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

[John Brawn 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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john-brawn-arm wrote:

Using a shallow traversal doesn't work (causes test failures due to blocks being replicated when they shouldn't be), but using any_of sounds reasonable so I've done that.

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