1  #ifdef __UINT64_TYPE__
       2  typedef __UINT64_TYPE__ uint64_t;
       3  #else
       4  typedef unsigned long long uint64_t;
       5  #endif
       6  
       7  #ifndef __SIZEOF_INT128__
       8  #define __int128 long long
       9  #endif
      10  
      11  /* Some version of bswap optimization would ICE when analyzing a mask constant
      12     too big for an uint64_t variable (PR210931).  */
      13  
      14  __attribute__ ((noinline, noclone)) uint64_t
      15  uint128_central_bitsi_ior (unsigned __int128 in1, uint64_t in2)
      16  {
      17    __int128 mask = (__int128)0xffff << 56;
      18    return ((in1 & mask) >> 56) | in2;
      19  }
      20  
      21  int
      22  main(int argc, char **argv)
      23  {
      24    __int128 in = 1;
      25  #ifdef __SIZEOF_INT128__
      26    in <<= 64;
      27  #endif
      28    if (sizeof (uint64_t) * __CHAR_BIT__ != 64)
      29      return 0;
      30    if (sizeof (unsigned __int128) * __CHAR_BIT__ != 128)
      31      return 0;
      32    if (uint128_central_bitsi_ior (in, 2) != 0x102)
      33      __builtin_abort ();
      34    return 0;
      35  }