[New mingw-w64-clang version] clang: Build with PGO

[github-actions]

clang: Build with PGO

msys2/MINGW-packages@4dd91d1

[dscho]

This seems relevant: https://llvm.org/docs/HowToBuildWithPGO.html claims that this can reduce compile times by up to 20%.

However, looking at the commit, I gather that it will conflict (this change is adjacent to this change). @rimrul do you want to take a crack at it?

[rimrul]

/open pr

The workflow run was started

[rimrul]

However, looking at the commit, I gather that it will conflict

That's a neat side effect of how update-clang-from-msys2.sh is implemented: sed knows no conflicts.

I am slightly confused why it didn't change Native to host here though. git-for-windows/MINGW-packages@547e0b3#diff-125e46f56c15d81bb2f9210bdcc4959baf788e9db4c0acfbff0148bf4416815dR218

Edit: I'm not confused anymore, it expects double quotes around the list of targets.