1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-dce3" } */
       3  
       4  /* We should notice constantness of this function. */
       5  static int __attribute__((noinline)) t(int a) 
       6  {
       7  	return a+1;
       8  }
       9  void q(void)
      10  {
      11    int i = t(1);
      12    if (!i)
      13      i = t(1);
      14  }
      15  /* There should be no IF conditionals.  */
      16  /* { dg-final { scan-tree-dump-times "if " 0 "dce3"} } */