[llvm] [DA] Infer nsw on validated fixed-size delinearized subscripts (PR #201882)

[Madhur Amilkanthwar via llvm-commits]

madhur13490 wrote:

> @madhur13490 I've put up #202964 after fixing one bug in the implementation. I haven't reviewed the test changes in detail yet, maybe someone can take a look at the DA diffs.

Closing this PR in favour of above approach. 

https://github.com/llvm/llvm-project/pull/201882