gcc/testsuite/gcc.dg/vect/vect-26.c

/* Disabling epilogues until we find a better way to deal with scans.  */
/* { dg-additional-options "--param vect-epilogues-nomask=0" } */
/* { dg-require-effective-target vect_int } */

#include <stdarg.h>
#include "tree-vect.h"

#define N 128

/* unaligned store.  */

__attribute__ ((noinline))
int main1 ()
{
  int i;
  int ia[N+1];

  for (i = 1; i <= N; i++)
    {
      ia[i] = 5;
    }

  /* check results:  */
  for (i = 1; i <= N; i++)
    {
      if (ia[i] != 5)
        abort ();
    }

  return 0;
}

int main (void)
{ 
  check_vect ();
  
  return main1 ();
}

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" { xfail { ! vect_align_stack_vars } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 1 "vect" { xfail { vect_element_align_preferred || { ! vect_align_stack_vars } } } } } */