1  /* { dg-do compile } */
       2  /* { dg-options "-O -ftrapping-math -fdump-tree-optimized" } */
       3  
       4  int f (double d)
       5  {
       6    return !__builtin_isnan (d);
       7  }
       8  
       9  /* { dg-final { scan-tree-dump " ord " "optimized" } } */