[llvm] [DebugInfo][BPF] Add 'annotations' field for DIBasicType & DISubroutineType (PR #91422)

[via llvm-commits]

eddyz87 wrote:

> It looks like this adds some non-trivial overhead to LTO + debuginfo builds: http://llvm-compile-time-tracker.com/compare.php?from=d95b82c49aef0223bcc03ff5a9163e70037c82be&to=3ca17443ef4af21bdb1f3b4fbcfff672cbc6176c&stat=instructions:u

Oh... I'll try to reproduce locally, but that is bad. The commit seems as vanilla as it gets, if the overhead is caused by an extra action in constructor I'm not sure about remedial options.

https://github.com/llvm/llvm-project/pull/91422