[llvm] [LoopVectorize] Don't replicate blocks with optsize (PR #129265)

[Florian Hahn via llvm-commits]

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@@ -4513,6 +4513,14 @@ static bool willGenerateVectors(VPlan &Plan, ElementCount VF,
   return false;
 }
 
+static bool hasReplicatorRegion(VPlan &Plan) {
+  for (auto *VPRB : VPBlockUtils::blocksOnly<VPRegionBlock>(
+           vp_depth_first_deep(Plan.getEntry())))
+    if (VPRB->isReplicator())
+      return true;
+  return false;
+}
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fhahn wrote:

Sufficient to do a shallow traversal of the vector loop region? And use `any_of`?

https://github.com/llvm/llvm-project/pull/129265