We have discussed -Ok(ernel) with the gcc guys in earnest.  They are receptive 
but lack the round tuits.

Steven Rostedt <rost...@goodmis.org> wrote:

>On Sat, 2013-01-26 at 11:43 -0800, Linus Torvalds wrote:
>
>> The problem, of course, is that most -O2 code generation is done
>> assuming hot loops that don't show much if any I$ issues. And the -Os
>> thing is done *purely* for size, not taking any performance into
>> account at all. There's no balanced middle ground, which is what _we_
>> would want.
>
>Gcc needs to implement a -Olinus
>
>;-)
>
>-- Steve

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