[llvm] [RISCV] Do not generate QC.CM.PUSHFP when rlist has only RA (PR #200541)

[Sudharsan Veeravalli via llvm-commits]

svs-quic wrote:

Don't think we're going to hit this after https://github.com/llvm/llvm-project/pull/200623. Closing

https://github.com/llvm/llvm-project/pull/200541