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Re: Arranging for -Os to imply -mpreferred-stack-boundary=2 on x86

To: Jan Hubicka <jh at suse dot cz>
Subject: Re: Arranging for -Os to imply -mpreferred-stack-boundary=2 on x86
From: Alexandre Oliva <aoliva at redhat dot com>
Date: 23 Oct 2001 10:35:34 -0200
Cc: gcc-patches at gcc dot gnu dot org
Organization: GCC Team, Red Hat
References: <ork7xmbrxp.fsf@free.redhat.lsd.ic.unicamp.br><20011023141455.C31955@atrey.karlin.mff.cuni.cz>

On Oct 23, 2001, Jan Hubicka <jh@suse.cz> wrote:

> Problem of this sollution is combining -Os modules with -O2.

Yup.  But mixing object files compiled with different
preferred-stack-boundaries has been documented for a while.

That's why I suggested to introduce the attribute, so that a function
can restore the preferred alignment.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

References:
- Arranging for -Os to imply -mpreferred-stack-boundary=2 on x86
  - From: Alexandre Oliva
- Re: Arranging for -Os to imply -mpreferred-stack-boundary=2 on x86
  - From: Jan Hubicka

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