Reply To: Prediction

Perceptive. Some concrete Mills may have deferred control flow (e.g. the delay on the br op) and this may need careful simulator profiling for the case of call too.

the actual function that will be called is hoisted all the way up to an input parameter, which again would be an ideal for software injecting “upcoming|next EBB” hints into the prefetcher.

Exactly.

Luckily this hoisting would happen in the specializer (or jit), which can use deferred calls or other hints if the concrete Mill supports it. It is nothing a conventional compiler generating the flow graph need concern itself with.