[llvm] [LV] Split checking if tail-folding is possible, collecting masked ops. (PR #77612)

[Florian Hahn via llvm-commits]

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@@ -276,9 +276,12 @@ class LoopVectorizationLegality {
   bool canVectorizeFPMath(bool EnableStrictReductions);
 
   /// Return true if we can vectorize this loop while folding its tail by
-  /// masking, and mark all respective loads/stores for masking.
-  /// This object's state is only modified iff this function returns true.
-  bool prepareToFoldTailByMasking();
+  /// masking.
+  bool canFoldTailByMasking() const;
+
+  /// Mark all respective loads/stores for masking. Must only be called when
+  /// ail-folding is possible.
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fhahn wrote:

Fixed thanks!

https://github.com/llvm/llvm-project/pull/77612