Re: [PATCH] RISC-V: Lower vmv.v.x (avl = 1) into vmv.s.x

LGTM. Regards Robin

[PATCH] RISC-V: Lower vmv.v.x (avl = 1) into vmv.s.x

Notice there is a AI benchmark, GCC vs Clang has 3% performance drop. It's because Clang/LLVM has a simplification transform vmv.v.x (avl = 1) into vmv.s.x. Since vmv.s.x has more flexible vsetvl demand than vmv.v.x that can allow us to have better chances to fuse vsetvl. Consider this