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

[via llvm-commits]

================
@@ -7643,20 +7671,15 @@ DenseMap<const SCEV *, Value *> LoopVectorizationPlanner::executePlan(
                               OrigLoop->getHeader()->getContext());
   VPlanTransforms::optimizeForVFAndUF(BestVPlan, BestVF, BestUF, PSE);
 
-  LLVM_DEBUG(dbgs() << "Executing best plan with VF=" << BestVF
-                    << ", UF=" << BestUF << '\n');
-  BestVPlan.setName("Final VPlan");
-  LLVM_DEBUG(BestVPlan.dump());
-
   // Perform the actual loop transformation.
   VPTransformState State(BestVF, BestUF, LI, DT, ILV.Builder, &ILV, &BestVPlan);
 
   // 0. Generate SCEV-dependent code into the preheader, including TripCount,
   // before making any changes to the CFG.
-  if (!BestVPlan.getPreheader()->empty()) {
+  if (!BestVPlan.getEntry()->empty()) {
----------------
ayalz wrote:

Note: worth renaming getPreheader() <--> getEntry() separately (?)

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