[llvm] [RISCV] Reduce spill/reload pairs when Xqcilo extension is enabled (PR #212807)

[Garvit Gupta via llvm-commits]

quic-garvgupt wrote:

This PR solves the code size regression in high register pressure function introduced by PR https://github.com/llvm/llvm-project/pull/209315

https://github.com/llvm/llvm-project/pull/212807