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Re: Average swaps per word?

From anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups comp.lang.forth
Subject Re: Average swaps per word?
Date 2016-11-09 08:16 +0000
Organization Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID <2016Nov9.091656@mips.complang.tuwien.ac.at> (permalink)
References <5352ea02-4942-40bf-8c92-e5012aae1807@googlegroups.com>

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trans <transfire@gmail.com> writes:
>Are there any statistics on the average swaps per word in Forth code?

You can derive them from the statistics in [gregg+01euroforth].
Figure 4 shows that 1.35%-2.14% of the static primitives in the
programs (excluding pentomino) are SWAP and 7.47%-10.22% are ;s (";"
or EXIT), resulting in 0.15-0.23 SWAPs/;s.  Multiply this by 1+x,
where x is the number of EXIT's per word.

@InProceedings{gregg+01euroforth,
  author =	 {David Gregg and M. Anton Ertl and John Waldron},
  title =	 {The Common Case in {Forth} Programs},
  booktitle =	 {EuroForth 2001 Conference Proceedings},
  pages =	 {63--70},
  year =	 {2001},
  url1 =	 {http://www.cs.tcd.ie/David.Gregg/euroforth01.ps.gz},
  url =          {http://www.complang.tuwien.ac.at/papers/gregg+01euroforth.ps.gz},
  abstract =	 {Identifying common features in Forth programs is
                  important for those designing Forth machines and
                  optimisers. In this paper we measure the behaviour
                  of six large Forth programs and four small ones. We
                  look at the ratio of user to system code, basic
                  block lengths, common instructions, and common
                  sequences of instructions. Our most important
                  finding is that for most large programs, many
                  (38.4\%--47.6\% statically and 21.8\%--40.9\%
                  dynamically) basic blocks consist of only a single
                  instruction, which hinders optimisation. We also
                  show static measures of frequent instructions and
                  sequences of instructions are more consistent across
                  programs, and may be a better predictor of the
                  behaviour of other programs than dynamic measures.}
}

- 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 2016: http://www.euroforth.org/ef16/

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Average swaps per word? trans <transfire@gmail.com> - 2016-11-08 22:03 -0800
  Re: Average swaps per word? "Elizabeth D. Rather" <erather@forth.com> - 2016-11-08 20:20 -1000
  Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-09 08:16 +0000
  Re: Average swaps per word? Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-11-09 03:34 -0500
    Re: Average swaps per word? trans <transfire@gmail.com> - 2016-11-09 02:53 -0800
      Re: Average swaps per word? rickman <gnuarm@gmail.com> - 2016-11-09 11:50 -0500
        Re: Average swaps per word? stephen@mpeforth.com (Stephen Pelc) - 2016-11-09 18:37 +0000
          Re: Average swaps per word? Harold <hzrabbie@gmail.com> - 2016-11-10 16:28 -0800
            Re: Average swaps per word? stephen@mpeforth.com (Stephen Pelc) - 2016-11-11 17:51 +0000
            Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-12 12:23 +0000
              Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-12 16:09 +0100
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-13 14:55 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-13 20:34 +0100
                Re: Average swaps per word? Paul Rubin <no.email@nospam.invalid> - 2016-11-13 11:43 -0800
                Re: Average swaps per word? hughaguilar96@gmail.com - 2016-11-13 16:58 -0800
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-14 16:41 +0100
                Re: Average swaps per word? hughaguilar96@gmail.com - 2016-11-14 16:38 -0800
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-14 17:42 +0000
                Re: Average swaps per word? Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-11-14 16:39 -0500
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-17 12:40 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-17 14:10 +0100
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-18 15:14 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-20 18:16 +0100
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-22 10:29 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-22 15:54 +0100
                Re: Average swaps per word? James Kuyper <jameskuyper@verizon.net> - 2016-11-22 11:50 -0500
                Re: Average swaps per word? raltbos@xs4all.nl (Richard Bos) - 2016-11-24 17:27 +0000
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-15 03:55 -0600
                Re: Average swaps per word? Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-11-15 17:49 -0500
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-16 02:59 -0600
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-17 13:07 +0000
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-16 22:57 +0000
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-17 03:12 -0600
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-17 12:32 +0100
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-18 15:02 +0000
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-17 13:23 +0000
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-17 08:54 -0600
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-18 15:54 +0000
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-18 12:37 -0600
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-14 17:32 +0000
                Re: Average swaps per word? Mark Wills <markwills1970@gmail.com> - 2016-11-15 02:09 -0800
                Re: Average swaps per word? jim <anon@example.com> - 2016-11-15 10:44 +0000
                Re: Average swaps per word? Mark Wills <markwills1970@gmail.com> - 2016-11-15 03:12 -0800
                Re: Average swaps per word? Alex <alex@rivadpm.com> - 2016-11-15 13:01 +0000
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-17 12:51 +0000
                Re: Average swaps per word? Alex <alex@rivadpm.com> - 2016-11-17 14:02 +0000
                Re: Average swaps per word? Alex <alex@rivadpm.com> - 2016-11-17 14:06 +0000
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-18 15:26 +0000
                Re: Average swaps per word? Alex <alex@rivadpm.com> - 2016-11-18 18:33 +0000
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-19 03:32 -0600
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-17 14:29 +0100
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-15 13:51 +0100
                Re: Average swaps per word? jim <anon@example.com> - 2016-11-15 13:01 +0000
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-17 12:46 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-17 14:16 +0100
              Re: Average swaps per word? Harold <hzrabbie@gmail.com> - 2016-11-13 11:08 -0800
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-14 17:08 +0000
                Re: Average swaps per word? Mark Wills <markwills1970@gmail.com> - 2016-11-15 02:04 -0800
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-15 14:04 +0100
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-15 14:05 +0100
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-17 12:58 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-17 15:16 +0100
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-18 15:41 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-20 18:12 +0100
  Re: Average swaps per word? minforth@arcor.de - 2016-11-09 03:15 -0800
    Re: Average swaps per word? trans <transfire@gmail.com> - 2016-11-09 11:22 -0800
    Re: Average swaps per word? "HAA" <someone@microsoft.com> - 2016-11-10 12:20 +1100
      Re: Average swaps per word? "Elizabeth D. Rather" <erather@forth.com> - 2016-11-09 21:04 -1000
      Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-10 03:45 -0600
        Re: Average swaps per word? rickman <gnuarm@gmail.com> - 2016-11-10 11:52 -0500
          Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-10 11:42 -0600
            Re: Average swaps per word? rickman <gnuarm@gmail.com> - 2016-11-10 13:34 -0500
              Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-10 12:54 -0600
                Re: Average swaps per word? rickman <gnuarm@gmail.com> - 2016-11-10 16:33 -0500
                Re: Average swaps per word? "Elizabeth D. Rather" <erather@forth.com> - 2016-11-10 15:56 -1000
                Re: Average swaps per word? rickman <gnuarm@gmail.com> - 2016-11-10 21:30 -0500
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-11 03:04 -0600
                Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-12 13:25 +0000
                Re: Average swaps per word? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-11-14 03:34 -0600
                Re: Average swaps per word? Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2016-11-11 10:41 +0000
                Re: Average swaps per word? hughaguilar96@gmail.com - 2016-11-11 16:45 -0800
      Re: Average swaps per word? jim <anon@example.com> - 2016-11-10 11:17 +0000
        Re: Average swaps per word? Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-11-10 04:34 -0800
          Re: Average swaps per word? jim <anon@example.com> - 2016-11-10 12:44 +0000
            Re: Average swaps per word? Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-11-10 07:27 -0800
              Re: Average swaps per word? Ron Aaron <rambamist@gmail.com> - 2016-11-10 18:26 +0200
              Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-10 16:05 +0000
        Re: Average swaps per word? stephen@mpeforth.com (Stephen Pelc) - 2016-11-10 14:55 +0000
          Re: Average swaps per word? "HAA" <someone@microsoft.com> - 2016-11-12 11:36 +1100
            Re: Average swaps per word? hughaguilar96@gmail.com - 2016-11-11 16:56 -0800
            Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-12 16:14 +0100
          Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-12 12:14 +0000
            Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-12 16:16 +0100
              Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-13 14:51 +0000
                Re: Average swaps per word? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-13 20:41 +0100
      Re: Average swaps per word? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-10 14:42 +0000
  Re: Average swaps per word? hughaguilar96@gmail.com - 2016-11-11 15:54 -0800

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