[llvm] [RISCV] Fix Xqci Fusions with Frame Indexes (PR #213815)

[Pengcheng Wang via llvm-commits]

wangpc-pp wrote:

> > I was thinking that we should make CheckRegOperand generate checking of isReg() implicitly because I also made such mistakes for several times.
> 
> Yeah I can do a follow-up for this.

https://github.com/llvm/llvm-project/pull/215230

https://github.com/llvm/llvm-project/pull/213815