From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28130 invoked by alias); 15 Sep 2002 06:12:02 -0000 Mailing-List: contact binutils-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: binutils-owner@sources.redhat.com Received: (qmail 28121 invoked from network); 15 Sep 2002 06:12:01 -0000 Received: from unknown (HELO lacrosse.corp.redhat.com) (66.187.233.200) by sources.redhat.com with SMTP; 15 Sep 2002 06:12:01 -0000 Received: from free.redhat.lsd.ic.unicamp.br (aoliva2.cipe.redhat.com [10.0.1.156]) by lacrosse.corp.redhat.com (8.11.6/8.9.3) with ESMTP id g8F6BR824621; Sun, 15 Sep 2002 02:11:27 -0400 Received: from free.redhat.lsd.ic.unicamp.br (localhost.localdomain [127.0.0.1]) by free.redhat.lsd.ic.unicamp.br (8.12.5/8.12.5) with ESMTP id g8F6BQsx018111; Sun, 15 Sep 2002 03:11:26 -0300 Received: (from aoliva@localhost) by free.redhat.lsd.ic.unicamp.br (8.12.5/8.12.5/Submit) id g8F6BPU5018107; Sun, 15 Sep 2002 03:11:25 -0300 To: Thiemo Seufer Cc: binutils@sources.redhat.com, echristo@redhat.com Subject: Re: MIPS assembler branch relaxations References: <20020914151121.GA7853@nevyn.them.org> <20020915003519.GA528@rembrandt.csv.ica.uni-stuttgart.de> <20020915051826.GA20322@rembrandt.csv.ica.uni-stuttgart.de> From: Alexandre Oliva Organization: GCC Team, Red Hat Date: Sun, 15 Sep 2002 03:38:00 -0000 In-Reply-To: <20020915051826.GA20322@rembrandt.csv.ica.uni-stuttgart.de> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-SW-Source: 2002-09/txt/msg00245.txt.bz2 On Sep 15, 2002, Thiemo Seufer wrote: > Alexandre Oliva wrote: >> On Sep 14, 2002, Thiemo Seufer wrote: >> >> >> Why beqzl? Admittedly, I don't know much about MIPS hardware, but I'd >> >> think that just "b" would probably be faster, since that's the normal >> >> unconditional branch. >> >> > "b" isn't a valid opcode. :-) >> >> Right. `b foo' is just a shorthand for `beq $0, $0, foo' >> >> > Btw, "beqzl" also isn't one. >> >> Huh? Please check your ISA manual again. It surely is there. > Definitly not for MIPS IV and earlier. Eeek! I apologize. You're of course right. I don't know where I got this idea that beqzl existed but beql did not. I even wrote about beql myself, but apparently I did so in DMA mode :-) > Ok, then it would be "beql". Agreed, patch adjusted. -- Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/ Red Hat GCC Developer aoliva@{redhat.com, gcc.gnu.org} CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org} Free Software Evangelist Professional serial bug killer