[RISCV] Handled the uimm9 offset while FrameIndex folding.#149303

djtodoro merged 4 commits intollvm:mainllvm/llvm-project:mainfrom

ukalappa-mips:ukalappa_riscv_frameindexukalappa-mips/llvm-project:ukalappa_riscv_frameindexCopy head branch name to clipboard