diff --git a/contrib/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/contrib/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index 46ff0994e04e..0fdcb8be59ac 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -9266,7 +9266,11 @@ VPlanPtr LoopVectorizationPlanner::buildVPlanWithVPRecipes(
     VPBasicBlock *InsertBlock = PrevRecipe->getParent();
     auto *Region = GetReplicateRegion(PrevRecipe);
     if (Region)
-      InsertBlock = cast<VPBasicBlock>(Region->getSingleSuccessor());
+      InsertBlock = dyn_cast<VPBasicBlock>(Region->getSingleSuccessor());
+    if (!InsertBlock) {
+      InsertBlock = new VPBasicBlock(Region->getName() + ".succ");
+      VPBlockUtils::insertBlockAfter(InsertBlock, Region);
+    }
     if (Region || PrevRecipe->isPhi())
       Builder.setInsertPoint(InsertBlock, InsertBlock->getFirstNonPhi());
     else