[llvm] [LV] Use VPReductionRecipe for partial reductions (PR #144908)

[Sam Tebbs via llvm-commits]

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@@ -223,6 +223,8 @@ class TargetTransformInfo {
   /// Get the kind of extension that an instruction represents.
   LLVM_ABI static PartialReductionExtendKind
   getPartialReductionExtendKind(Instruction *I);
+  LLVM_ABI static PartialReductionExtendKind
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SamTebbs33 wrote:

This could be an NFC, but I don't know if it's worth it since it wouldn't meaningfully reduce the diff and committing something unused doesn't seem like a good idea, in case it ends up being unneeded in this PR for whatever reason.

https://github.com/llvm/llvm-project/pull/144908