[llvm] Solve llvm-dwp overflow problem, skipped over 4GB '.dwo' files (PR #71902)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Probably need some terminology to disambiguate between the current default "stop" behavior which is to abort/error/fail, and the new flag behavior of "bail out and emit a best-effort DWP".

(that said, I'd still ask whether this is the right tool to add at all - I know it's a complicated space for all of us hitting these limits, so I'm not ruling anything out for sure, but trying to reduce all these different slices as much as we can - could you build less code in your situation? Or modify your build system to drop certain debug info to keep the dwp under these limits?)

https://github.com/llvm/llvm-project/pull/71902