[llvm] [AMDGPU] Fix incorrect stepping in gdb for amdgcn.end.cf intrinsic. (PR #83010)

[Jeremy Morse via llvm-commits]

jmorse wrote:

Alas, I don't think I'm rated to review this -- I was likely the last person to touch that line, but due to unrelated instruction-insertion maintenance for the RemoveDIs project.

In general, there's advice on maintaining source locations here: https://llvm.org/docs/HowToUpdateDebugInfo.html . We also usually try to avoid source-locations appearing on paths through the function where they didn't previously appear before optimisation.

https://github.com/llvm/llvm-project/pull/83010