prog.Reg = p.getRegister(prog, op, &a[1])
			prog.AddRestSourceArgs([]obj.Addr{a[2], a[3], a[4]})
			prog.To = a[5]
			break
		}
		if p.arch.Family == sys.RISCV64 && arch.IsRISCV64VTypeI(op) {
			prog.From = a[0]
			vsew := p.getSpecial(prog, op, &a[1])
			vlmul := p.getSpecial(prog, op, &a[2])
			vtail := p.getSpecial(prog, op, &a[3])
			vmask := p.getSpecial(prog, op, &a[4])