[llvm] [DebugInfo] Fix #76058: missing debug location in processSDiv function (PR #76118)

[Shan Huang via llvm-commits]

Apochens wrote:

Hi, Nikita! To refine the testcase, I **(1) removed line 5-8**, moving the check lines directly above the function, and **(2) discarded the llvm.debugify metadata** (since it's not necessary). After the refinement, I tested the patch on this testcase, and It does work. 

Could you please review this PR again to check whether there is any other issue? Thanks.

https://github.com/llvm/llvm-project/pull/76118