1  /* PR tree-optimization/36508 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O -ftree-pre" } */
       4  
       5  void
       6  foo (short *sp)
       7  {
       8    int k;
       9    k = 1;
      10  #define SP0 *sp++ = 1;
      11    while (1)
      12      {
      13        if (k > 6)
      14  	break;
      15        SP0
      16        k++;
      17      }
      18    k = 1;
      19    while (1)
      20      {
      21        if (k > 6)
      22  	break;
      23        SP0
      24        k++;
      25      }
      26  #define SP1 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0
      27  #define SP2 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1
      28    SP2
      29  }