From:	Tom Burgess <Tom_Burgess AT bc DOT sympatico DOT ca>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: ints vs. shorts
Date:	Wed, 30 Apr 1997 08:33:48 -0700
Organization:	BCTEL Advanced Communications
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Message-ID:	<3367665C.3FE8@bc.sympatico.ca>
References:	<199704300400 DOT OAA22202 AT solwarra DOT gbrmpa DOT gov DOT au>
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To:	djgpp AT delorie DOT com
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Leath Muller wrote:
> 
> > I have heard that there is a performance difference between shorts
> > and ints.  If anyone could explain when and how much this matters,
> > I would be very grateful.  I'm just wondering whether to use ints
> > for everything, shorts for everything, or a mix.
> 
> Use int's - shorts have a 1 cycle stall on the pentium...
> 
> Leathal.

In addition, the V-pipe gets shut down, thus potentially costing
another cycle. (an instruction that could have executed in parallel
in the V-pipe is prevented from doing so). I would say use ints
by default and shorts only when required by external interfaces or
if the reduction in data space would help with on-chip (8K typ.) data
cache utilization.

	regards, tom

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