[llvm] [VPlan] Compute cost for most opcodes in VPWidenRecipe (NFCI). (PR #98764)

[via llvm-commits]

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@@ -1426,6 +1430,10 @@ class VPWidenRecipe : public VPRecipeWithIRFlags {
   /// processing State.VF elements.
   void execute(VPTransformState &State) override;
 
+  /// Return the cost of this VPWidenRecipe.
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ayalz wrote:

"Return" >> "Compute and return"

https://github.com/llvm/llvm-project/pull/98764