[llvm] [LV] Create in-loop sub reductions (PR #147026)

[Sander de Smalen via llvm-commits]

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@@ -9144,6 +9144,15 @@ void LoopVectorizationPlanner::adjustRecipesForReductions(
             CurrentLinkI->getFastMathFlags());
         LinkVPBB->insert(FMulRecipe, CurrentLink->getIterator());
         VecOp = FMulRecipe;
+      } else if (PhiR->isInLoop() && Kind == RecurKind::Add &&
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sdesmalen-arm wrote:

Why is this still looking for `RecurdKind::Add` and why does this code still need to look at `CurrentLink->getOpcode()` ?

https://github.com/llvm/llvm-project/pull/147026