[llvm] [LV] Support strided load with a stride of -1 (PR #128718)

[Florian Hahn via llvm-commits]

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@@ -1720,16 +1723,21 @@ class VPVectorEndPointerRecipe : public VPRecipeWithIRFlags,
 };
 
 /// A recipe to compute the pointers for widened memory accesses of IndexTy.
+/// Supports both consecutive and reverse consecutive accesses.
+/// TODO: Support non-unit strided accesses .
 class VPVectorPointerRecipe : public VPRecipeWithIRFlags,
                               public VPUnrollPartAccessor<1> {
   Type *IndexedTy;
 
+  /// Indicate whether to compute the pointer for strided memory accesses.
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fhahn wrote:

Should document what the stride is.

https://github.com/llvm/llvm-project/pull/128718