Re: Algorithm Optimization

Hans-Peter Diettrich <DrDiettrich1@netscape.net>
Thu, 17 Sep 2020 06:35:47 +0200

          From comp.compilers
Related articles
[4 earlier articles]
Re: Algorithm Optimization gah4@u.washington.edu (gah4) (2020-09-15)
Re: Algorithm Optimization mwmarkland@gmail.com (mwmarkland@gmail.com) (2020-09-16)
Re: Algorithm Optimization rick.c.hodgin@gmail.com (Rick C. Hodgin) (2020-09-16)
Re: Algorithm Optimization derek@_NOSPAM_knosof.co.uk (Derek M. Jones) (2020-09-16)
Re: Algorithm Optimization gah4@u.washington.edu (gah4) (2020-09-16)
Re: Algorithm Optimization richard.nospam@gmail.com (Richard Harnden) (2020-09-16)
Re: Algorithm Optimization DrDiettrich1@netscape.net (Hans-Peter Diettrich) (2020-09-17)
Re: Algorithm Optimization tkoenig@netcologne.de (Thomas Koenig) (2020-09-17)
Re: Algorithm Optimization minforth@arcor.de (A. K.) (2020-09-21)
Re: Algorithm Optimization DrDiettrich1@netscape.net (Hans-Peter Diettrich) (2020-12-13)
Re: Algorithm Optimization gah4@u.washington.edu (gah4) (2020-12-20)
Re: Algorithm Optimization johann@myrkraverk.com (Johann 'Myrkraverk' Oskarsson) (2021-04-21)
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From: Hans-Peter Diettrich <DrDiettrich1@netscape.net>
Newsgroups: comp.compilers
Date: Thu, 17 Sep 2020 06:35:47 +0200
Organization: Compilers Central
References: 20-09-032 20-09-035 20-09-036
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Keywords: optimize
Posted-Date: 19 Sep 2020 21:05:56 EDT

Am 16.09.2020 um 07:25 schrieb gah4:


> One thought was that someone codes bubblesort, and the compiler
> generates quicksort. Small complication that bubblesort is stable, and
> quicksort isn't. (Add an array with the original position to break
> ties.)


Right, algorithm or control flow optimization should be located in an
earlier project stage, not in compilation. It also smells like the dream
of automated "proof of correctness", whose basics I learned 50 years ago
but never found usable results yet. How shall a tool suggest other
algorithm(s) without knowing (having determined - how?!) about the goals
of a piece of code?


DoDi


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