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Re: [Qemu-devel] [PATCH] Add gcc 4.0 support

From: Thiemo Seufer
Subject: Re: [Qemu-devel] [PATCH] Add gcc 4.0 support
Date: Wed, 29 Mar 2006 10:59:47 +0100
User-agent: Mutt/1.5.11+cvs20060126

On Tue, Mar 28, 2006 at 08:26:27PM -0800, John Davidorff Pell wrote:
> Out of curiosity, wouldn't it be better to specifically request that  
> feature of gcc, with one of its myriad options, rather than forcing a  
> rather large optimization sweep? I'm sure that -O2 is good generally,  
> but using it as a kludge to get at one of the many things that it  
> enables seems like a not-so-great-idea. Its like buying a restaurant  
> so that you can get a chef's stove.

Well, I went through the ppc disassembly and found no reason to
disable -O2. Note that it was the default before, I only noticed
the breakage when I lowered the global optimisation to -O0 for better


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