[llvm] [AIX] Fix dwarf testcases on AIX (PR #163822)

[Michael Buch via llvm-commits]

https://github.com/Michael137 commented:

Seems reasonable. I disnt adjust all the `getUnversionedName` calls because it touched code i wasnt familiar with and ot wasnt on the critical path.

Could you post specific error youre seeing into the PR description. For future readers (and my own curiosity)

https://github.com/llvm/llvm-project/pull/163822