Messages in this thread | | | Date | Fri, 9 May 2014 22:51:55 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 06/20] arch,avr32: Fold atomic_ops |
| |
On Fri, May 09, 2014 at 10:43:09PM +0200, Peter Zijlstra wrote: > On Fri, May 09, 2014 at 08:32:41PM +0200, Hans-Christian Egtvedt wrote:
> > > - if (__builtin_constant_p(i) && (i >= -1048575) && (i <= 1048576)) > > > - result = atomic_sub_return(-i, v); > > > > I do not recall why we did it like this any more, I would assume both sub and > > add to be single cycle instructions.
Similarly, can I rip out atomic_sub_unless() ?
| |