[llvm] [LV] Add initial legality checks for ee loops with stores (PR #145663)

[Florian Hahn via llvm-commits]

================
@@ -407,6 +407,14 @@ class LoopVectorizationLegality {
     return UncountableExitingBB;
   }
 
+  /// Returns true if this is an early exit loop with state-changing or
+  /// potentially-faulting operations and the IR representing the condition
+  /// for the uncounted exit must be determined before any of the state changes
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fhahn wrote:

```suggestion
  /// for the uncountable exit must be determined before any of the state changes
```

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