Re: GNU/GCC optimizing

From	Francois LE COAT <lecoat@atari.org>
Newsgroups	comp.sys.atari.st
Subject	Re: GNU/GCC optimizing
Date	2015-10-06 21:51 +0200
Organization	Aioe.org NNTP Server
Message-ID	<mv18o0$vlb$1@speranza.aioe.org> (permalink)
References	(5 earlier) <slrnn10l69.438.news-1326478115@a-tuin.ms.intern> <mur8pi$cne$1@speranza.aioe.org> <slrnn12rck.438.news-1326478115@a-tuin.ms.intern> <mus28q$d9r$1@speranza.aioe.org> <slrnn17u7k.438.news-1326478115@a-tuin.ms.intern>

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Hi,

Michael Schwingen writes:
> Francois LE COAT wrote:
>> Well, the same recipe should at least give the same meal.
>
> Not if the recipy is unclear, like "take a spoonful of whatever red
> ingredient you find in the fridge".
>
>> What should I think about GNU/GCC 4 compared to GNU/GCC 2 and 3,
>> PURE C 1.1 and other compilers, building my C program Eureka 2.12,
>> when the produced binary is such a messy meal ?
>
> That your source is a messy meal, when judged by the current C standards
> that the compiler implements - for good reason (it gives much better
> performance when compiling standard-compliant sources). And no, the compiler
> is working as expected (by the standard) - it it giving you one kind of
> correct result, just not the one you want.
>
> If you insist on keeping your source code as it is, you are limited to old,
> badly-optimizing compilers that will by chance get the results you want.
>
> Otherwise, you need to take a look *where* the problems are (as I said,
> compiling with full warnings enabled, understanding and removing them is a
> good start, but deeper debugging may be required). The links I posted should
> provide a good start to understand what constructs are to be avoided when
> using modern compilers.

I think the GNU/GCC 4 compiler is too restrictive. There's a lot of
other C compilers on ATARI computers, I tested many of those, which are
not so rigorous. If you want to eliminate all chance there's any
misunderstanding with the previous generation of compilers, you can
use the -pendantic option. I think GNU/GCC 4 is naturally "pedandic".

The problem is that it eliminates a large amount of old C code,
that becomes "obsolete". Obsolescence is the worse of catastrophes
that severely impacts the informatics industries, because it gives
better profits to the giants of this lucrative business.

I'm surprised that GNU foundation is encouraging that kind of business.

Thanks for your answer.

Regards,

-- 
François LE COAT
Author of Eureka 2.12 (2D Graph Describer, 3D Modeller)
http://eureka.atari.org/

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GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-09-30 23:45 +0200
  Re: GNU/GCC optimizing Miro Kropáček <miro.kropacek@gmail.com> - 2015-09-30 23:18 -0700
    Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-01 21:41 +0200
      Re: GNU/GCC optimizing Miro Kropáček <miro.kropacek@gmail.com> - 2015-10-01 23:12 -0700
        Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-03 16:07 +0200
          Re: GNU/GCC optimizing Michael Schwingen <news-1326478115@discworld.dascon.de> - 2015-10-03 22:20 +0000
            Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-04 15:15 +0200
              Re: GNU/GCC optimizing Michael Schwingen <news-1326478115@discworld.dascon.de> - 2015-10-04 18:19 +0000
                Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-04 22:30 +0200
                Re: GNU/GCC optimizing Michael Schwingen <news-1326478115@discworld.dascon.de> - 2015-10-06 16:38 +0000
                Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-06 21:51 +0200
                Re: GNU/GCC optimizing Michael Schwingen <news-1326478115@discworld.dascon.de> - 2015-10-07 06:55 +0000
              Re: GNU/GCC optimizing David Wade <dave.g4ugm@gmail.com> - 2015-10-04 21:20 +0100
                Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-04 23:35 +0200
                Re: GNU/GCC optimizing Miro Kropáček <miro.kropacek@gmail.com> - 2015-10-05 02:36 -0700
                Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-08 21:31 +0200
                Re: GNU/GCC optimizing Miro Kropáček <miro.kropacek@gmail.com> - 2015-10-08 23:55 -0700
                Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-09 17:25 +0200
                Re: GNU/GCC optimizing Michael Schwingen <news-1326478115@discworld.dascon.de> - 2015-10-10 09:40 +0000
                Re: GNU/GCC optimizing Francois LE COAT <lecoat@atari.org> - 2015-10-10 13:07 +0200

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