[llvm] [VPlan] Replace VPRegionBlock with explicit CFG before execute (NFCI). (PR #117506)

[Florian Hahn via llvm-commits]

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@@ -2874,7 +2870,7 @@ void InnerLoopVectorizer::fixVectorizedLoop(VPTransformState &State) {
 }
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fhahn wrote:

Yep, although it will require modifying the original scalar loop in VPlan, which probably needs more thought what kind of modifications we need. Maybe adding metadata would be sufficient?

https://github.com/llvm/llvm-project/pull/117506