[llvm] [LV] Add initial legality checks for early exit loops with side effects (PR #145663)

[Mikael Holmen via llvm-commits]

mikaelholmen wrote:

> > Hi @huntergr-arm
> > We see crashes with this patch. `opt --passes=loop-vectorize bbi-110488.ll -o /dev/null` fails with
> 
> Thanks for the report, should be fixed by [54fc536](https://github.com/llvm/llvm-project/commit/54fc5367f63cca8e011d93bbd55764b0a7ecbbd5)

Thanks!

https://github.com/llvm/llvm-project/pull/145663