From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18249 invoked by alias); 23 Dec 2004 22:27:30 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 18193 invoked by alias); 23 Dec 2004 22:27:23 -0000 Date: Thu, 23 Dec 2004 22:27:00 -0000 Message-ID: <20041223222723.18192.qmail@sourceware.org> From: "hubicka at ucw dot cz" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20041222143844.19131.rguenth@tat.physik.uni-tuebingen.de> References: <20041222143844.19131.rguenth@tat.physik.uni-tuebingen.de> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug target/19131] alloca returning unnecessarily aligned pointer and uses too much memory X-Bugzilla-Reason: CC X-SW-Source: 2004-12/txt/msg03398.txt.bz2 List-Id: ------- Additional Comments From hubicka at ucw dot cz 2004-12-23 22:27 ------- Subject: Re: alloca returning unnecessarily aligned pointer and uses too much memory > > ------- Additional Comments From rguenth at tat dot physik dot uni-tuebingen dot de 2004-12-23 22:23 ------- > Subject: Re: alloca returning unnecessarily aligned pointer > and uses too much memory > > pinskia at gcc dot gnu dot org wrote: > > ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-22 15:06 ------- > > The reason you cannot find anything in the C standard is because this is ABI thing so this is invalid > > Where is the ABI specified? Is it the "System V ABI, Intel386 > Architecture Processor Supplement" document I found at > http://www.caldera.com/developers/devspecs/abi386-4.pdf? > This one talks about word-alignment of the stack, not 16 byte alignment. We keep the stack 16 byte aligned as an extension to support SSE.... Honza > > > We need to keep the stack aligned sorry. > > > -- > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19131 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19131