1  /* { dg-do compile } */ 
       2  /* { dg-options "-O2 -fdump-tree-fre1" } */
       3  int *p;
       4  int main(int argc, char **argv)
       5  {
       6    int result;
       7    *p = 2;
       8    if (argc)
       9      *p = 2;
      10    result = *p;
      11    return result;
      12  }
      13  /* We should eliminate result = *p by saying it has the value 2.  */
      14  /* { dg-final { scan-tree-dump "return 2;" "fre1"} } */