Manually add function to the profile for wasm-split

[mmomtchev]

Currently there does not seem to be any way to manually add select functions to the profile used for wasm-split?

In my case, I have environment finalizers that run when the environment is destroyed and which cannot be called before write_profile.

One solution would be to spawn the profiled code in a worker_thread - however my module does not use SharedArrayBuffer and I want to keep it this way.

Another solution would be to use profile-print and to generate a manifest to feed into multi-split - however multi-split seems to be slightly incompatible with split and the emscripten loader does not support it.

Has anyone done this before with the existing tools?

[mmomtchev]

I am wiling to contribute a PR for this problem, how about supporting keep-func with profile?

[mmomtchev]

Ok, I found a way to do this, use print-profile, then extract the list of the functions from the output, add the missing functions, and pass this new file with --keep-funcs @...

[tlively]

Nice workaround! If you still want do make a PR so you don't need that workaround, supporting --keep-funcs with --profile makes sense to me.