[llvm] [LV] Support tail-folded epilogue loops (PR #208764)

[Florian Hahn via llvm-commits]

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@@ -5695,8 +6067,9 @@ DenseMap<const SCEV *, Value *> LoopVectorizationPlanner::executePlan(
                    BestVPlan, BestVF, VScale);
   }
 
+  const bool IsTailFolded = BestVPlan.hasTailFolded();
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fhahn wrote:

Is this change needed with the patch? It looks unrelated

https://github.com/llvm/llvm-project/pull/208764