gnupic: SDCC
Subject:
Re: SDCC
From:
Ralf Forsberg ####@####.####
Date:
14 Nov 2001 07:05:19 -0000
Message-Id: <20011114080454.A21047@home.se>
On Wed, Nov 14, 2001 at 12:27:05PM +1100, matt wrote:
> On Tue, 13 Nov 2001 22:26, Ralf Forsberg wrote:
> > I've been writing a few tests for sdcc, and then bothering Scott
> > about those that don't work. As I did that I got curious about
> > how the generated code compared to other compilers.
> >
> > I tried my "alfa.c" on the pic compilers I could find, and then
> > measured execution time using gpsim. All compilers are demo versions
> > downloaded from the web. It may be that the regular versions are better,
> > but that seems strange.
> >
> > It may not say much, alfa.c perhaps is not the most 'average' program.
> >
> > accumulated cycles:
> > sdcc picc picc -O -Zg9 CCSC sdcc uchar mpc
> > init 2 0x145 0x143 ? 9
> > t1 0xc7 0x24a 0x214 0x76 0x5e ?
> > t2 0x708 0xbae 0x96b 0x46c 0x36c 0x9b3
> > t3 0x26303 0x3d381 0x2e3cd 0x1f7f6 0x14585 0x3fbbe
> >
Also, those numbers are misleading, since they count cycles from reset.
The "cycles per test" is better.ยง
> Ok, here's my thoughts. I would be VERY VERY VERY surprised if sdcc could
> beat all those compilers this well with Scott still developing it.
>
/ Ralf
