+
+  return result;
+}
+
+
+int
+main (void)
+{
+  int i;
+  int sad;
+
+  check_vect ();
+
+  for (i = 0; i < N; i++)
+    {
+      X[i] = i;
+      Y[i] = N - i;
+      __asm__ volatile ("");
+    }
+
+  sad = foo (N);
+  if (sad != SAD)
+    abort ();
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vect_recog_sad_pattern: detected" 1 "vect" } } */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+