From: Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: [long] gcc performance and possible bug
Organization: Pin Eight Software  http://pineight.8m.com/
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References: <39046544 DOT ADB90632 AT inti DOT gov DOT ar> <200004271315 DOT JAA03722 AT delorie DOT com> <3908A05C DOT 26F9B8B4 AT inti DOT gov DOT ar>
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NNTP-Posting-Date: Mon, 01 May 2000 13:16:47 GMT
Distribution: world
Date: Mon, 01 May 2000 13:16:47 GMT
To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

On Thu, 27 Apr 2000 17:17:33 -0300, salvador <salvador AT inti DOT gov DOT ar>
wrote:

>Dieter Buerssner wrote:
>
>> Is there a switch for gcc, that causes it not to store const data
>> in the code segment. This might help not only my AMD CPU, but also
>> other CPUs, as Eli reported a 1:3 speed difference with P166.
>
>Well, it seems it will help only when the constant is too close to the
>function.
>To the question: don't know.
>
>> It may even be desirable to default to such a switch for special
>> -mcpu or for compiling with -O and without -g.
>
>But you'll lose protection. Try writing to a constant in Linux,
>I just checked and got a Segmentation fault.

What about moving all static constants to the _end_ of a code segment?
Does this sound good enough to suggest to the GCC folks?

-- 
Damian Yerrick
"I refuse to listen to those who refuse to listen to reason."
See the whole sig: http://www.rose-hulman.edu/~yerricde/sig.html

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