[llvm] [VPlan] Store memory alignment in VPWidenMemoryRecipe. nfc (PR #165255)

[Mel Chen via llvm-commits]

Mel-Chen wrote:

> Post-commit nit: constructors that have a Load/Store/Instruction parameter can retrieve the alignment from it rather than requesting that it be passed as an additional parameter.

@ayalz Do you mean like this? https://github.com/llvm/llvm-project/pull/165722


https://github.com/llvm/llvm-project/pull/165255