From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/1515
Path: news.gmane.org!not-for-mail
From: Solar Designer <solar@openwall.com>
Newsgroups: gmane.linux.lib.musl.general
Subject: Re: crypt_blowfish integration, optimization
Date: Sat, 11 Aug 2012 02:52:44 +0400
Message-ID: <20120810225244.GA31063@openwall.com>
References: <CAPLrYETKUwjrV-R6ohPZuDZUXezSMvJM6Dzf7enitPu7gq_2yg@mail.gmail.com> <20120808214855.GL27715@brightrain.aerifal.cx> <20120809033613.GA24926@openwall.com> <20120809072940.GA26288@openwall.com> <20120809105348.GA27361@openwall.com> <20120809214654.GU27715@brightrain.aerifal.cx> <20120809222103.GA29365@openwall.com> <20120809223258.GW27715@brightrain.aerifal.cx> <20120810171803.GB29839@openwall.com> <20120810180814.GB27715@brightrain.aerifal.cx>
Reply-To: musl@lists.openwall.com
NNTP-Posting-Host: plane.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: dough.gmane.org 1344639179 2304 80.91.229.3 (10 Aug 2012 22:52:59 GMT)
X-Complaints-To: usenet@dough.gmane.org
NNTP-Posting-Date: Fri, 10 Aug 2012 22:52:59 +0000 (UTC)
To: musl@lists.openwall.com
Original-X-From: musl-return-1516-gllmg-musl=m.gmane.org@lists.openwall.com Sat Aug 11 00:52:58 2012
Return-path: <musl-return-1516-gllmg-musl=m.gmane.org@lists.openwall.com>
Envelope-to: gllmg-musl@plane.gmane.org
Original-Received: from mother.openwall.net ([195.42.179.200])
	by plane.gmane.org with smtp (Exim 4.69)
	(envelope-from <musl-return-1516-gllmg-musl=m.gmane.org@lists.openwall.com>)
	id 1Szy4f-000464-CJ
	for gllmg-musl@plane.gmane.org; Sat, 11 Aug 2012 00:52:57 +0200
Original-Received: (qmail 3571 invoked by uid 550); 10 Aug 2012 22:52:46 -0000
Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm
Precedence: bulk
List-Post: <mailto:musl@lists.openwall.com>
List-Help: <mailto:musl-help@lists.openwall.com>
List-Unsubscribe: <mailto:musl-unsubscribe@lists.openwall.com>
List-Subscribe: <mailto:musl-subscribe@lists.openwall.com>
Original-Received: (qmail 3561 invoked from network); 10 Aug 2012 22:52:46 -0000
Content-Disposition: inline
In-Reply-To: <20120810180814.GB27715@brightrain.aerifal.cx>
User-Agent: Mutt/1.4.2.3i
Xref: news.gmane.org gmane.linux.lib.musl.general:1515
Archived-At: <http://permalink.gmane.org/gmane.linux.lib.musl.general/1515>

On Fri, Aug 10, 2012 at 02:08:14PM -0400, Rich Felker wrote:
> Yes, -O3 includes -funroll-loops,

That's good.

BTW, for the version of code I posted last, going from -O2 to -O3 with
gcc 3 actually slows things down by about 8% on 32-bit x86.

> which is intelligent about choosing which loops to unroll.

Yes, except that it can't know if the function is performance-critical
or not.

Alexander