dump-wave config: how display structs of sv in vcd wave when use gtkwave

[wyz-icer]

Before start

• [X] I have read the RISC-V ISA Manual and this is not a RISC-V ISA question. 我已经阅读过 RISC-V 指令集手册，这不是一个指令集相关的问题。
• [X] I have read the XiangShan Documents. 我已经阅读过香山文档。
• [X] I have searched the previous issues and did not find anything relevant. 我已经搜索过之前的 issue，并没有找到相关的。
• [X] I have searched the previous discussions and did not find anything relevant. 我已经搜索过之前的 discussions，并没有找到相关的。
• [X] I have reviewed the commit messages from the relevant commit history. 我已经浏览过相关的提交历史和提交信息。

Describe the question

when use sv for design， defined some structs var ,
dump-wave in VCD ， When Openning wave in gtkwave， dont display detail info in structs how do you handle ？

[Tang-Haojin]

Thanks for your question. Please describe your question more specifically. For example, what does your sv file look like? What does the gtkwave show? What do you want gtkwave to show? You can also post some picture here.