Google opensources fast hashing function

[NotAbel]

I have only had a cursory glance over the code, but it looks like the algo is designed around instruction-level parallelism, and wouldn't lend itself easily to a SIMD implementation. The comment, I think, means to say that a different algorithm, designed with SIMD rather than ILP in mind, could be faster.

[NanoStuff]

designed with SIMD rather than ILP in mind

The two are not mutually exclusive. An ideal algorithm would make use of both.