[rurban]

The only difference between the computed goto and the switch is that the computed goto leaves out the initial range check. But are doing simple and costly indirect jumps.

Much better is to keep the ops small (16bit in this case which is the best I've seen, lua/luajit/chez have 32bit, worse languages 3-5 words) to have much more ops in the icache, and to pass around the ptr to the next op, best if relative. Easy with a small jit. This ptr will be prefetched, which is not possible with those indirect jumps, from cgo or switch.