[llvm] [RISCV] Minimally modify incoming state in transferBefore (PR #72352)

[Luke Lau via llvm-commits]

lukel97 wrote:

I have rebased this upon #73909 and added back an early exit that was responsible for a lot of test diffs. Ideally we should be able to view the diff of the four commits past #73909, but GitHub seems to error when I try this:

<img width="432" alt="image" src="https://github.com/llvm/llvm-project/assets/2488460/c6e51fe2-a825-47ca-a127-e4e9df682750">

Here's a link to the diff instead: https://github.com/lukel97/llvm-project/compare/move-avl-reg-coalescing...lukel97:llvm-project:reverse-transferBefore

https://github.com/llvm/llvm-project/pull/72352