[llvm] [RISCV] Ensure the valid vtype during copyPhysReg (PR #118252)

[Luke Lau via llvm-commits]

lukel97 wrote:

> My idea is to wait until we actually encounter a RVVReg COPY pseudo being added after the insert vsetvl pass, and then discuss how to resolve that case.

Now that some time has passed, has anyone run into a COPY inserted after RISCVInsertVSETVLI yet?

https://github.com/llvm/llvm-project/pull/118252