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Re: gcc-2.96-99 optimization bug?

To: Atsushi Nemoto <nemoto@toshiba-tops.co.jp>
Subject: Re: gcc-2.96-99 optimization bug?
From: "H . J . Lu" <hjl@lucon.org>
Date: Fri, 8 Feb 2002 10:30:47 -0800
Cc: linux-mips@oss.sgi.com
In-reply-to: <20020208.193731.48536791.nemoto@toshiba-tops.co.jp>; from nemoto@toshiba-tops.co.jp on Fri, Feb 08, 2002 at 07:37:31PM +0900
References: <20020208.193731.48536791.nemoto@toshiba-tops.co.jp>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.2.5i
On Fri, Feb 08, 2002 at 07:37:31PM +0900, Atsushi Nemoto wrote:
> I found gcc 2.96 (gcc-2.96-99.1.mipsel.rpm in H.J.Lu's RedHat 7.1)
> outputs wrong code for this short program.
> 
> It seems one 'bnez' in good code (at 4007c4) was lost in bad code.
> 
> Is this a know problem?  If so, is there any patches available?
> 

gcc 3.1 seems fine. No one is working on gcc 2.96. I am working on
a new Linuxx/mips which will use gcc 3.1.


H.J.

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