[Bug target/121910] RISC-V: dynamic lmul choosing wrong vector mode

[juzhe.zhong at rivai dot ai via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121910

--- Comment #8 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
(In reply to Zhongyao Chen from comment #7)
> (In reply to JuzheZhong from comment #6)
> > The changes look good to me. Could you try the GCC testsuite testing with
> > your change ? It looks reasonable to return maximum LMUL (RVV_M8) instead of
> > regno_alignment.
> 
> testsuite passed.

OK