[lld] [LLD][COFF] Use parentName for import files in toString. (PR #106104)

[Jacek Caban via llvm-commits]

cjacek wrote:

Inspired by @zmodem's comment in #102738. We currently explicitly ignore parentName for import files in toString, which makes error/warning messages less expressive than they would otherwise be.

I tracked the check in toString down to https://reviews.llvm.org/D54802. It looks like this commit set ParentName on import files, so I guess the change was about preserving previous behaviour. However, using it seems reasonable to me. It looks like toString is already used only by error, warnings and logs, so it seems to be a good fit.


https://github.com/llvm/llvm-project/pull/106104