Re: RTX2000 optimization

From	"Rod Pemberton" <do_not_have@notemailnotz.cnm>
Newsgroups	comp.lang.forth
Subject	Re: RTX2000 optimization
Date	2012-10-25 00:50 -0400
Organization	Aioe.org NNTP Server
Message-ID	<k6ag6q$m45$1@speranza.aioe.org> (permalink)
References	<e1479cfa-a969-40ab-b20c-096d82601657@googlegroups.com> <k64svk$njr$1@speranza.aioe.org> <k672lj$82o$1@dont-email.me> <k68npd$9f7$1@speranza.aioe.org> <k69gf5$hic$1@dont-email.me>

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"rickman" <gnuarm@gmail.com> wrote in message
news:k69gf5$hic$1@dont-email.me...
> On 10/24/2012 8:47 AM, Rod Pemberton wrote:
...

> > For temporary reasons, most of my Forth stack operators, like DUP SWAP
> > etc, aren't currently low-level Forth "primitives".  They're implemented
> > in high-level Forth using an even lower set of actual stack
> > "primitives", which I'll call sub-operators for this thread.  These
> > sub-operators could be considered to be "stack assembly instructions"
> > for my Forth.  Currently, only>R and R>  are actually "primitives"
> > coded in C.  Eventually, DUP DROP SWAP OVER will be actual
> > low-level Forth "primitives", as they once were.
>
> Coded in 'C'?  Perhaps I missed something.  I was talking about a Forth
> like CPU.  Are you referring to a Forth compiler on a PC?
>

Yes.  You're talking about a Forth like CPU.  I'm talking about my Forth
interpreter in C.  I'm attempting to discuss similarities which are useful.

> > So, a word like OVER can be coded in many ways.  I have 22 different
> > definitions just for OVER in a list, and one can construct many more.
> > E.g.,
> >
> >   : OVER>R DUP R>  SWAP ;
> >   : OVER 1 PICK ;
> >   : OVER SWAP TUCK ;
> >   : OVER SWAP DUP -ROT ;
> >   : OVER NUP SWAP ;
> > etc.
>
> Yes it can, but why?  Over is a very simple construct for either a Forth
> like CPU or a Forth compiler.

If you implement it as a single instruction, that's great.  But, you're not
going to fit all Forth words into your instruction set.  So, some words are
going to be made up of multiple Forth words comprised of multiple
instructions.  This was just an example of how I went about optimizing such
a sequence.

Also, some Forth stack words don't fit most CPU's well.  For example, some
words shift a portion of the data on the stack, e.g., ROT TUCK.  Stack
shifts are not well suited to most processors.  Stacks can push or pop or
use other instructions to direct reads and writes, but shifts require a copy
routine.

> > Which definition you choose affects how fast OVER executes and depends
> > on what operations you have available and on how fast each of those
> > operations are.
> >
> > E.g., if>R>R DUP SWAP and -ROT are all very fast machine instructions
> > for your processor, then ">R DUP R>  SWAP" and "SWAP DUP -ROT"
> > should be fast sequences.  And, one sequence will be faster than the
> > other, depending on how fast each instruction is.  But, if -ROT is not a
> > machine instruction, e.g., perhaps coded as "ROT ROT" or "SWAP>R
> > SWAP R>", or -ROT is a very slow machine instruction, then "SWAP
> > DUP -ROT" is more expensive than ">R DUP R>  SWAP".
>
> I don't follow that a four instruction sequence should be "fast" in any
> real sense.  I don't follow at all why you would have -ROT as a
> primitive and not OVER.
>

You're going to be implementing instructions for your processor.  Which
instructions you implement and which you don't implement affects how each
Forth word is coded.  That affects their speed.

> > The instructions also need to be balanced acrossed many Forth words.
> > Originally, I had the 2xxx series words defined in terms of the simpler
> > stack operators, like SWAP DUP etc.  When I converted to sub-operators,
> > the number of operations per definition dropped dramatically for some
> > of the 2xxx definitions.  Since the sub-operators are primitives, some
> > of the 2xxx definitions became faster.  However, after converting all of
> > the simpler stack operators to sub-operators, a few of the non-primitive
> > simple stack operators ended up with more operations per definition.
> > So some words became much faster, while others became slightly slower.
> > And, the former primitives became real slow, but they'll be converted
> > back eventually.
>
> Not sure why you are looking at this.  If you want to optimize the
> implementation, why not look at what is used most often and start by
> optimizing those operators?  That is why I went to Koopman's book.  Not
> much return on optimizing things that aren't used so much.

There is no quarantee that the instruction frequencies will be the most used
in the code that will be run.  It merely demonstrates which was the most
used in the code that was sampled.

I.e., let's say I used Koopman's dynamic instruction frequencies to design a
processor.  TUCK isn't in the list.  So, I didn't put any effort into
optimizing TUCK.  TUCK is really slow and long sequence for my imaginary
processor.  Later, I fall in "love" with TUCK.  So, I begin to use it
everywhere in my imaginary Forth code.  Will my code be fast?  No.

The frequencies are only useful on the sampled code and similar code.  If
you're not using a code optimizer, then you (or your future users) are going
to have to selectively preference the optimized instructions over the
unoptimized.

Rod Pemberton

Thread

RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-10-22 08:53 -0700
  Re: RTX2000 optimization Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-10-22 11:21 -0500
  Re: RTX2000 optimization visualforth@rocketmail.com - 2012-10-22 09:56 -0700
    Re: RTX2000 optimization Mark Wills <forthfreak@gmail.com> - 2012-10-22 12:10 -0700
      Re: RTX2000 optimization visualforth@rocketmail.com - 2012-10-22 12:55 -0700
      Re: RTX2000 optimization Coos Haak <chforth@hccnet.nl> - 2012-10-22 22:02 +0200
      Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-22 16:50 -0400
        Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-22 21:52 -0400
          Re: RTX2000 optimization Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-10-22 22:03 -0700
            Re: RTX2000 optimization Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-10-23 03:19 -0500
              Re: RTX2000 optimization vandys@vsta.org - 2012-10-23 17:54 +0000
                Re: RTX2000 optimization Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-10-24 08:16 -0700
          Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-23 17:19 -0400
            Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-24 06:56 -0400
              Re: RTX2000 optimization anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-24 12:26 +0000
              Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-24 15:25 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-25 00:30 -0400
                Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-24 22:10 -0700
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-25 16:43 -0400
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-26 17:55 +0200
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-26 19:44 -0400
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-27 02:17 +0200
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-26 23:01 -0400
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-27 22:18 +0200
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-27 19:19 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-28 04:21 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-28 14:36 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-29 19:06 -0400
                Re: RTX2000 optimization Mark Wills <markrobertwills@yahoo.co.uk> - 2012-10-30 02:07 -0700
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-30 09:36 -0400
                Re: RTX2000 optimization Mark Wills <markrobertwills@yahoo.co.uk> - 2012-10-30 08:09 -0700
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-30 19:14 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-30 18:50 -0400
                Re: RTX2000 optimization daveyrotten <danw8804@gmail.com> - 2012-10-31 07:37 -0700
                Re: RTX2000 optimization stephenXXX@mpeforth.com (Stephen Pelc) - 2012-10-31 15:27 +0000
                Re: RTX2000 optimization daveyrotten <danw8804@gmail.com> - 2012-10-31 08:59 -0700
                Re: RTX2000 optimization Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-10-31 11:18 -0500
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-31 13:49 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-31 13:43 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-31 12:03 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Mark Wills <forthfreak@gmail.com> - 2012-10-31 09:05 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] daveyrotten <danw8804@gmail.com> - 2012-10-31 09:06 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-10-31 09:25 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] danw8804@gmail.com - 2012-10-31 09:38 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-10-31 14:30 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-10-31 14:27 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-10-31 12:01 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-10-31 16:31 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-10-31 20:33 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-01 14:05 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-01 11:23 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-01 14:31 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-02 22:11 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-03 12:50 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-03 10:42 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-03 13:59 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-03 12:10 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-03 15:42 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-03 15:56 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-03 20:53 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] stephenXXX@mpeforth.com (Stephen Pelc) - 2012-11-04 11:10 +0000
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-04 22:58 -0800
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-05 15:29 +0100
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-11-05 14:40 +0000
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-05 11:36 -0500
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-05 09:02 -0800
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-05 15:22 -0500
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-05 12:56 -0800
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-06 12:22 -0500
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-06 09:29 -0800
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-06 12:53 -0500
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-06 10:00 -0800
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] "Elizabeth D. Rather" <erather@forth.com> - 2012-11-06 08:04 -1000
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-06 13:37 -0500
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-05 21:06 +0100
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-05 15:29 -0500
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-06 16:28 +0100
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] rickman <gnuarm@gmail.com> - 2012-11-06 12:50 -0500
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-07 20:29 -0800
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] albert@spenarnc.xs4all.nl (Albert van der Horst) - 2012-11-04 10:40 +0000
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-01 21:26 +0100
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] Paul Rubin <no.email@nospam.invalid> - 2012-11-01 13:44 -0700
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-11-02 04:03 -0400
                Re: Xula-200 or Raspberry-Pi a better buy?, was [Re: RTX2000 optimization] David Schultz <abuse@127.0.0.1> - 2012-11-04 17:17 -0600
                Re: RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-11-02 12:48 -0700
                Re: RTX2000 optimization "Elizabeth D. Rather" <erather@forth.com> - 2012-11-02 10:25 -1000
                Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-11-02 19:54 -0700
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-03 17:47 +0100
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-11-03 14:05 -0400
                Re: RTX2000 optimization anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-11-05 11:55 +0000
                Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-11-03 19:20 -0700
                Re: RTX2000 optimization mhx@iae.nl (Marcel Hendrix) - 2012-11-04 16:08 +0200
                Re: RTX2000 optimization mhx@iae.nl (Marcel Hendrix) - 2012-11-04 17:14 +0200
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-04 18:40 +0100
                Re: RTX2000 optimization Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-11-04 09:36 -0600
                Re: RTX2000 optimization Andy Valencia <vandys@vsta.org> - 2012-11-04 23:49 +0000
                Re: RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-10-31 12:11 -0700
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-31 20:08 -0400
                Re: RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-11-01 10:59 -0700
                Re: RTX2000 optimization daveyrotten <danw8804@gmail.com> - 2012-11-01 12:12 -0700
                Re: RTX2000 optimization daveyrotten <danw8804@gmail.com> - 2012-11-01 12:14 -0700
                Re: RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-11-02 10:51 -0700
                Re: RTX2000 optimization daveyrotten <danw8804@gmail.com> - 2012-11-02 11:28 -0700
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-11-01 14:58 -0400
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-28 14:45 +0100
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-28 15:04 -0400
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-28 21:09 +0100
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-28 16:59 -0400
                Re: RTX2000 optimization albert@spenarnc.xs4all.nl (Albert van der Horst) - 2012-10-28 07:59 +0000
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-28 15:06 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-25 16:35 -0400
        Re: RTX2000 optimization anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-23 12:44 +0000
          Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-23 17:32 -0400
  Re: RTX2000 optimization daveyrotten <danw8804@gmail.com> - 2012-10-22 13:54 -0700
    Re: RTX2000 optimization visualforth@rocketmail.com - 2012-10-22 14:14 -0700
      Re: RTX2000 optimization daveyrotten <danw8804@gmail.com> - 2012-10-22 14:26 -0700
        Re: RTX2000 optimization visualforth@rocketmail.com - 2012-10-22 16:00 -0700
  Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-22 21:51 -0400
    Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-23 17:36 -0400
      Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-24 08:47 -0400
        Re: RTX2000 optimization Alex McDonald <blog@rivadpm.com> - 2012-10-24 06:36 -0700
          Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-24 15:33 -0400
            Re: RTX2000 optimization Alex McDonald <blog@rivadpm.com> - 2012-10-25 04:54 -0700
              Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-25 17:35 -0400
                Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-25 15:27 -0700
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-25 19:10 -0400
                Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-25 18:34 -0700
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-26 19:03 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-26 19:56 -0400
              Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-26 18:34 +0200
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-26 22:27 +0200
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-26 19:27 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-26 19:17 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-26 19:44 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-26 19:59 -0400
          Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-25 00:42 -0400
            Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-25 00:55 -0400
            Re: RTX2000 optimization Alex McDonald <blog@rivadpm.com> - 2012-10-25 04:49 -0700
          addressable stack, was [Re: RTX2000 optimization] "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-11-05 14:04 -0500
        Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-24 15:44 -0400
          Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-25 00:50 -0400
            Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-25 18:58 -0400
              Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-25 16:07 -0700
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-25 19:20 -0400
              Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-26 20:57 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-27 15:43 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-28 05:01 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-28 15:23 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-29 19:32 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-30 19:00 -0400
                Re: RTX2000 optimization "Rod Pemberton" <do_not_have@notemailnotz.cnm> - 2012-10-31 01:23 -0400
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-31 14:56 -0400
  Re: RTX2000 optimization visualforth@rocketmail.com - 2012-10-22 19:44 -0700
    Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-23 17:47 -0400
      Re: RTX2000 optimization visualforth@rocketmail.com - 2012-10-23 16:00 -0700
        Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-23 21:07 -0400
          Re: RTX2000 optimization visualforth@rocketmail.com - 2012-10-23 18:44 -0700
            Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-24 16:03 -0400
              Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-24 13:15 -0700
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-24 16:25 -0400
              Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-26 03:15 +0200
      Re: RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-10-24 09:55 -0700
        Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-24 10:04 -0700
          Re: RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-10-24 12:00 -0700
            Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-24 23:24 -0700
              Re: RTX2000 optimization Brad Eckert <hwfwguy@gmail.com> - 2012-10-25 09:26 -0700
                Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-25 10:39 -0700
                Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-25 19:35 -0400
                Re: RTX2000 optimization Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-26 18:26 +0200
          Re: RTX2000 optimization rickman <gnuarm@gmail.com> - 2012-10-24 16:10 -0400
            Re: RTX2000 optimization Paul Rubin <no.email@nospam.invalid> - 2012-10-24 13:21 -0700
  Re: RTX2000 optimization stephenXXX@mpeforth.com (Stephen Pelc) - 2012-10-23 10:52 +0000

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