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Date: Thu, 08 May 2008 08:28:35 +0400
From: Alex Tutubalin <lexa@lexa.ru>
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To: "Sergey A. Osokin" <osa@FreeBSD.org>
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Cc: Jeremy Messenger <mezz7@cox.net>, cvs-ports@freebsd.org,
	cvs-all@freebsd.org, ports-committers@freebsd.org
Subject: Re: cvs commit: ports/graphics/libraw Makefile
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Sergey A. Osokin wrote:
>
> I'm also Cc'ed this letter to libraw author Alex Tutubalin.
> Alex, could you provide more information about compile optimization?
> Thank you.
>   
LibRaw depends heavily on Dave Coffin's dcraw utlility. I've copied -O4 
option from dcraw page
(http://cybercom.net/~dcoffin/dcraw/)

Anyway, just tested it on FreeBSD7/i386 on Intel C2D
Execution time for LibRaw test is near same for -O3 and -O4
There is significant difference between -O2 and -O3 (about 10%)

So, you can change to -O3 in port Makefile patches

I will also change to -O3 in future LibRaw releases.

-- 
Alex Tutubalin
Web: http://blog.lexa.ru
mailto:lexa@lexa.ru