[llvm] [InstCombine] fold icmp of select with constants and invertible op (PR #147182)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw requested changes to this pull request.

We can simply extend `foldICmpEqualityWithOffset` to handle the motivating case.

https://github.com/llvm/llvm-project/pull/147182