lkml.org 
[lkml]   [2009]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Make shr to divide by power of 2
On (08/07/09 08:50), Andi Kleen wrote:
> Sergey Senozhatsky <sergey.senozhatsky@gmail.com> writes:
> >
> > Of course, compiler supposed to do something like
> > add $0x7,%eax
> > shr $0x3,%eax
> > instead of div. Should we rely on this?
>
> Yes. We should rely on this.
>

grep -cR '>> 3' bitblit.c
5

and only 1 '/8'.

Sergey
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2009-08-07 09:41    [W:0.209 / U:0.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site