[llvm] [LAA] Fix type mismatch in getStartAndEndForAccess. (PR #183116)

[Kshitij Paranjape via llvm-commits]

kshitijvp wrote:

> LGTM, thanks

The test will not be vectorized as it is potentially a early exit loop due to
```
  %iv.next = add nuw nsw i64 %iv, 1
  %counted.cond = icmp eq i64 %iv.next, %tc
  br i1 %counted.cond, label %exit, label %for.body
```
and removing the store instruction causes faulting load.
 so I should move it back to `early_exit_store_legality.ll` as 'dereferenceable-info-from-assumption-variable-size.ll` has only positive tests (getting vectorized).

https://github.com/llvm/llvm-project/pull/183116