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

[via llvm-commits]

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@@ -7894,14 +7906,14 @@ DenseMap<const SCEV *, Value *> LoopVectorizationPlanner::executePlan(
   // 2.6. Maintain Loop Hints
   // Keep all loop hints from the original loop on the vector loop (we'll
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ayalz wrote:

Could the Loop Hints be captured in VPIRMetadata?

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