Evaluate Profile-Guided Optimization (PGO) and LLVM BOLT

[zamazan4ik]

Hi!

Recently I did many Profile-Guided Optimization (PGO) benchmarks on multiple projects (including static analysis tools and compilers like Rustc, Clang, Clangd, Clang Tidy, and many others) - the results are available here. So that's why I think it's worth trying to apply PGO to Ezno.

I can suggest the following things to do:

• Evaluate PGO's applicability to Ezno.
• If PGO helps to achieve better performance - add a note to Ezno's documentation about that. In this case, users and maintainers will be aware of another optimization opportunity for Ezno.
• Provide PGO integration into the build scripts. It can help users and maintainers easily apply PGO for their own workloads.
• Optimize prebuilt Ezno binaries with PGO.

After PGO, I can suggest evaluating LLVM BOLT as an additional optimization step after PGO.

For the Rust projects, I recommend starting with cargo-pgo.

[kaleidawave]

Very cool. This looks interesting if it could easily be added into the CI. Unfortunately don't have time to look into this at the moment as I am prioritising getting the checker to function. Will look into it in the future!