[Mesa-dev] [PATCH 3/4] radeonsi: add more unlikely() uses into si_draw_vbo

[Marek Olšák]

On Tue, Sep 6, 2016 at 3:54 AM, Michel Dänzer <michel at daenzer.net> wrote:
> On 06/09/16 07:46 AM, Marek Olšák wrote:
>> From: Marek Olšák <marek.olsak at amd.com>
>
> Did you measure any significant performance boost with this change?

I didn't measure anything.

> Otherwise, using (un)likely can be bad because it can defeat the CPU's
> branch prediction, which tends to be pretty good these days.

I'm not an expert on that, but it doesn't seem to be the case
according to other people's comments here.

Marek