Re: [PATCH 0/3] MR749: vkd3d-shader/ir: Minimise temp usage.

[Giovanni Mascellani (＠giomasce)]

Giovanni Mascellani (@giomasce) commented about libs/vkd3d-shader/ir.c:
> +        }
> +    }
> +
> +    for (i = 0, count = 0; i < cfg->block_count; ++i)
> +    {
> +        struct vsir_block *block = &cfg->blocks[i];
> +        struct vkd3d_shader_instruction *ins;
> +
> +        for (ins = block->begin; ins <= block->end; ++ins)
> +        {
> +            for (j = 0; j < ins->src_count; ++j)
> +                count += register_map_undominated_use(&ins->src[j].reg, &ssa, block, origin_blocks);
> +        }
> +    }
> +
> +    if (!count)
> You don't really need to keep the whole count, right? You just need to know whether you have at least one to optimize the last pass away.

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/749#note_66645