Re：Re：Re：Re：[PATCH] RISC-V: Add tuning info and vector cost model for xt-c9501fdvt

[Wang Yaduo]

Hi Jeff,
Thanks a lot for the detailed walkthrough! The methodology of hunting for 
suboptimal czero pairs is really insightful. The examples from deepsjeng and 
the references to PR 124955 and PR 124766 give me a clear picture of what to 
look for.
We actually have a similar QEMU plugin on our side as well, so I'll try 
applying your methodology and see if I can spot new optimization opportunities. 
Really appreciate the guidance!
Best regards,
Yaduo