[llvm] [RISCV] RISC-V split register allocation and move vsetvl pass in between (PR #70549)

[Piyou Chen via llvm-commits]

BeMg wrote:

I have opened the seqerate patch for splitting regalloc only. https://github.com/llvm/llvm-project/pull/72096



https://github.com/llvm/llvm-project/pull/70549