This is about a decade old, I think. With a substantial optimisation suite added to ocamlopt since, some of it will be out of date. The advice on inlining in particular is obsolete.
Hm, could you say why you think that? Looking at the github history it's hard to tell. The earliest history I can find for this page is from 2013[0], but it seems to be pretty clearly a transition and not the original writing of it. However, it's the only thing I can find in terms of aging the document.
Even so, it still contains lots of helpful explanations and starting points for those who haven't learned to eat assembly for breakfast yet. Current OCaml docs and own exploration should do the rest.
