[lld] [llvm] [DTLTO][LLD][ELF] Add support for Integrated Distributed ThinLTO (PR #142757)

[via llvm-commits]

bd1976bris wrote:

@MaskRay would you be able to look at this patch? It follows what was agreed in #126654 and #127749.

If it helps, I can remove support for thin archive bitcode members in this patch? We’re likely to revisit and revise this area anyway when we add support for non-thin archives and DTLTO. Let me know what you prefer. Thanks!

https://github.com/llvm/llvm-project/pull/142757