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

[via llvm-commits]

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@@ -1038,8 +1041,10 @@ void VPlan::execute(VPTransformState *State) {
   State->CFG.DTU.applyUpdates(
       {{DominatorTree::Delete, ScalarPh, ScalarPh->getSingleSuccessor()}});
 
+  ReversePostOrderTraversal<VPBlockShallowTraversalWrapper<VPBlockBase *>> RPOT(
+      Entry);
   // Generate code in the loop pre-header and body.
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ayalz wrote:

Comment should be updated - code for runtime guards has already been generated (is simply skipped here), but code is generated also after the body (middle, scalar pre-header).

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