How Many LUTs Are Required for the FPGA Minimal System of the Xiangshan Processor to Operate Normally?

[Stars-Collector]

Before start

• 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。
• I have read the XiangShan Documents. 我已经阅读过香山文档。
• 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。
• 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。
• 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

官方文档没有给出说明

[TRANSLATION]
There are no explanations in the official document.

[Tang-Haojin]

Please refer to #1413 (comment). For Kunminghu, we need even more LUT resource.