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

[via llvm-commits]

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@@ -1451,6 +1465,11 @@ void VPlanIngredient::print(raw_ostream &O) const {
 
 #endif
 
+bool VPValue::isDefinedOutsideVectorRegions() const {
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ayalz wrote:

```suggestion
bool VPValue::isDefinedOutsideLoopRegions() const {
```

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