Sender: jur AT rz DOT hu-berlin DOT de
Message-ID: <374515C3.DD91DD72@informatik.hu-berlin.de>
Date: Fri, 21 May 1999 08:13:55 +0000
From: Jens-Uwe Rumstich <rumstich AT informatik DOT hu-berlin DOT de>
Organization: TUSCON
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To: pgcc AT delorie DOT com
Subject: Re: Benchmark PGCC vs EGCS on a K6-2
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Reply-To: pgcc AT delorie DOT com

Hi!

> > ooops... The mov is not faster?
> >
> Only advantage of mov is reduced dependency on flags. But this advantage is not
> high enought to mask code size increase and decoder slowdown caused by very
> large opcode.

But a MOV REG,Immediate is a short instruction and gets executed during
the
decode phase. So except the larger opcode it should be faster...
Strange, I
think I should try it out...


> > Do you know a way to get exact numbers? I still donīt know, why my
> > results are that wrong :-(
> Hmm... don't know. You might also try out egcs benchmark suite. It gets
> lots of results and they are pretty exact (at least for me) and useable for
> tunning the compiler. Take a look at egcs homepage to get it...

I didnīt know it... I give it a try :-)

> Honza

cu
	Jens-Uwe