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From: "agner at agner dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/13685] Building simple test application with -march=pentium3 -Os gives SIGSEGV (unaligned sse instruction)
Date: Sat, 23 Sep 2006 08:23:00 -0000	[thread overview]
Message-ID: <20060923082322.7004.qmail@sourceware.org> (raw)
In-Reply-To: <bug-13685-7709@http.gcc.gnu.org/bugzilla/>



------- Comment #26 from agner at agner dot org  2006-09-23 08:23 -------
Thank you for fixing this, but you need to tell the world which solution you
have chosen. Please see the discussion at the dublicate bug
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27537 for arguments for and against
each possible solution.

You need to specify whether the chosen solution is to enforce 16 byte stack
alignment regardless of -Os option or the solution is to make no assumption
about stack alignment when making XMM code. This is an ABI issue that has to be
standardized and made public. The makers of the Intel compiler are waiting for
a resolution to this issue so that they can make their compiler compatible with
GCC. For the same reason, assembly programmers need to know whether stack
alignment is required or not.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13685


  parent reply	other threads:[~2006-09-23  8:23 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-13685-7709@http.gcc.gnu.org/bugzilla/>
2006-02-21 12:38 ` belyshev at depni dot sinp dot msu dot ru
2006-02-21 12:45 ` belyshev at depni dot sinp dot msu dot ru
2006-02-21 12:51 ` belyshev at depni dot sinp dot msu dot ru
2006-02-22 10:15 ` uros at kss-loka dot si
2006-02-22 11:31 ` roger dot larsson at norran dot net
2006-09-07 19:45 ` jason at gcc dot gnu dot org
2006-09-07 20:24 ` jason at gcc dot gnu dot org
2006-09-08  0:28 ` jason at gcc dot gnu dot org
2006-09-08  0:46 ` hjl at lucon dot org
2006-09-11 21:34 ` hjl at gcc dot gnu dot org
2006-09-12  2:55 ` hjl at gcc dot gnu dot org
2006-09-22 22:42 ` jason at gcc dot gnu dot org
2006-09-22 22:54 ` vapier at gentoo dot org
2006-09-23  8:23 ` agner at agner dot org [this message]
2007-07-23  0:07 ` vda dot linux at googlemail dot com
2004-01-14 18:28 [Bug c++/13685] New: Building KDE3.2 clock applet with -march=pentium3 -O1 gives SIGSEGV roger dot larsson at norran dot net
2005-01-07  9:49 ` [Bug target/13685] Building simple test application with -march=pentium3 -Os gives SIGSEGV (unaligned sse instruction) roger dot larsson at norran dot net

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