4.1-rc1 fails with O3 optimization

[leo kirotawa]

I could boot it using qemu. So what's the point?

On Tue, Apr 28, 2015 at 2:41 AM, Andev <debiandev at gmail.com> wrote:

> On Mon, Apr 27, 2015 at 9:00 PM, Bobby Powers <bobbypowers at gmail.com>
> wrote:
> > Hello,
> >
> > Andev wrote:
> >> I usually compile my kernel with an unsupported O3 option(why not? :).
> >
> > Because there have been publications that show on major benchmarks,
> > the effects of -O3 are indistinguishable from noise:
> > http://people.cs.umass.edu/~emery/pubs/Stabilizer-UMass-CS-TR2011-43.pdf
> >
> > Have you noticed that -O3 provides any performance benefits over -O2?
> >
>
> Look here: http://www.spinics.net/lists/kernel/msg1962561.html
>
> Btw, this will help uncover problems in either gcc or the kernel for
> sure. So no harm in trying!
>
> --
> Andev
>
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-- 

----------------------------------------------
Leônidas S. Barbosa (Kirotawa)
blog: corecode.wordpress.com
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