message: blockfilter: Optimization on compilers with int128 support.
diff: @@ -52,6 +52,9 @@ static uint64_t GolombRiceDecode(BitStreamReader<IStream>& bitreader, uint8_t P)
  // See: https://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction/
  static uint64_t MapIntoRange(uint64_t x, uint64_t n)
  {
  +#ifdef __SIZEOF_INT128__
  + return (static_cast<unsigned __int128>(x) * static_cast<unsigned __int128>(n)) >> 64;
  +#else
  // To perform the calculation on 64-bit numbers without losing the
  // result to overflow, split the numbers into the most significant and
  // least significant 32 bits and perform multiplication piece-wise.
  @@ -70,6 +73,7 @@ static uint64_t MapIntoRange(uint64_t x, uint64_t n)
  uint64_t mid34 = (bd >> 32) + (bc & 0xFFFFFFFF) + (ad & 0xFFFFFFFF);
  uint64_t upper64 = ac + (bc >> 32) + (ad >> 32) + (mid34 >> 32);
  return upper64;
  +#endif
  }
  uint64_t GCSFilter::HashToRange(const Element& element) const
  