[llvm-bugs] [Bug 233383] [clang] [InstCombine] foldSPFofSPF folds MAX(MAX(A,B),B) → MAX(A,B) for FP select patterns with different NaN behaviour - clamp(NaN) returns NaN instead of the bound (miscompile from plain C, -O1+)

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Mon Oct 19 02:28:42 PDT 2026


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