[clang] [lld] [llvm] Integrated Distributed ThinLTO (DTLTO): Initial support (PR #126654)

[Teresa Johnson via cfe-commits]

teresajohnson wrote:

> > Thanks for sending this for review! I've only just skimmed the PR so far, and need to dig more into it. However, it is massive. It's nice to see how it all fits together, but for the purpose of reviewing and upstreaming, could you split it up into multiple PRs? I.e. the LLVM only changes (with your llvm-lto2 tests), then the lld changes, followed by the clang driver changes/tests?
> 
> Apologies. This was about as small as I could get the change whilst having something functional/useful. I will split up the change as suggested and open a new PR. Meanwhile, I plan to leave this open for design comments - please let me know if that is acceptable?

No worries and as mentioned it is good to see the full picture. Just easier to review in smaller pieces. That sounds like a great plan, thanks!

https://github.com/llvm/llvm-project/pull/126654