ld flag that gives ~40% startup time boost

[John Richard Moser]

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Scott James Remnant wrote:
> On Thu, 2006-06-22 at 21:31 +0100, James Laver wrote:
> 
>> On a sidenote, I'm rather fond of -O3 where it works (sqlite, for
>> example), but i typically go -O2 for most of my compiles.
>>
> -O7 gives the best gains, obviously.
> 

I dunno, libpng seems to favor -O99...

- -O3 does things that make binaries load and run slower sometimes, but
under some conditions makes them faster.  Among other things I think it
unrolls loops (which can cause excessive page faults during looping).

> Scott
> 

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