1  /* { dg-do compile } */
       2  /* { dg-options "-O1 -fdump-tree-optimized" } */
       3  
       4  _Bool t();
       5  _Bool t1();
       6  
       7  _Bool f1()
       8  {
       9    return t() && t1();
      10  }
      11  
      12  /* There should be only one if, the outer one; the inner one
      13     should have been changed to straight line code with the
      14     value of b (except that we don't fold ! (b != 0) into b
      15     which means that we miss a sib calling opportunity).  */
      16  /* { dg-final { scan-tree-dump-times "if " 1 "optimized"} } */