[llvm-branch-commits] [llvm] [LoopVectorizer] Bundle partial reductions inside VPMulAccumulateReductionRecipe (PR #136173)

[Sander de Smalen via llvm-branch-commits]

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@@ -4923,9 +4923,7 @@ InstructionCost AArch64TTIImpl::getPartialReductionCost(
         return Invalid;
       break;
     case 16:
-      if (AccumEVT == MVT::i64)
-        Cost *= 2;
-      else if (AccumEVT != MVT::i32)
+      if (AccumEVT != MVT::i32)
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sdesmalen-arm wrote:

Why are you making this change?

https://github.com/llvm/llvm-project/pull/136173