On Thu, Aug 23, 2007 at 06:03:29PM -0700, Jeremy Fitzhardinge wrote:
> Matt Mackall wrote:
> > 6e: 38 08 cmp %cl,(%eax)
> > 70: 74 07 je 79 <memchr3+0x1b>
> > 72: 40 inc %eax
> >
> It's a bit gross that the compiler is using inc here rather than lea or
> add, but still...
>
> Er, something's spending 30% of its time in memchr? This is not the
> code to fix.
Indeed. I'm just pointing out the general optimization of walking
one counter instead of two.
Hmm, perhaps the culprit is validate_nla?
--
Mathematics is the supreme nostalgia of our time.
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