[llvm] [VPlan] Add ReductionStartVector VPInstruction. (PR #142290)

[Mel Chen via llvm-commits]

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@@ -8286,6 +8289,7 @@ VPRecipeBase *VPRecipeBuilder::tryToCreateWidenRecipe(VPSingleDefRecipe *R,
       // If the PHI is used by a partial reduction, set the scale factor.
       unsigned ScaleFactor =
           getScalingForReduction(RdxDesc.getLoopExitInstr()).value_or(1);
+
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Mel-Chen wrote:

Redundant blank

https://github.com/llvm/llvm-project/pull/142290