[SDPatternMatch] Make m_SetCC work like m_ICmp from IR PatternMatch. (#226623) The condition code is stored an operand, but we don't need to expose that to the interface. This adds 2 signatures of m_Setcc, one that takes 2 operands and matches any condition code and one that takes the matched condition code by reference. For m_SpecificCondCode cases, I've added m_SpecificSetCC. Similar changes have been applied to m_SelectCC and m_SelectCCLike. Out of tree targets will need to update to the new interface. Assisted-by: Claude
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