[llvm] [RISCV] Combine vmv.s.x to vmv.v.i if VL is known > 0 (PR #67155)

[Luke Lau via llvm-commits]

lukel97 wrote:

> I don't think this is going to be profitable. An LI is going to be much cheaper than a VL toggle.

Thanks, I'm happy with that explanation.

https://github.com/llvm/llvm-project/pull/67155