Notably this is on an arm processor (aarch64) and they don't say specifically which one. I've seen extreme differences in jump table performance between x86/amd

Notably this is on an arm processor (aarch64) and they don't say specifically which one. I've seen extreme differences in jump table performance between x86/amd64 cpus. Specifically I remember seeing a big speedup on similar code with either Haswell or Skylake that I pinned down to a jump table suddenly performing blazing fast compared to the previous architecture. Which actually led me to implement the same thing here (avoid generating the jump table) so it would perform better on the earlier processors. This was code that was, basically, stream parsing varint values so the code pattern immediately triggered that core memory!