Date: Tue, 26 Apr 2005 16:11:02 +0200 From: Bernd Walter <ticso@cicely12.cicely.de> To: Jan Lentfer <Jan.Lentfer@web.de> Cc: freebsd-alpha@freebsd.org Subject: Re: /boot/loader and optimization Message-ID: <20050426141101.GW15151@cicely12.cicely.de> In-Reply-To: <20050426151816.tjciigz6884csw88@gw0> References: <20050426151816.tjciigz6884csw88@gw0>
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On Tue, Apr 26, 2005 at 03:18:16PM +0200, Jan Lentfer wrote: > Hi all, > > I havn't been on the list for quit a long time due to lack of time, so maybe my > questions are long answered. If so, I aplogozie. > > Today I updated my PWS 500a to 5.3-RELEASE-p10 (from -p2). This time I used > CFLAGS= -O2 -pipe -fexpensive-optimizations -funroll-loops (before just -O > -pipe). The result was that the machine did not boot after upgrade with the > message halt code = 2 kernel stack not valid halt. > Isn't -O2 supposed to be supported with 5.x on Alpha? It could be that -funroll-loops got the bootcode too big. I don't see very much sense in doing so anyway. Use -O2 -pipe -fno-strict-aliasing as maximum. I personally never had problems with strict aliasing, but it is advised, so I disable it for important machines. -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.de
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