[llvm-branch-commits] [llvm] [LV] Reduce register usage for scaled reductions (PR #133090)

[David Sherwood via llvm-branch-commits]

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@@ -2033,6 +2033,8 @@ class VPReductionPHIRecipe : public VPHeaderPHIRecipe,
   /// Generate the phi/select nodes.
   void execute(VPTransformState &State) override;
 
+  unsigned getVFScaleFactor() const { return VFScaleFactor; }
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david-arm wrote:

Perhaps good to have comments on both new functions added?

https://github.com/llvm/llvm-project/pull/133090
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