[llvm] [llvm] DLLExport public methods from SmallVector (PR #127850)

[Saleem Abdulrasool via llvm-commits]

compnerd wrote:

> @compnerd will do. However, I do think changes that are not simply adding annotations (such as #127722) should probably be reviewed and merged separately.

Yes, I think that is fair - that is a subtle bug fix that is beyond the scope of annotating the ABI surface.

https://github.com/llvm/llvm-project/pull/127850