Re: [PATCH v12 0/6] MR471: vkd3d-shader/dxil: Implement the DXIL GEP and LOAD instructions.

[Conor McCarthy (＠cmccarthy)]

On Mon Nov 20 10:40:13 2023 +0000, Giovanni Mascellani wrote:
> Here the previous index of the register is replaced rather than added.
> So code like this:
> %1 = some global address
> %2 = GEP %1, 2
> %3 = GEP %2, 3
>
> will have `%3` initialized at 3 elements inside the global rather then
> 5. Is that intended? Maybe it would make sense to emit a warning if a
> situation like `%3` happens? Or to simply add the offset?
> Also, do we already have a way to have pointers to structs?
> `sm6_parser_declare_global()` allows us to declare arrays of scalars,
> but right now I don't remember anything about structs.

A GEP on the result of another never occurs, but AFAIK it's not invalid. I added a check for it.

Yes I think pointers to structs do not occur in DXIL, so I deleted that check.