1  /* { dg-do compile { target int128 } } */
       2  /* { dg-options "-O2" } */
       3  unsigned __int128 m;
       4  
       5  unsigned __int128 foo(unsigned __int128 x, unsigned long long y)
       6  {
       7      return x - y;
       8  }
       9  
      10  void bar(unsigned __int128 x, unsigned long long y)
      11  {
      12      m = x - y;
      13  }
      14  
      15  void baz(unsigned long long y)
      16  {
      17      m -= y;
      18  }
      19  
      20  /* { dg-final { scan-assembler-not "xor" } } */