[llvm] [VPlan] Explicitly unroll replicate-regions without live-outs by VF. (PR #170212)

[Andrei Elovikov via llvm-commits]

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@@ -537,7 +537,7 @@ static void addReplicateRegions(VPlan &Plan) {
 
 /// Remove redundant VPBasicBlocks by merging them into their predecessor if
 /// the predecessor has a single successor.
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eas wrote:

Move that comment to the header?

https://github.com/llvm/llvm-project/pull/170212