1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-fre1" } */
       3  
       4  int foo (int i)
       5  {
       6    if (i)
       7      {
       8        if (i)
       9  	return 0;
      10        else
      11  	return 1;
      12      }
      13    return 0;
      14  }
      15  
      16  /* { dg-final { scan-tree-dump "return 0;" "fre1" } } */