Re: [PATCH v4 0/12] MR672: vkd3d-shader/ir: Introduce a better CFG structurizer, part 3.

[Conor McCarthy (＠cmccarthy)]

Conor McCarthy (@cmccarthy) commented about libs/vkd3d-shader/ir.c:
> +            in_degrees[i] = UINT_MAX;
> +            continue;
> +        }
> +
> +        in_degrees[i] = block->predecessors.count;
> +
> +        /* Do not count back edges. */
> +        if (cfg->loops_by_header[i])
> +        {
> +            assert(in_degrees[i] > 0);
> +            in_degrees[i] -= 1;
> +        }
> +
> +        if (in_degrees[i] == 0 && block != cfg->entry)
> +        {
> +            ERR("Unexpected entry point %u.\n", block->label);
> Is this more accurately a `FIXME`? We don't normally emit `ERR` because a shader is invalid. Ditto for the entry point check after the loop.

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/672#note_62886