[llvm] [VPlan] Split out EVL exit cond transform from canonicalizeEVLLoops. NFC (PR #178181)

[Florian Hahn via llvm-commits]

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@@ -301,6 +301,12 @@ struct VPlanTransforms {
                                          VPlan &Plan, VPBasicBlock *HeaderVPBB,
                                          VPBasicBlock *LatchVPBB);
 
+  /// Replaces the exit condition from
+  ///   (branch-on-count CanonicalIVInc, VectorTripCount)
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fhahn wrote:

this needs updating I think , we are converting branch-on-cond to use a different condition

https://github.com/llvm/llvm-project/pull/178181