[Bug target/118057] RISC-V: Can't vectorize load and store with zvl128b

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118057

--- Comment #1 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
https://godbolt.org/z/q1E6dn6T9

Try -fno-vect-cost-model, it can be vectorized.

I think both Clang and GCC (with no cost vect model) vectorized code can't give
better performance in a wide-issue OOO superscalar machine.