# Optimize this attribute access
	# * `mproperty` The attribute which is accessed
	# * `recv` The receiver (The object) of the access
	protected fun optimize(mproperty: MAttribute, recv: MutableInstance)
	do
		var position = recv.mtype.as(MClassType).mclass.get_position_attributes(mproperty.intro_mclassdef.mclass)
		if position > 0 then
			# if this attribute class has an unique position for this receiver, then use direct access
			offset = position + mproperty.offset
			status = 1
		else
			# Otherwise, perfect hashing must be used
			id = mproperty.intro_mclassdef.mclass.vtable.id
			offset = mproperty.offset
			status = 2
		end
	end