[llvm] [VPlan] Split off VPReductionRecipe creation for in-loop reductions (NFC) (PR #168784)

[Florian Hahn via llvm-commits]

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@@ -620,14 +620,13 @@ class LoopVectorizationPlanner {
   /// legal to vectorize the loop. This method creates VPlans using VPRecipes.
   void buildVPlansWithVPRecipes(ElementCount MinVF, ElementCount MaxVF);
 
-  // Adjust the recipes for reductions. For in-loop reductions the chain of
-  // instructions leading from the loop exit instr to the phi need to be
-  // converted to reductions, with one operand being vector and the other being
-  // the scalar reduction chain. For other reductions, a select is introduced
-  // between the phi and users outside the vector region when folding the tail.
-  void adjustRecipesForReductions(VPlanPtr &Plan,
-                                  VPRecipeBuilder &RecipeBuilder,
-                                  ElementCount MinVF);
+  /// Add recipes to compute the final reduction result (ComputeFindIVResult,
+  /// ComputeAnyOfResult, ComputeReductionResult depending on the reduction) in
+  /// the middle block. Selects are introduced for regular reductions between
+  /// the phi and users outside the vector region when folding the tail.
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fhahn wrote:

Dropped, as this here now should handle all reductions, thanks

https://github.com/llvm/llvm-project/pull/168784