[llvm] [VPlan] Replace EVL branch condition with (branch-on-count AVLNext, 0) (PR #152167)

[Florian Hahn via llvm-commits]

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@@ -224,9 +224,10 @@ struct VPlanTransforms {
   /// variable vector lengths instead of fixed lengths. This transformation:
   ///  * Makes EVL-Phi concrete.
   //   * Removes CanonicalIV and increment.
-  ///  * Replaces fixed-length stepping (branch-on-cond CanonicalIVInc,
-  ///    VectorTripCount) with variable-length stepping (branch-on-cond
-  ///    EVLIVInc, TripCount).
+  ///  * Replaces the exit condition from
+  ///      (branch-on-cond CanonicalIVInc, VectorTripCount)
+  ///    to
+  ///      (branch-on-cond AVLNext, 0)
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fhahn wrote:

this says branch-on-cond here, but in the function it says branch-on-count. When comparing against zero and not the vector trip count, using branch-on-cond would make more sense

https://github.com/llvm/llvm-project/pull/152167