[clang] [llvm] [DebugInfo] Place local ODR-uniqued types in decl DISubprograms (PR #119001)

[David Blaikie via llvm-commits]

dwblaikie wrote:

yeah, I worry this feels all a bit vague (that some things "suggest" other things, that root problems "seem to be" (& some fairly broad descriptions of what they seem to be) - not to nitpick your language, and I appreciate the clarity of the uncertainty, to be sure - but the uncertainty is a bit concerning)

Might help to have some specific/narrow example(s) to walk through & discuss how we think they should work?

https://github.com/llvm/llvm-project/pull/119001