llvm-project

e51f25a3 - [SDAG] Combine select into ABD?, for const (#173581)

[SDAG] Combine select into ABD?, for const (#173581) (select (setcc ...) (sub a, b) (sub b, a)) When b is const, the `sub a, b` becomes `add a, -b` which we take care of in this patch with the m_SpecificNeg() matcher.