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Re: How reliable is GCC-3.3.1 wrt building mipsel-linux kernel?

To: David Daney <ddaney@avtrex.com>
Subject: Re: How reliable is GCC-3.3.1 wrt building mipsel-linux kernel?
From: Daniel Jacobowitz <dan@debian.org>
Date: Tue, 18 Nov 2003 20:49:29 -0500
Cc: linux-mips@linux-mips.org
In-reply-to: <3FBACA0F.7070207@avtrex.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <3FBACA0F.7070207@avtrex.com>
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On Tue, Nov 18, 2003 at 05:40:31PM -0800, David Daney wrote:
> The subject line kind of says it all.
> 
> We are running linux 2.4.18 on a mips4Kc core (ATI Xilleon 225) and find 
> it to be quite stable when compiled with gcc 2.96/binutils 2.11.92.0.10
> 
> When the kernel is compiled with gcc 3.3.1/binutils 2.14.90.0.5 it also 
> seems to be quite stable, except for when one certian driver is used 
> (basically an mpeg decoder driver).  Under certian conditions the system 
> seems to "freeze" (no messages printed anywhere and only a hard reset 
> will recover).
> 
> Yeah that is a good bug report...
> 
> But my main question is this:  Have other people experienced 
> miscompilation (ie bad code generation) with gcc 3.3.1?
> 
> One thing I am aware of is that if -fno-common is not used, bad code is 
> generated for accessing some large structures.  But I we use -fno-common 
> for all compilation.
> 
> I am trying to figrue out if I should be looking more at bugs in the 
> driver, or if I should give up on gcc 3.3.1 and be done with it.
> 
> Thanks in advance for any insight.

We haven't had problems here.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

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