[llvm] [AArch64] Lower partial add reduction to udot or svdot (PR #101010)

[Paul Walker via llvm-commits]

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@@ -1971,6 +1971,26 @@ bool AArch64TargetLowering::shouldExpandGetActiveLaneMask(EVT ResVT,
   return false;
 }
 
+bool AArch64TargetLowering::shouldExpandPartialReductionIntrinsic(
+    const IntrinsicInst *I) const {
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paulwalker-arm wrote:

If the intent is for this function to support other partial reduction then you should be rejecting intrinsics whose ID is not `Intrinsic::experimental_vector_partial_reduce_add`.

https://github.com/llvm/llvm-project/pull/101010