1  /* { dg-do compile } */
       2  /* { dg-options "-Os -fbranch-count-reg" } */
       3  
       4  /* This caused an assertion within arc_loop_hazard.  */
       5  
       6  unsigned a, b;
       7  
       8  long fn1()
       9  {
      10    long c = 1, d = 0;
      11    while (a && c && b)
      12      c <<= 1;
      13    while (c)
      14      d |= c;
      15    return d;
      16  }