[llvm] [LV] Bundle partial reductions inside VPExpressionRecipe (PR #147302)

[Sander de Smalen via llvm-commits]

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@@ -3512,6 +3521,9 @@ tryToMatchAndCreateExtendedReduction(VPReductionRecipe *Red, VPCostContext &Ctx,
 static VPExpressionRecipe *
 tryToMatchAndCreateMulAccumulateReduction(VPReductionRecipe *Red,
                                           VPCostContext &Ctx, VFRange &Range) {
+  using namespace VPlanPatternMatch;
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sdesmalen-arm wrote:

nit: is this [still] needed?

https://github.com/llvm/llvm-project/pull/147302