[llvm] Add functions peekNextN(unsigned) and assignNewExpr(ArrayRef<uint64_t>) to DIExpressionCursor (PR #71717)

[Jeremy Morse via llvm-commits]

https://github.com/jmorse approved this pull request.

LGTM, I think we usually desire a test for each change, but I imagine there are tests coming later in the patch series. NB, I read the intermediate commit 05f6b6fd839 rather than looking at the github "Files Changes" view, seeing how we can't have nice things like stacked reviews any more.

https://github.com/llvm/llvm-project/pull/71717