1  /* { dg-do compile } */
       2  /* { dg-options "-O3 -fno-tree-vectorize -fdisable-tree-sccp -fdump-tree-cunroll-details" } */
       3  
       4  int bits;
       5  unsigned int size;
       6  int max_code;
       7  
       8  void
       9  test ()
      10  {
      11   int code = 0;
      12  
      13   while (code < max_code)
      14     code |= ((unsigned int) (size >> (--bits)));
      15  
      16   while (bits < (unsigned int)25)
      17     bits += 8;
      18  }
      19  
      20  /* { dg-final { scan-tree-dump "Loop 2 iterates at most 3 times" "cunroll"} } */