[llvm] [RISCV] Set DebugLoc of epilogue (PR #74702)

[Wang Pengcheng via llvm-commits]

wangpc-pp wrote:

> I believe these were intentionally removed in [700042cd8890](https://github.com/llvm/llvm-project/commit/700042cd8890) which in turn references [3e08170](https://github.com/llvm/llvm-project/commit/3e081703c349dd00b8ef6991c2d15964915dd8f4) by @MatzeB.

Oh thanks! I forgot that I glanced over the patch before...
But is this the right way for current situation? The debugger behaves unproperly.

> 
> You might also be interested in https://reviews.llvm.org/D143248 which sadly got completely stuck as nobody seems to be able to review it.
I will take a look! Thanks!


https://github.com/llvm/llvm-project/pull/74702