Re: [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact

Andi Kleen
2009-01-09T19:26:13Z

On Fri, Jan 09, 2009 at 08:10:20PM +0100, Richard Guenther wrote:
> On Fri, Jan 9, 2009 at 8:21 PM, Andi Kleen <andi@firstfloor.org> wrote:
> >> GCC 4.3 should be good in compiling the
> >> kernel with default -Os settings.
> >
> > It's unfortunately not. It doesn't inline a lot of simple asm() inlines
> > for example.
>
> Reading Ingos posting with the actual numbers states the opposite.

Hugh had some numbers upto 4.4.0 20090102 in

http://thread.gmane.org/gmane.linux.kernel/775254/focus=777231

which demonstrated the problem.

-Andi

--
ak@linux.intel.com