[llvm] [InstCombine] Fold comparisons contradicted by dominating expression conditions (PR #227030)

[Andreas Jonson via llvm-commits]

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andjo403 wrote:

no need for the `|| !isa<ConstantInt>(Y)` due to the `if (!match(Y, m_APInt(C)))`

https://github.com/llvm/llvm-project/pull/227030