[llvm] [LoongArch] Eliminate the redundant sign extension of division (PR #107971)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> I think this might have broken the CI tests. I am trying to replicate the test error on my local machine and in that case revert these last batch of changes to loongarch.
> 
> See here - https://github.com/llvm/llvm-project/actions/runs/10889855545/job/30217355303
> 
> if anyone is around now and can have a look I would appriciate it since I am slated to do this release now.

See https://github.com/llvm/llvm-project/pull/107990#issuecomment-2341112360. Changes in `llvm/test/CodeGen/LoongArch/ir-instruction/sdiv-udiv-srem-urem.ll` are missing.



https://github.com/llvm/llvm-project/pull/107971