[lldb] [llvm] [mlir] [DebugInfo] Add symbolic branches to DIExpression (PR #210850)

[Eric Christopher via llvm-commits]

echristo wrote:

> Hey @echristo, it seems like the work I'm doing will be overlapping with yours (which makes sense if we are both working on debug-info for GPUs 😄).

:D

> 
> I've been on the DWARF GPU working group since it started meeting, and at AMD we have a working implementation of much of DWARF6 that enables debugging (some) optimized code on AMDGPUs today. It is a more radical departure from the current approach, which is why it is not (yet) upstream. In the process of trying to get it to a state where it can replace the current upstream approach I ended up on a bit of a tangent, and I'm exploring an approach that borrows from GCC's design. I don't quite have a fully-baked design to pick apart yet, but I hope to relatively soon.

Excellent. Looking forward to it!

> 
> Anyway, I would be very interested in reviewing debug-info PRs, RFCs, etc. so if you think of it please add me as a reviewer or ping me!

Sweet. I have a bunch of patches that I've been playing with and I'll add you to those and the RFC for DIExpression/procedures here when I send that out shortly. :)

https://github.com/llvm/llvm-project/pull/210850