[llvm] [VPlan] Connect Entry to scalar preheader during initial construction. (PR #140132)

[via llvm-commits]

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@@ -2368,14 +2368,11 @@ InnerLoopVectorizer::getOrCreateVectorTripCount(BasicBlock *InsertBlock) {
 void InnerLoopVectorizer::introduceCheckBlockInVPlan(BasicBlock *CheckIRBB) {
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ayalz wrote:

Clarify that CheckBlock now excludes the initial trip-count check, which is expected to be already introduced before calling `introduceCheckBlockInVPlan()`?

https://github.com/llvm/llvm-project/pull/140132