[Bug target/115763] RISC-V: Use wrong SEW for vfmv.v.f when -march only has zvfhmin

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115763

--- Comment #1 from Li Pan <pan2.li at intel dot com> ---
Thanks for reporting this, I can reproduce from today's upstream by the below
command:

../__RV64/bin/riscv64-unknown-elf-gcc pr115763.c -mabi=lp64d
-march=rv64gcv_zfh_zvfhmin -O3 -ftree-vectorize -fno-vect-cost-model -c -S -o -