1  /* { dg-do compile } */
       2  /* { dg-options "-O -floop-nest-optimize -fno-tree-loop-im" } */
       3  
       4  int mg, et;
       5  
       6  void
       7  s5 (int is)
       8  {
       9    if (is == 0)
      10      {
      11  g6:
      12        ++is;
      13      }
      14  
      15    while (mg < 1)
      16      {
      17        while (et < 1)
      18  	{
      19  	  if (is == 0)
      20  	    return;
      21  
      22  	  ++et;
      23  	}
      24  
      25        while (mg < 1)
      26  	++mg;
      27      }
      28  
      29    goto g6;
      30  }
      31