[llvm] [RISCV] Move VMV0 elimination past machine SSA opts (PR #126850)

[via llvm-commits]

newgre wrote:

Thanks for the quick response.
Would you mind rolling back per https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy as this breaks one of our internal toolchains. Otherwise we will soon be in a situation where crucial build jobs become non-functional, and we'd really like to avoid that.

https://github.com/llvm/llvm-project/pull/126850