[llvm] [DA] handle memory accesses with different offsets and strides (PR #123436)

[Ryotaro Kasuga via llvm-commits]

https://github.com/kasuga-fj approved this pull request.

I still think there may be some corner cases, but this patch is taking things in the right direction. There might be some minor details that should be corrected, but for now, it looks good to me.

It's better to wait a while for responses from others who left comments.

https://github.com/llvm/llvm-project/pull/123436