[llvm] [VPlan] Hook IR blocks into VPlan during skeleton creation (NFC) (PR #114292)

[via llvm-commits]

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@@ -3237,13 +3237,17 @@ void VPWidenPointerInductionRecipe::print(raw_ostream &O, const Twine &Indent,
 
 void VPExpandSCEVRecipe::execute(VPTransformState &State) {
   assert(!State.Lane && "cannot be used in per-lane");
+  if (State.ExpandedSCEVs.contains(Expr)) {
+    State.Builder.SetInsertPoint(State.CFG.VPBB2IRBB[getParent()]);
+    return;
+  }
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ayalz wrote:

Early-exit worth a comment?

https://github.com/llvm/llvm-project/pull/114292