[llvm] [InstCombine] Fix fail to fold (A >> C1) Pred C2 if shr is used multple times #83430 (PR #83563)

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SahilPatidar wrote:

Since matchSelectPattern is failing to check for the minimax pattern, it raises the question of whether the issue lies with matchSelectPattern or if there is a need to implement additional functionality to correctly identify the minimax pattern. Could you provide some guidance or hints to help me begin investigating this matter?

https://github.com/llvm/llvm-project/pull/83563