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Subject: Re: [tip:x86/asm] x86/defconfig: Turn on
 CONFIG_CC_OPTIMIZE_FOR_SIZE= y in the 64-bit defconfig
From: Steven Rostedt <rostedt@goodmis.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
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        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        linux-tip-commits@vger.kernel.org
Date: Sat, 26 Jan 2013 16:02:47 -0500
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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