[0] https://news.ycombinator.com/user?id=vient
#pragma clang loop vectorize(enable) #pragma clang loop interleave(enable) for (; offset < length; offset += 4) { const auto x = ((uint32_t\*)start)[offset / 4]; count += ((x & 0xFF) == 0x7F); count += ((x & 0xFF00) == 0x7F00); count += ((x & 0xFF0000) == 0x7F0000); count += ((x & 0xFF000000) == 0x7F000000); }
[0] https://news.ycombinator.com/user?id=vient