Hi!

Profile-Guided Optimization (PGO) is already enabled for several packages in the MinGW repo: Clang, GCC. Since PGO improves performance, I suggest enabling PGO for the following packages as well:

• Rust: Rust Lang blog
• Julia: GitHub PR
• SWI-Prolog: GitHub comment
• Go: Go compiler performance numbers

Probably there are other packages in the MinGW repo that can benefit from PGO. You can find the existing benchmarks for other projects here. Maybe we even want to integrate PGO into the packages like Ruby, Perl, and other similar packages.