[llvm] [llvm] annotate interfaces in llvm/Support for DLL export (PR #136014)

[Vassil Vassilev via llvm-commits]

vgvassilev wrote:

Can we mention https://github.com/llvm/llvm-project/issues/109483 in the PR descriptions of that work?

https://github.com/llvm/llvm-project/pull/136014