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

[Florian Hahn via llvm-commits]

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@@ -2511,13 +2531,14 @@ void InnerLoopVectorizer::emitIterationCountCheck(BasicBlock *Bypass) {
          "TC check is expected to dominate Bypass");
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fhahn wrote:

Yes, this is to check the DT updates from SplitBlock I think

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