1  /* { dg-do compile } */
       2  /* { dg-require-effective-target vect_int } */
       3  /* For negative stride we need to reverse the aligned load.  */
       4  /* { dg-require-effective-target vect_perm } */
       5  
       6  void b (int *p)
       7  {
       8    p = (int *)__builtin_assume_aligned(p, __BIGGEST_ALIGNMENT__);
       9    int *q = p + 255;
      10    for(; p < q; ++p, --q)
      11      {
      12        int t = *p;
      13        *p = *q;
      14        *q = t;
      15      }
      16  }
      17  
      18  /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */