[llvm] [VPlan] Add VPInstruction to unpack vector values to scalars. (PR #155670)

[Ramkumar Ramachandra via llvm-commits]

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@@ -7189,7 +7189,8 @@ DenseMap<const SCEV *, Value *> LoopVectorizationPlanner::executePlan(
   // TODO: Move to VPlan transform stage once the transition to the VPlan-based
   // cost model is complete for better cost estimates.
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artagnon wrote:

Is this comment still relevant?

https://github.com/llvm/llvm-project/pull/155670