1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-fre1" } */
       3  
       4  int f(int t, int a, int b)
       5  {
       6    int c, d;
       7    if (t)
       8      {
       9        c = a;
      10        d = a;
      11      }
      12    else
      13      {
      14        c = b;
      15        d = b;
      16      }
      17    return c+d;
      18  }
      19  
      20  /* { dg-final { scan-tree-dump-times "PHI" 1 "fre1" } } */