1 files changed, 62 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/no-vfa-vect-37.c b/gcc/testsuite/gcc.dg/vect/no-vfa-vect-37.c
new file mode 100644
index 000000000..dc17239a3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/no-vfa-vect-37.c
@@ -0,0 +1,62 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16
+char x[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+char cb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
+ 
+__attribute__ ((noinline))
+int main1 (char *y)
+{  
+  struct {
+    char *p;
+    char *q;
+  } s;
+  int i;
+
+  /* Not vectorized - can't antialias the pointer s.p from the array cb.  */
+  s.p = y;
+  for (i = 0; i < N; i++)
+    {
+      s.p[i] = cb[i];
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (s.p[i] != cb[i])
+        abort ();
+    }
+
+  /* Not vectorized - can't antialias the pointer s.p from the pointer s.q.  */
+  s.q = cb;
+  for (i = 0; i < N; i++)
+    {
+      s.p[i] = s.q[i];
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (s.p[i] != s.q[i])
+        abort ();
+    }
+
+  return 0;
+}
+
+int main (void)
+{ 
+  check_vect ();
+  
+  return main1 (x);
+} 
+
+/* Currently the loops fail to vectorize due to aliasing problems.
+   If/when the aliasing problems are resolved, unalignment may
+   prevent vectorization on some targets.  */
+/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { xfail *-*-* } } } */
+/* { dg-final { scan-tree-dump-times "can't determine dependence between" 2 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */