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Mail Archives: pgcc/1999/03/01/09:01:37

Sender: root AT eduserv1 DOT rug DOT ac DOT be
Message-ID: <36DA64A8.5EEBA3B0@rug.ac.be>
Date: Mon, 01 Mar 1999 10:58:00 +0100
From: Marc Palmans <marc DOT palmans AT rug DOT ac DOT be>
X-Mailer: Mozilla 4.07 [en] (X11; I; Linux 2.2.2 i686)
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To: pgcc AT delorie DOT com
Subject: Re: loop unrolling
References: <199902241423 DOT JAA29290 AT envy DOT delorie DOT com> <19990225235232 DOT C20417 AT cerebro DOT laendle>
Reply-To: pgcc AT delorie DOT com

Marc Lehmann wrote:
> > From: =?iso-8859-1?Q?Johnny_Teve=DFen?= <j DOT tevessen AT gmx DOT de>
> > of the loop, the FPU is nearly totally left alone (well, I don't think
> > the load-"d"-from-stack still occupies it here). And is the pentiumpro
> > (i686) really capable of collecting 6 fp multiplications in its queue?
> 
> Yes ;)

Is this because of the out of order execution ? In one of the manuals it
states that the execution unit cannot accept another fmul after the
cycle it has accepted the first or am I missing something.
Where in the source can I find this (okay, I'm new at this :), in the
machine description I can only find a reference to the execution units. 

Greets,
Marc

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