This adds LLVMAnyPointerToElt to use instead of LLVMPointerToElt.
This allows us to preserve the address space as part of the type
overload for the intrinsic, but still require the vector element
type to match the pointer type.
Reviewed By: nikic
Differential Revision: https://reviews.llvm.org/D122042
ISel for experimental.vp.strided.load|store for v256.32 types via
lowering to vvp_load|store SDNodes.
Reviewed By: kaz7
Differential Revision: https://reviews.llvm.org/D121616