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.