[llvm] [Delinearization] Add function for fixed size array without relying on GEP (PR #145050)

[Sjoerd Meijer via llvm-commits]

https://github.com/sjoerdmeijer commented:

> If you're referring to https://github.com/llvm/llvm-project/pull/145050#discussion_r2172061181, I meant "this part of the code" as in "the code from lines 774 to 777". Sorry for confusion, but I didn't mean to imply that the entire change in this PR is just for testing purposes. Once this is merged, I'm considering submitting another patch to replace the call to tryDelinearizeFixedSizeImpl in DA with the new function.

Okay, got it, thanks for clarifying!

https://github.com/llvm/llvm-project/pull/145050