1  /* { dg-do compile } */
       2  /* { dg-options "-O3 -fwhole-program -march=x86-64" } */
       3  
       4  int *a;
       5  unsigned int b;
       6  
       7  void fn2 ()
       8  {
       9    int t[9];
      10    for (; b; b++)
      11      *a ^= (~t[b] != t[b]);
      12  }
      13  
      14  int fn1 ()
      15  {
      16    fn2 (); 
      17    return 0; 
      18  }
      19  
      20  int main ()
      21  {
      22    fn1 (); 
      23    return 0;
      24  }