1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-fre1-details" } */
       3  
       4  extern int opening;
       5  extern int middle_game;
       6  int s;
       7  extern int d[1];
       8  void PreEvaluate(int wtm)
       9  {
      10    int i, j;
      11    if (opening) {
      12        d[0]=1;
      13    }
      14    else if (middle_game) {
      15        d[0]=-1;
      16    }
      17    if (4 != opening) {
      18        return;
      19    }
      20    s = 1;
      21  }
      22  
      23  /* We should be able to CSE the second load of opening.  */
      24  
      25  /* { dg-final { scan-tree-dump "Replaced opening" "fre1" } } */