From:	"Russ Williams" <russ AT algorithm DOT demon DOT co DOT uk>
Newsgroups:	comp.lang.c++,comp.os.msdos.djgpp,rec.games.programmer
Subject:	Re: The numer 1 compiler, DJGPP or MSVC Here's a good rating comparision
Date:	17 Sep 1997 10:19:39 GMT
Organization:	UUNet UK server (post doesn't reflect views of UUNet UK)
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Herman Schoenfeld <you AT somehost DOT somedomain> wrote in article
<341f7974 DOT 0 AT 139 DOT 134 DOT 5 DOT 33>...
> In article <01bcc27c$add7b720$2b40cbc2 AT russnt>, >
russ AT algorithm DOT demon DOT co DOT uk 
> says...
[...]
> >I think that was the point. Terminal Velocity / Fury 3 aren't likely to
be 
> >significantly different, are they? The inner loops will still be
assembly,
> >so the compiler will make sod all difference.
> >
> 
> No russ. The compiler will make a drastic difference. If not then the
games 
> should be equal in performance. Even when the watcom version tested on a 
> machine 5 times slower than the other test machines it still manages to 
> outperform fury 3! 

HOW IS THIS THE COMPILER'S FAULT? (Yes, I do mean that as shouting).

Do you have the faintest idea of how games are written? The inner loops, 
which would take about 90% of the CPU time are likely to be written in
assembly. The compiler cannot affect the speed of this (since very few even
attempt to optimise assembly - end even then, only inline stuff).
Therefore,
the compiler can only affect the speed of 10% (by time) of the game - and 
obviously, that won't make a big difference.

---
Russ

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