[llvm] [LV] Use VPReductionRecipe for partial reductions (PR #147513)

[Sander de Smalen via llvm-commits]

================
@@ -8811,9 +8819,11 @@ void LoopVectorizationPlanner::adjustRecipesForReductions(
       if (CM.blockNeedsPredicationForAnyReason(CurrentLinkI->getParent()))
         CondOp = RecipeBuilder.getBlockInMask(CurrentLink->getParent());
 
-      auto *RedRecipe = new VPReductionRecipe(
-          Kind, FMFs, CurrentLinkI, PreviousLink, VecOp, CondOp,
-          PhiR->isOrdered(), CurrentLinkI->getDebugLoc());
+      bool UseOrderedReductions = PhiR->isOrdered();
+      ReductionStyle Style = getReductionStyle(true, UseOrderedReductions, 1);
----------------
sdesmalen-arm wrote:

nit:
```suggestion
      ReductionStyle Style = getReductionStyle(true, PhiR->isOrdered(), 1);
```

https://github.com/llvm/llvm-project/pull/147513