[Gtkwave-users] Request: better struct, union and enum viewing support

[Sergi G. <xer...@gm...>]

Hi! I've been using Verilator + GTKWave for a few months and currently I'm
trying to add a FST backend to Verilator so we can make it generate more
types of declarations (structs, enums, unions, etc).

It would be nice if GTKWave could show types with other sub-types inside
(such as structs or unions) as a tree on the Signals panel, just as
Modelsim does (and also for arrays). See [1] (ex_mem_reg is a struct with
pc, instr, etc. inside).

Another very nice feature would be to show a mouseover window/popup with
the list of all the struct/union members and their values when hovering
over such types, as seen in [2]. In the image, the instr field of the
ex_mem_reg struct is an union, that's why a list of different
decompositions of the value are shown, maybe that's a bit too much for now,
and this could be implemented in the future.

And finally, another feature would be to print enum names instead (or also
with) their raw values, as can be seen in [3].

[1]: https://i.imgur.com/m1t0WEr.png
[2]: https://i.imgur.com/zYu1gPr.png
[3]: https://i.imgur.com/457x6MT.png