[Bug target/110665] RISC-V do not preserve vector registers in interrupt handler

[lehua.ding at rivai dot ai via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110665

--- Comment #1 from Lehua Ding <lehua.ding at rivai dot ai> ---
If it's a problem, I'm willing to fix it.