1 files changed, 52 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-8a.c b/gcc/testsuite/gcc.dg/vect/bb-slp-8a.c
new file mode 100644
index 000000000..2251275d4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-8a.c
@@ -0,0 +1,52 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16 
+
+unsigned int out[N];
+unsigned int in[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
+
+__attribute__ ((noinline)) int
+main1 (unsigned int x, unsigned int y, unsigned int *pin, unsigned int *pout)
+{
+  int i;
+  unsigned int a0, a1, a2, a3;
+ 
+  /* pin and pout may alias, and loads and stores are mixed.  The basic block
+     cannot be vectorized.  */
+  a0 = *pin++ + 23;
+  *pout++ = a0 * x;
+  a1 = *pin++ + 142;
+  *pout++ = a1 * y;
+  a2 = *pin++ + 2;
+  *pout++ = a2 * x;
+  a3 = *pin++ + 31;
+  *pout++ = a3 * y;
+
+  if (i)
+    __asm__ volatile ("" : : : "memory");
+
+  /* Check results.  */
+  if (out[0] != (in[0] + 23) * x
+      || out[1] != (in[1] + 142) * y
+      || out[2] != (in[2] + 2) * x
+      || out[3] != (in[3] + 31) * y)
+    abort ();
+
+  return 0;
+}
+
+int main (void)
+{
+  check_vect ();
+
+  main1 (2, 3, &in[0], &out[0]);
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "basic block vectorized using SLP" 0 "slp" } } */
+/* { dg-final { cleanup-tree-dump "slp" } } */
+