[llvm] [InstCombine] Optimize redundant floating point comparisons in `or`/`and` inst's (PR #158097)

[Yingwei Zheng via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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dtcxzyw wrote:

Please add some negative tests (e.g., mismatched variable/mismatched predicate).

https://github.com/llvm/llvm-project/pull/158097