1  /* PR tree-optimization/98474 */
       2  
       3  #ifdef __SIZEOF_INT128__
       4  typedef __uint128_t T;
       5  #define N (__SIZEOF_INT128__ * __CHAR_BIT__ / 2)
       6  #else
       7  typedef unsigned long long T;
       8  #define N (__SIZEOF_LONG_LONG__ * __CHAR_BIT__ / 2)
       9  #endif
      10  
      11  __attribute__ ((noipa)) void
      12  foo (T *x)
      13  {
      14    *x += ((T) 1) << (N + 1);
      15  }
      16  
      17  int
      18  main ()
      19  {
      20    T a = ((T) 1) << (N + 1);
      21    T b = a;
      22    T n;
      23    foo (&b);
      24    n = b;
      25    while (n >= a)
      26      n -= a;
      27    if ((int) (n >> N) != 0)
      28      __builtin_abort ();
      29    return 0;
      30  }