[llvm] [VPlan] Build initial VPlan 0 using HCFGBuilder for inner loops. (NFC) (PR #124432)

[Florian Hahn via llvm-commits]

fhahn wrote:

@mikaelholmen it should be fixed in a96444af440a309592fe1043885a51ac0a5fb125. The assertion was over-eager and the related code actually unused.

@Zentrik it would be great if you could check if the issue is fixed. If not, would you be able to share a reproducer.

https://github.com/llvm/llvm-project/pull/124432