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MADD/MSUB/NMADD/NMSUB.PS and MOVN/MOVZ/MOVF/MOVT.PS. This llvm-mc only knows the .S/.D variants, so these are derived from the llvm-verified single forms by switching the data-format field to PS (COP1X FMA fmt is bits 2:0, S=0 -> PS=6; COP1 conditional-move fmt is bits 25:21, S=16 -> PS=22), per the MIPS64 manual. Same operand slots/masks. Decode-clean and 281 tests green.