1  /* { dg-do compile } */
       2  /* { dg-options "-O1" } */
       3  
       4  /* This assignment might be implemented with a mem copy from the
       5     literal pool with two BLKmode operands.  This produced an ICE on S/390
       6     since simplify_subreg was called for such a BLKmode operand.  */
       7  
       8  struct a
       9  {
      10    unsigned long b:24;
      11  };
      12  
      13  void
      14  foo (struct a *t)
      15  {
      16    t->b = 32;
      17  }