[llvm] [VPlan] Impl VPlan-based pattern match for ExtendedRed and MulAccRed (PR #113903)

[Elvis Wang via llvm-commits]

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@@ -2085,6 +2087,86 @@ void VPlanTransforms::createInterleaveGroups(
   }
 }
 
+// Expand VPExtendedReductionRecipe to VPWidenCastRecipe + VPReductionRecipe.
+static void expandVPExtendedReduction(VPExtendedReductionRecipe *ExtRed) {
+  // Genearte VPWidenCastRecipe.
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ElvisWang123 wrote:

Updated, thanks!

https://github.com/llvm/llvm-project/pull/113903