[RISCV] Add vcpop.m/vfirst.m to RISCVMaskedPseudosTable#115162

wangpc-pp merged 4 commits intomainllvm/llvm-project:mainfrom

users/wangpc-pp/spr/riscv-add-vcpopmvfirstm-to-riscvmaskedpseudostablellvm/llvm-project:users/wangpc-pp/spr/riscv-add-vcpopmvfirstm-to-riscvmaskedpseudostableCopy head branch name to clipboard