[llvm] [LV] Change VPVectorPointerRecipe to emit byte GEP instead of typed GEP (PR #174934)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

> Currently, VPVectorPointerRecipe has the form: vector-pointer %ptr, (%offset).
This makes it difficult to add a stride operand to VPVectorPointerRecipe for https://github.com/llvm/llvm-project/pull/147297.

Could you add more detail on what is currently making this difficult? 

https://github.com/llvm/llvm-project/pull/174934