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Re: asm in inline function invalidating function attributes?

From: Andi Kleen <andi at firstfloor dot org>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: Andi Kleen <andi at firstfloor dot org>, Ulrich Drepper <drepper at gmail dot com>, gcc at gcc dot gnu dot org
Date: Mon, 17 Oct 2011 16:18:25 +0200
Subject: Re: asm in inline function invalidating function attributes?
References: <CAOPLpQc7=Qj=eR8ijiNiYcjNu2err+FfBDmy5LSJ0b7XJkyXUw@mail.gmail.com> <CAFiYyc04BDdnk_KJJxLai5H80YGRx-Rh4pnCaAuSx-qwd_h_0A@mail.gmail.com> <CAOPLpQd6PakAvm0H141Dpi7VeKWd7FC8EcvS6KqKst=_0-KyGA@mail.gmail.com> <m2wrc4zey3.fsf@firstfloor.org> <CAFiYyc17q7SwKHr9ax_QctbZOFzdsUHv3JqTi+0gZauZnd=3SQ@mail.gmail.com>

> > At least the Linux kernel has a couple such cases ("nasty inline asm to
> > hide register clobbering in calls") and it's always ugly and hard to
> > maintain.
> 
> It would simply be an alternate ABI that makes all registers callee-saved?

Yes exactly that.

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.

References:
- asm in inline function invalidating function attributes?
  - From: Ulrich Drepper
- Re: asm in inline function invalidating function attributes?
  - From: Richard Guenther
- Re: asm in inline function invalidating function attributes?
  - From: Ulrich Drepper
- Re: asm in inline function invalidating function attributes?
  - From: Andi Kleen
- Re: asm in inline function invalidating function attributes?
  - From: Richard Guenther

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