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

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> @dtcxzyw in which SHA are they? I understood it as I had to merge both this and #107990 to get everything to work?

https://github.com/llvm/llvm-project/commit/0f47e3aebdd2a4a938468a272ea4224552dbf176.


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