riscv.AAMOMAXW, riscv.AAMOMAXD, riscv.AAMOMAXUW, riscv.AAMOMAXUD:
		return true
	}
	return false
}

// IsRISCV64VTypeI reports whether op is a vtype immediate instruction that
// requires special handling.
func IsRISCV64VTypeI(op obj.As) bool {
	return op == riscv.AVSETVLI || op == riscv.AVSETIVLI
}

// IsRISCV64CSRO reports whether the op is an instruction that uses

			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])