[llvm] [VPlan] Split VPWidenMemoryInstructionRecipe (NFCI). (PR #87411)

[via llvm-commits]

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@@ -2273,19 +2274,16 @@ class VPPredInstPHIRecipe : public VPSingleDefRecipe {
   }
 };
 
-/// A Recipe for widening load/store operations.
-/// The recipe uses the following VPValues:
-/// - For load: Address, optional mask
-/// - For store: Address, stored value, optional mask
-/// TODO: We currently execute only per-part unless a specific instance is
-/// provided.
-class VPWidenMemoryInstructionRecipe : public VPRecipeBase {
+/// A common base class for widening memory operations. An optional mask can be
+/// provided the last operand.
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ayalz wrote:

```suggestion
/// provided as the last operand.
```

https://github.com/llvm/llvm-project/pull/87411