>>1
Fuerst Hash.
World's fastest 64-bit key hash function for 32-bit and 64-bit x86, faster than the iSCSI CRC32/64 instructions built into modern Intel processors, and with better randomness and less collisions. Faster than all FNV1A variants, xxhash, MurmurHash, SuperFastHash, etc.
https://github.com/upcaste/upcaste/blob/master/src/upcore/src/cstring/gas/i686/memhash.s
https://github.com/upcaste/upcaste/blob/master/src/upcore/src/cstring/gas/x86_64/memhash.s
Article explaining how it works:
http://locklessinc.com/articles/fast_hash/
P.S. Don't tell Jewgle or Shekelsoft, this shit is too hot for them.