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Date: Tue, 07 Oct 2003 22:38:00 -0000
From: Michael Matz <matz@suse.de>
To: DJ Delorie <dj@redhat.com>
Cc: gcc@gcc.gnu.org
Subject: Re: switch question in recog.c
In-Reply-To: <200310072233.h97MXQQ14729@greed.delorie.com>
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Hi,

On Tue, 7 Oct 2003, DJ Delorie wrote:

> > Constructed useless example (i.e. not the usual memcpy() unrolling):
>
> Duff's device wasn't a memcpy() unrolling.

See again http://www.lysator.liu.se/c/duffs-device.html commenting from
Tom himself.  His initial posting was about the loop
	send(short *to, short *from, int count)
        { do *to = *from++; while(--count>0); }

That's basically a memcpy().  I'm not old enough to know if Tom really is
the inventor of this "use" of C features, but not even Tom remembers ;-)


Ciao,
Michael.