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def FNSTSW8r : I<0xE0, RawFrm>, DF, Imp<[],[AX]>, // AX = fp flags
II<(ops), "fnstsw">;
def FNSTCW16m : Im16<"fnstcw", 0xD9, MRM7m>; // [mem16] = X87 control world
def FLDCW16m : Im16<"fldcw" , 0xD9, MRM5m>; // X87 control world = [mem16]