Groups > comp.lang.forth > #19236

Re: About stack access profundity

From	anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups	comp.lang.forth
Subject	Re: About stack access profundity
Date	2013-01-29 08:20 +0000
Organization	Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID	<2013Jan29.092047@mips.complang.tuwien.ac.at> (permalink)
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Andrew Haley <andrew29@littlepinkcloud.invalid> writes:
>Pablo Hugo Reda <pabloreda@gmail.com> wrote:
>In addition, there is no reason that a decent optimizer will produce
>much worse code for @ than for PICK .

There's a good reason why decent compilers will produce worse code for
@ than for PICK.  Whether the worseness is "much" or not can be
debated forever without resolution, so let's not go there.

We have a Forth language feature that makes it relatively easy for
compilers to produce as fast native code as when using PICK: locals.
I am not sure if there are Forth compilers yet that are up to that.
There are quite a number of locals-haters around here, some arguing
that locals are foreign (as in "from another programming language"),
some that they make it possible to get away with badly factored code.

For this application, the badly-factored code argument may be
applicable, but have we seen better-factored code?  If we have
better-factored code that produces slower native code, we could think
about whether some new language feature might reconcile good factoring
with good native code.

- anton
-- 
M. Anton Ertl  http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
     New standard: http://www.forth200x.org/forth200x.html
   EuroForth 2012: http://www.euroforth.org/ef12/

Thread

About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-27 12:11 -0800
  Re: About stack access profundity humptydumpty <ouatubi@gmail.com> - 2013-01-28 00:59 -0800
    Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-28 07:17 -0800
  Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-28 03:10 -0600
    Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-28 07:23 -0800
      Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-28 10:46 -0600
        Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 08:20 +0000
          Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 03:25 -0600
            Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 09:47 +0000
              Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 04:08 -0600
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 15:21 +0000
                Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 09:57 -0600
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 17:01 +0000
                Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 12:22 -0600
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-30 17:40 +0000
                Re: About stack access profundity Paul Rubin <no.email@nospam.invalid> - 2013-01-30 11:49 -0800
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-02-04 16:39 +0000
                Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-30 16:32 -0600
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-31 16:02 +0000
                Re: About stack access profundity stephenXXX@mpeforth.com (Stephen Pelc) - 2013-01-29 17:06 +0000
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 17:58 +0000
                Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-01-29 12:29 -0600
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-30 17:22 +0000
                Re: About stack access profundity Bernd Paysan <bernd.paysan@gmx.de> - 2013-01-29 20:17 +0100
                Re: About stack access profundity mhx@iae.nl (Marcel Hendrix) - 2013-01-29 21:44 +0200
                Re: About stack access profundity Bernd Paysan <bernd.paysan@gmx.de> - 2013-01-29 22:14 +0100
                Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-30 16:29 +0000
                Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-30 09:58 -0800
                Re: About stack access profundity stephenXXX@mpeforth.com (Stephen Pelc) - 2013-01-31 12:32 +0000
                Re: About stack access profundity Bernd Paysan <bernd.paysan@gmx.de> - 2013-01-31 15:37 +0100
                Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-01-29 23:12 -0800
          Re: About stack access profundity stephenXXX@mpeforth.com (Stephen Pelc) - 2013-01-29 10:08 +0000
            Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-29 07:10 -0800
            Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 15:17 +0000
      Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-01-29 00:57 -0800
  Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-01-28 01:56 -0800
  Re: About stack access profundity anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-01-29 15:30 +0000
    Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-01-29 09:06 -0800
  Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-02-03 06:22 -0800
    Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-02-03 07:25 -0800
      Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-02-03 15:51 -0800
        Re: About stack access profundity Coos Haak <chforth@hccnet.nl> - 2013-02-04 01:12 +0100
    Re: About stack access profundity Mark Wills <forthfreak@gmail.com> - 2013-02-03 23:10 -0800
      Re: About stack access profundity Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-02-04 03:26 -0600
  Re: About stack access profundity humptydumpty <ouatubi@gmail.com> - 2013-02-03 11:26 -0800
    Re: About stack access profundity Pablo Hugo Reda <pabloreda@gmail.com> - 2013-02-03 15:49 -0800

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