[llvm] [ConstraintElim] Extend `checkOrAndOpImpliedByOther` to handle and/or expr trees. (PR #117123)

[Nikita Popov via llvm-commits]

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nikic wrote:

unreachable-bb.ll is not really what is pertinent here, this should be part of and-implied-by-operands.ll.

https://github.com/llvm/llvm-project/pull/117123