--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/vect/vect-50.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,68 @@
+/* { dg-require-effective-target vect_float } */
+/* { dg-additional-options "--param vect-max-peeling-for-alignment=0" } */
+
+#include "tree-vect.h"
+
+#define N 256
+
+__attribute__ ((noinline))
+void bar (float *pa, float *pb, float *pc) 
+{
+  int i;
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (pa[i] != (pb[i] * pc[i]))
+	abort ();
+    }
+
+  return;
+}
+
+__attribute__ ((noinline)) int
+main1 (int n, float * __restrict__ pa, float * __restrict__ pb, float * __restrict__ pc)
+{
+  int i;
+
+  for (i = 0; i < n; i++)
+    {
+      pa[i] = pb[i] * pc[i];
+    }
+
+  bar (pa,pb,pc);
+
+  return 0;
+}
+
+/* Unaligned pointer accesses, with unknown alignment.
+   The loop bound is unknown.
+   No aliasing problems.
+   vect-44.c is similar to this one with one difference:
+        the loop bound is known.  
+   vect-51.c is similar to this one with one difference:
+        can't prove that pointers don't alias.  */
+
+int main (void)
+{
+  int i;
+  float a[N];
+  float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
+  float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
+
+  check_vect ();
+
+  main1 (N,a,b,c);
+  return 0;
+}
+
+/* For targets that don't support misaligned loads and don't support
+   misaligned stores we version for the all three accesses (peeling to
+   align the store will not force the two loads to be aligned).  */
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
+/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 3 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
+/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 3 "vect" { target vect_hw_misalign } } } */
+/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" { xfail { { vect_no_align && { ! vect_hw_misalign } } || {! vector_alignment_reachable} } } } } */
+/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 3 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
+/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 1 "vect" { target { {! vector_alignment_reachable} && { {! vect_no_align } && {! vect_hw_misalign } } } } } } */