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

[via llvm-commits]

eddyz87 wrote:

Hi @dwblaikie, @yonghong-song,

Could you please take a look at this pull request?
This is a part of the old discussion:
- https://reviews.llvm.org/D143966 -> https://github.com/llvm/llvm-project/pull/91422
- https://reviews.llvm.org/D143967 -> https://github.com/llvm/llvm-project/pull/91423
- https://reviews.llvm.org/D145891 -> https://github.com/llvm/llvm-project/pull/91424

But because of the state of the Linux Kernel tooling (the main client for this feature is the kernel) I had to add a hidden switch in the second patch of the series (compared to agreed upon logic).

@dafaust, @jemarch, @4ast, fyi.

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