[llvm] [VPlan] Delay adding canonical IV increment. (PR #82270)

[via llvm-commits]

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@@ -124,6 +124,11 @@ struct VPlanTransforms {
   /// Remove dead recipes from \p Plan.
   static void removeDeadRecipes(VPlan &Plan);
 
+  /// Finalize \p Plan by introducing explicit increments for the canonical
+  /// induction.
+  static void lowerCanonicalIV(VPlan &Plan, bool HasNUW,
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ayalz wrote:

Instead of `lower` can use `convert` to be consistent with `convertToConcreteRecipes()`, but for now this is more of a complementing/completing process rather than a lowering/conversion one?

https://github.com/llvm/llvm-project/pull/82270