[llvm] [InstCombine] Fold `trunc nuw/nsw (x xor y) to i1` to `x != y` (PR #90408)

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Wed May 8 16:54:52 PDT 2024

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alexfh wrote:

False alarm, it seems. At least, we found UB in the code, fixing which resolves the problem. Apologies for the noise.

https://github.com/llvm/llvm-project/pull/90408

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