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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MIME-Version:	1.0
To:	pgcc AT delorie DOT com
Subject:	Re: Benchmark PGCC vs EGCS on a K6-2
References:	<373F3AA2 DOT A446D611 AT informatik DOT hu-berlin DOT de> <Pine DOT LNX DOT 4 DOT 10 DOT 9905181826020 DOT 1284-100000 AT data DOT mandrakesoft DOT com> <19990519105631 DOT 40676 AT atrey DOT karlin DOT mff DOT cuni DOT cz> <3743ADE8 DOT C938ADBB AT informatik DOT hu-berlin DOT de> <19990520104723 DOT 18724 AT atrey DOT karlin DOT mff DOT cuni DOT cz>
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

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