1  /* { dg-do compile } */
       2  /* { dg-options "-O1 -fdump-tree-optimized" } */
       3  
       4  _Bool f1(_Bool x)
       5  {
       6    return !!x;
       7  }
       8  
       9  /* There should be no != 0 which is produced by the front-end as
      10     bool_var != 0 is the same as bool_var. */
      11  /* { dg-final { scan-tree-dump-times "!= 0" 0 "optimized"} } */
      12  
      13  /* There should be no subfe for powerpc.  Check if we actually optimized
      14     away the comparison.  */
      15  /* { dg-final { scan-assembler-times "subfe" 0 { target powerpc*-*-* } } } */
      16