Code in LEGv8 does not calculate correct maximum value among three values.Do not use MOV,CMP
SUB X25,X19,X20 CBNZ X25, 11 SUB X26, X19, X21 CBNZ X26, 12 ADD X24,X24,X19 B done 11: SUB X26,X20,X21 CBNZ X26, 12 ADD X24,X24,X20 B done 12: ADD X24,X24,X21 B done done: