nir: Add nir_address_format_32bit_offset

This is a simple 32-bit address which is not a global address.  Gives
us a format that don't use 0 as its null pointer value.  We will need
this in anv to represent nir_var_mem_shared addresses.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2 files changed