[clang] Performance optimizations for function effects (nonblocking attribute etc.) (PR #96844)

[Nikita Popov via cfe-commits]

nikic wrote:

Thanks for following up on this!

For the record, this was the final result: https://llvm-compile-time-tracker.com/compare.php?from=18cdfa72e046a40deeee4372ee98602fd1a65a94&to=0bb68b55715487447ffceaa1ab59f7a0bc8c7979&stat=instructions:u

https://github.com/llvm/llvm-project/pull/96844