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

[Benjamin Maxwell 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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MacDue wrote:

If we allow this case make sure to rename the test from "not_dotp" to "dotp".  

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