[clang-tools-extra] [llvm] [clang] [compiler-rt] Bfi precision (PR #66285)

[Matthias Braun via cfe-commits]

MatzeB wrote:

Do you just see regression or also some wins? I don't know whether this is all stems from the `isColdCallSite` behavior, and not just the usual some things get better some things get worse situation you can easily have when inlining changes?

https://github.com/llvm/llvm-project/pull/66285