[llvm] [VPlan] Support multiple F(Max|Min)Num reductions. (PR #161735)

[via llvm-commits]

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@@ -823,7 +823,7 @@ bool VPlanTransforms::handleMaxMinNumReductions(VPlan &Plan) {
   };
 
   VPRegionBlock *LoopRegion = Plan.getVectorLoopRegion();
-  VPReductionPHIRecipe *RedPhiR = nullptr;
+  SmallVector<VPReductionPHIRecipe *> ReductionsToConvert;
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ayalz wrote:

```suggestion
  SmallVector<VPReductionPHIRecipe *> MinMaxNumReductionsToHandle;
```

https://github.com/llvm/llvm-project/pull/161735