[llvm] [VPlan] Implement interleaving as VPlan-to-VPlan transform. (PR #95842)

[via llvm-commits]

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@@ -1418,6 +1435,11 @@ void VPlanIngredient::print(raw_ostream &O) const {
 
 template void DomTreeBuilder::Calculate<VPDominatorTree>(VPDominatorTree &DT);
 
+bool VPValue::isDefinedOutsideVectorRegions() const {
+  return !hasDefiningRecipe() ||
+         !getDefiningRecipe()->getParent()->getEnclosingLoopRegion();
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ayalz wrote:

(This needs a const version of getEnclosingLoopRegion()).

https://github.com/llvm/llvm-project/pull/95842