1  /* { dg-do run { target { powerpc*-*-* && lp64 } } } */
       2  /* { dg-options "-O2 -fno-inline" } */
       3  
       4  union U {
       5    __int128 i128;
       6    struct {
       7      long l1;
       8      long l2;
       9    } s;
      10  };
      11  
      12  union U u1,u2;
      13  
      14  __int128
      15  create_128 (long most_sig, long least_sig)
      16  {
      17    union U u;
      18  
      19  #if __LITTLE_ENDIAN__
      20    u.s.l1 = least_sig;
      21    u.s.l2 = most_sig;
      22  #else
      23    u.s.l1 = most_sig;
      24    u.s.l2 = least_sig;
      25  #endif
      26    return u.i128;
      27  }
      28  
      29  long most_sig (union U * u)
      30  {
      31  #if __LITTLE_ENDIAN__
      32    return (*u).s.l2;
      33  #else
      34    return (*u).s.l1;
      35  #endif
      36  }
      37  
      38  long least_sig (union U * u)
      39  {
      40  #if __LITTLE_ENDIAN__
      41    return (*u).s.l1;
      42  #else
      43    return (*u).s.l2;
      44  #endif
      45  }
      46  
      47  __int128
      48  add_128 (__int128 *ptr, __int128 val)
      49  {
      50  	return (*ptr + val);
      51  }
      52  
      53  __int128
      54  sub_128 (__int128 *ptr, __int128 val)
      55  {
      56  	return (*ptr - val);
      57  }
      58  
      59  int
      60  main (void)
      61  {
      62    /* Do a simple add/sub to make sure carry is happening between the dwords
      63       and that dwords are in correct endian order. */
      64    u1.i128 = create_128 (1, -1);
      65    u2.i128 = add_128 (&u1.i128, 1);
      66    if ((most_sig (&u2) != 2) || (least_sig (&u2) != 0))
      67      __builtin_abort ();
      68    u2.i128 = sub_128 (&u2.i128, 1);
      69    if ((most_sig (&u2) != 1) || (least_sig (&u2) != -1))
      70      __builtin_abort ();
      71    return 0;
      72  }
      73