[lld] [LLD] Tombstone LocalTU entry in .debug_names (PR #70701)

[Fangrui Song via llvm-commits]

https://github.com/MaskRay commented:

Code-wise this is close, but I want to see #68131 landed so that I can play with .debug_names tombstone values.

My previous comment still applies: the description should describe the choice of UINT32_MAX and UINT64_MAX, so that a curious reader doesn't have to read several external links to understand the choice.

https://github.com/llvm/llvm-project/pull/70701