llvm-16

    decl_var  INTERP_MODE_NONE none struct.GFX12_3DSTATE_VERTEX_BUFFERS v
    64      %5 = deref_var &v (function_temp struct.GFX12_3DSTATE_VERTEX_BUFFERS)
    32    %185 = ...
    64     %26 = deref_struct &%5->field0 (function_temp uint)  // &v.field0
    64     %27 = deref_cast (uint *)%26 (function_temp uint)  (ptr_stride=0, align_mul=4, align_offset=0)
                 @store_deref (%27, %185) (wrmask=x, access=none)
    32     %48 = @load_deref (%27) (access=none)
    64     %49 = u2u64 %48

nir_opt_copy_prop_vars:
    32    %185 = ...
    64     %49 = u2u64 %185

llvm-17

    decl_var  INTERP_MODE_NONE none struct.GFX12_3DSTATE_VERTEX_BUFFERS v
    64      %5 = deref_var &v (function_temp struct.GFX12_3DSTATE_VERTEX_BUFFERS)
    32    %185 = ...
    64     %26 = deref_struct &%5->field0 (function_temp uint)  // &v.field0
    64     %27 = deref_cast (uint *)%26 (function_temp uint)  (ptr_stride=0, align_mul=4, align_offset=0)
                 @store_deref (%27, %185) (wrmask=x, access=none)
    64     %37 = deref_cast (uint *)%5 (function_temp uint)  (ptr_stride=0, align_mul=0, align_offset=0)
    32     %48 = @load_deref (%37) (access=none)
    64     %49 = u2u64 %48