[llvm] [llvm] annotate recently added interfaces for DLL export (PR #150101)

[Andrew Rogers via llvm-commits]

andrurogerz wrote:

> If finding where it is needed is being done via an automatic system already, would it be possible to fully automate it, such that developers don't have to care about whether they need to add the tag or not (i.e. the automation will take care of it)?

The plan is for a CI job to find and emits fixes-- it just hasn't been completed yet, #128370

https://github.com/llvm/llvm-project/pull/150101