1  /* { dg-do compile } */
       2  /* { dg-options "-O1 -fdump-tree-optimized" } */
       3  
       4  int f(int a, int b)
       5  {
       6    if (a == 0)
       7     return 0;
       8    if (a != b)
       9     return a;
      10   return a;
      11  }
      12  
      13  /* There should be no ifs as the PHI arguments, we did not
      14     optimize this before because PHI-OPT did not look at 
      15     PHIs which have more than two arguments.  */
      16  /* { dg-final { scan-tree-dump-times "if" 0 "optimized"} } */