[llvm-branch-commits] [llvm] [KeyInstr][SimplifyCFG] Remap atoms when folding br to common succ into pred (PR #133482)

[Jeremy Morse via llvm-branch-commits]

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

I continued my ramblings inline; I see the potential for some slightly unexpected stepping behaviour, but still strictly better than todays "everything is a breakpoint" approach. I don't think I can put my finger on a specific bad behaviour that might come from this, so LGTM.

(Would still be nice to have the diagram in the test).

https://github.com/llvm/llvm-project/pull/133482