1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-fre1" } */
       3  
       4  int foo (int i)
       5  {
       6    int k = i + 1;
       7    int j = i + 1;
       8    if (k != j)
       9      k = k + 1;
      10    if (k != j)
      11      k = k + 1;
      12    k = k - i;
      13    return k;
      14  }
      15  
      16  /* We should be able to value-number the final assignment to k to 1.  */
      17  
      18  /* { dg-final { scan-tree-dump "return 1;" "fre1" } } */