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

[Graham Hunter via llvm-commits]

================
@@ -542,7 +550,13 @@ class LoopVectorizationLegality {
   /// The list above is not based on theoretical limitations of vectorization,
   /// but simply a statement that more work is needed to support these
   /// additional cases safely.
-  bool isVectorizableEarlyExitLoop();
+  bool isVectorizableEarlyExitLoop(std::optional<LoadInst *> &);
----------------
huntergr-arm wrote:

I'm only dealing with cases involving a load of the condition at the moment; we can consider additional cases later. However, I think we'll only want to record loads here in any case, since we need to know which ones to look at in canVectorizeMemory.

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