You can simply check the Pull Request on llama.cpp on Github. JohanesGaessler (a core maintainer) has already ran the code and says it's an impressive speed-up.

You can simply check the Pull Request on llama.cpp on Github. JohanesGaessler (a core maintainer) has already ran the code and says it's an impressive speed-up. There isn't a thorough review by any of the core maintainers yet, but this is very likely just exactly what justine says it is; various significant and insignificant speedups.