Hi! Recently I checked Profile-Guided Optimization (PGO) optimization on many kind of software - the results are available here: https://github.com/zamazan4ik/awesome-pgo/ One of the related to Clazy project result is optimizing LLVM-based projects: https://github.com/llvm/llvm-project/issues/63486 I think the same approach should be applicable to Clazy as well since Clang-based tooling like Clang, Clangd, Clang Tidy is improved by PGO according to my tests. Would be great to see PGO-optimized Clazy in reality. Maybe some kind of build option with PGO will be a good starting point.