Question: be less restrictive with type casting?

[numero-744]

I have found this: openhwgroup/cva6#2824

To put it short, the standard seems to prevent things such as Cfg.Len'(value) in the syntax.
(At least I have not found where it is allowed.)
The type can be 42, unsigned, logic, my_t, my_pkg::my_t but not Cfg.Len.
(This is only a syntax issue, Cfg is a parameter so semantically, it is equivalent to typedef logic [Cfg.Len-1:0] my_t; then my_t'(value)).

However, Verilator, Verible, Questa, Vcs, Vivado (and probably others) allow Cfg.Len'(value).

Should we support this syntax as well?

[gmlarumbe]

Seems sensible to me trying to support something that is already supported by most tools. Probably can be added without too much effort.

Thanks for taking the time to help in the development of the tool :)

[gmlarumbe]

Should be supported after 44f8228.

Feel free to reopen if I missed something.

[numero-744]

Thanks again! This change significantly reduced the number of errors while parsing the whole CVA6 core/ directory 😃