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Mail Archives: djgpp/2000/01/06/11:57:32

Date: Thu, 6 Jan 2000 12:07:50 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Kalum Somaratna aka Grendel <kalum AT newmail DOT net>
cc: djgpp AT delorie DOT com
Subject: Re: Why did ID choose DJGPP for Quake?
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On Wed, 5 Jan 2000, Kalum Somaratna aka Grendel wrote:

> I too like Watcom (it was my first compiler for developing 32bit 
> extended dos apps) and IMHO the code produced by Watcom 
> version 10.x was better than GCC 2.81. 

AFAIK, Watcom 10.x was roughly identical to GCC 2.8.1.

> However I haven't checked about the 2.952 versions of GCC and 
> there optimisations.

GCC 2.9x produces faster code than Watcom does.  It's all on SET's
compiler comparison page, just read there.

> I might be wrong but I don't think there would be any on this 
> newsgroup using a 386+287 for serious work in 2000.

You would be wrong.  Search this news group's archives, and you will
see.

> It is indeed suprising how much software  (which cannot practically 
> be run on a 386) for example that trash windoze, are compiled 
> using only 386 specific instructions. IMHO they really shoud ditch 
> 386 and consider optimizing for at least the 486 and using 486 
> specific intructions (the ideal would be pentium specific 
> instructions).

You aren't talking about DJGPP, are you?  Because DJGPP library and
utilities are compiled with -m486 switch.  The only reason we don't
compile with -mpentium is because we still didn't switch to GCC 2.9x
for building the library, and versions of GCC before 2.9x didn't
support Pentium-specific optimizations.

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