GHDL for VHDL simulation?

Hi folks,

Does anybody have any experience with GHDL? For those who don't know,
it's a VHDL compiler based on the gcc (GNU Compiler Collection) framework.

http://ghdl.free.fr

Basically it translates VHDL to Ada, then compiles it using gcc's Ada
support. It's free, unlike modelsim et al. It can export the VCD file
format for viewing in various wave viewers and so on.

I've downloaded it and compiled trivial examples (adders etc), and it
seems to work OK. Just wondering if any body has any deeper experience
or comments on it?

Thanks,

John

John Williams