[llvm-branch-commits] [llvm] [LV] Choose best reduction for VPlan (PR #166138)

[Sushant Gokhale via llvm-branch-commits]

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@@ -3773,19 +3775,76 @@ static void tryToCreateAbstractReductionRecipe(VPReductionRecipe *Red,
     AbstractR = ExtRed;
   // Cannot create abstract inloop reduction recipes.
   if (!AbstractR)
-    return;
+    return false;
 
   AbstractR->insertBefore(*VPBB, IP);
   Red->replaceAllUsesWith(AbstractR);
+  return true;
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sushgokh wrote:

Need to add `Red->eraseFromParent();` before this ?

https://github.com/llvm/llvm-project/pull/166138