[clang] [lldb] [Clang] Improve Sema diagnostic performance for __builtin_counted_by_ref (PR #116719)

[Nikita Popov via cfe-commits]

nikic wrote:

> Is there a branch up for this on https://llvm-compile-time-tracker.com/ so that we've verified that this actually improves performance?

Compile-time: https://llvm-compile-time-tracker.com/compare.php?from=105b7803ea22823a2fca2a82ee843d0884e9cbf3&to=dcb3e2b6b4333556fbfa3d7a5a45c145972b466f&stat=instructions:u Yes, this does recover the regression.

https://github.com/llvm/llvm-project/pull/116719