[llvm] [VPlan] Create header phi recipes after initial scalar optimizations. (PR #200920)

[Ramkumar Ramachandra via llvm-commits]

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@@ -948,6 +964,7 @@ bool VPlanTransforms::createHeaderPhiRecipes(
         RdxDesc.hasUsesOutsideReductionChain());
   };
 
+  SmallVector<VPValue *> BackedgeVals;
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artagnon wrote:

Hm, why is this in the diff?

https://github.com/llvm/llvm-project/pull/200920