Re: [PATCH v3 0/3] MR487: vkd3d-shader/hlsl: Fix infinite loops when applying copy-prop to swizzles, version 3.

[Giovanni Mascellani (＠giomasce)]

Giovanni Mascellani (@giomasce) commented about libs/vkd3d-shader/hlsl_codegen.c:
> * cannot easily vectorize the stores @3 and @6.
>   */
>
> -enum copy_propagation_value_state
> -{
> -    VALUE_STATE_NOT_WRITTEN = 0,
> -    VALUE_STATE_STATICALLY_WRITTEN,
> -    VALUE_STATE_DYNAMICALLY_WRITTEN,
> -};
> -
>  struct copy_propagation_value
>  {
> -    enum copy_propagation_value_state state;
> +    unsigned int timestamp;
> +    bool statically_written;
> It seems as if `statically_written` could be assumed to be `!!node`, so you have one fewer consistency rule to enforce.

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/487#note_53494