lkml.org 
[lkml]   [2007]   [Jan]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: kernel + gcc 4.1 = several problems
Date
On Wednesday 03 January 2007 21:38, Linus Torvalds wrote:
> On Wed, 3 Jan 2007, Denis Vlasenko wrote:
> >
> > Why CPU people do not internally convert cmov into jmp,mov pair?
>
...
> It really all boils down to: there's simply no real reason to use cmov.
> It's not horrible either, so go ahead and use it if you want to, but don't
> expect your code to really magically run any faster.

IOW: yet another slot in instruction opcode matrix and thousands of
transistors in instruction decoders are wasted because of this
"clever invention", eh?
--
vda
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-01-03 22:53    [from the cache]
©2003-2011 Jasper Spaans