[llvm] [RISCV] Support the large code model. (PR #70308)

[Jim Lin via llvm-commits]

tclin914 wrote:

> It's only been 3 days; courtesy is no sooner than a week for non-urgent patches https://llvm.org/docs/CodeReview.html#code-reviews-speed-and-reciprocity

The last time I updated the code to address the review comments was one week ago. I replied with the evaluation results three days ago and simply rebased it to resolve the conflict two days ago. I will wait longer next time.

https://github.com/llvm/llvm-project/pull/70308