Relevant discussion: https://github.com/dotnet/runtime/pull/100134#discussion_r1543135264 and https://github.com/dotnet/runtime/pull/100743#discussion_r1560010104 Today, we hardcode the VL to be 128-bits while encoding the [INS_sve_ldr](https://docsmirror.github.io/A64/2023-06/ldr_z_bi.html) and [INS_sve_str](https://docsmirror.github.io/A64/2023-06/str_z_bi.html). We should make sure that it is VL agnostic.