From: Jim Wilson <wilson@specifixinc.com>
To: linux-ia64@vger.kernel.org
Subject: Re: Unwind bug on out of line code called from leaf functions
Date: Thu, 27 Nov 2003 06:52:50 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106997302626988@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-106989195923088@msgid-missing>
On Wed, 2003-11-26 at 20:28, David Mosberger wrote:
> gcc-3.3.2 also can handle ar.pfs clobbers, so we may just want to
> update the kernel code to be a bit more premissive and not insist on
> >= gcc-3.4. I'm not exactly sure though when this got fixed, so
> somebody would have to look into that first.
The patch is in gcc-3.3.0. See Richard Henderson's 2003-04-26 ia64
change in gcc. However, that patch resulted in an ICE in some other
cases, and unnecessary saves/restores of ar.pfs, see gcc PR 10681. The
patch for that is in gcc-3.3.1. See Richard Henderson's 2003-06-26
change in gcc.
It would be reasonable to just check for >= gcc-3.3 for use of this
feature. I wouldn't recommend using gcc-3.3.0 though.
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com
next prev parent reply other threads:[~2003-11-27 6:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-27 0:12 Unwind bug on out of line code called from leaf functions Keith Owens
2003-11-27 0:32 ` David Mosberger
2003-11-27 1:12 ` Keith Owens
2003-11-27 1:34 ` David Mosberger
2003-11-27 4:28 ` David Mosberger
2003-11-27 6:52 ` Jim Wilson [this message]
2003-12-11 1:21 ` David Mosberger
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