[llvm] [VPlan] Make canonical IV part of the region (PR #156262)

[via llvm-commits]

================
@@ -4411,22 +4381,22 @@ class VPlan {
     return VPB;
   }
 
-  /// Create a new VPRegionBlock with \p Entry, \p Exiting and \p Name. If \p
-  /// IsReplicator is true, the region is a replicate region. The returned block
-  /// is owned by the VPlan and deleted once the VPlan is destroyed.
+  /// Create a new replicate VPRegionBlock with \p Entry, \p Exiting and \p
+  /// Name. The returned block is owned by the VPlan and deleted once the VPlan
+  /// is destroyed.
   VPRegionBlock *createVPRegionBlock(VPBlockBase *Entry, VPBlockBase *Exiting,
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ayalz wrote:

```suggestion
  VPRegionBlock *createReplicateRegion(VPBlockBase *Entry, VPBlockBase *Exiting,
```
?

https://github.com/llvm/llvm-project/pull/156262