On 06/09/16 06:04 PM, Marek Olšák wrote: > On Tue, Sep 6, 2016 at 3:54 AM, Michel Dänzer <mic...@daenzer.net> wrote: >> On 06/09/16 07:46 AM, Marek Olšák wrote: >>> From: Marek Olšák <marek.ol...@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.
My main point (which Gustaw seems to agree with) is that (un)likely should only be used when measurements show that they have a positive effect. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
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