Mouath,
There is no feature in LabVIEW to export your VIs as VHDL files. You are able to include your own HDL in your LabVIEW VI (using the HDL node). I encourage you to provide your feedback related to this issue at <a href="
http://www.ni.com/contact" target="_blank">
ni.com/contact</a>. The product suggestion submitted are taken seriously and reviewed by National Instruments.
Cheers,
JonahApplications Engineer
National Instruments