Nice talk about Go PGO. What is the state in Julia?

[nsajko]

@Dan

What is the state of PGO in Julia?

Related thread:

Has PGO for (re)compiling methods been considered?

It just crossed my mind that it would be very nice if Julia provided some kind of profile-guided optimization (PGO) API. Something like: The user gathers a performance profile for some of their Julia code The user is now able to request a recompilation of their Julia code, feeding the profile to the Julia compiler to enable better optimizations, like, for example, control height reduction or hot-cold splitting. Step 2 could look like this: pgo_anonymous_function = recompile_with_pgo(m…

So there’s not much activity in this space, but see Tim Holy’s comment about profile-guided despecialization for a limited example.