[llvm] [LV][VPlan] Introduce VPScalarStore recipe to handle scalar stores in exit block. (PR #93148)

[Florian Hahn via llvm-commits]

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@@ -2964,6 +2966,60 @@ class VPScalarIVStepsRecipe : public VPRecipeWithIRFlags {
   }
 };
 
+/// A recipe to represent scalar stores that are outside the vector loop region.
+/// Both the stored value and the address must be uniform, and finally, only a
+/// single store instance will be generated.
+class VPScalarStoreRecipe : public VPRecipeBase {
+  /// The alignment information of this store.
+  MaybeAlign Alignment = std::nullopt;
+  /// The ingredient store of this recipe.
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fhahn wrote:

would be good to clarify that this is only used to access metadata?

https://github.com/llvm/llvm-project/pull/93148