[llvm] [LangRef] Clarify definition of fragments and debug intrinsics (PR #82019)

[Orlando Cazalet-Hyams via llvm-commits]

https://github.com/OCHyams commented:

> I tried to include more kinds of objects under the umbrella term
"variable", but I'm not particularly happy with how circular it sounds.
Any more thoughts on better approaches are appreciated.

IMO what you have now is good.

This all LGTM, thank you for working on this!

I think everyone's previous concerns have been addressed, but I'll hold off on Accepting to give the other reviewers a chance to have another look at this.

https://github.com/llvm/llvm-project/pull/82019