[llvm] Strip the full path from __FILE__ in the LDBG macro and keep only the filename (PR #150677)

[Mehdi Amini via llvm-commits]

joker-eph wrote:

> I think this completely breaks clang module build since a different macro for each source file means the modules are never shared anymore.

I'm not sure what does that mean, can you explain a bit more?

> Also, why we don't use __FILE_NAME__ instead? That is a clang extension but we could check and use that before passing the SHORT_FILE macro.

I could work something out that would only work with gcc and clang, and let MSVC take the slow path.


https://github.com/llvm/llvm-project/pull/150677