1  /* PR tree-optimization/91201 */
       2  /* { dg-do compile { target lp64 } } */
       3  /* { dg-options "-O3 -msse2 -mno-sse3" } */
       4  /* { dg-final { scan-assembler "\tpsadbw\t" } } */
       5  
       6  unsigned char bytes[1024];
       7  
       8  unsigned char
       9  sum (void)
      10  {
      11    unsigned char r = 0;
      12    unsigned char *p = (unsigned char *) bytes;
      13    int n;
      14  
      15    for (n = 8; n < sizeof (bytes); ++n)
      16      {
      17        p[n - 8] += p[n];
      18        r += p[n];
      19      }
      20    return r;
      21  }