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Groups > comp.lang.c > #96412

Re: Compiler design in C?

From David Brown <david.brown@hesbynett.no>
Newsgroups comp.lang.c
Subject Re: Compiler design in C?
Date 2016-11-12 14:17 +0100
Organization A noiseless patient Spider
Message-ID <o074os$61m$1@dont-email.me> (permalink)
References (18 earlier) <23d0f58e-a17c-4ef7-8db6-9cc5b7bcaf04@googlegroups.com> <o040re$d5a$1@dont-email.me> <9e27a17d-aaab-48e1-9139-95114dea0da6@googlegroups.com> <o05b51$81t$1@dont-email.me> <3121b7be-aca1-44b0-9dc9-6b23611bbfba@googlegroups.com>

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On 11/11/16 23:10, supercat@casperkitty.com wrote:
> On Friday, November 11, 2016 at 2:54:33 PM UTC-6, David Brown wrote:
>> On 11/11/16 15:09, supercat wrote:
>>> On Friday, November 11, 2016 at 2:52:38 AM UTC-6, David Brown wrote:
>>>> What I doubt is that there are compilers that define behaviour in terms
>>>> of "the compiler will act like the original C designers expected", or
>>>> "the compiler will act like the first C standards meant, even though
>>>> they said something else", or "the compiler will act like a mindless
>>>> translator", or "the compiler will act by reading the developer's mind".
>>>
>>> What does the phrase "disable ___ optimizations" mean if not, effectively,
>>> behave like a mindless translator with respect to ___ ?
>>
>> It means the compiler will disable /those/ particular optimisations, and
>> not other ones.  It is not in any way "mindless translation".  And note
>> that it only does this when you specifically ask the compiler to behave
>> in this way - it is not normal compiler behaviour (and never has been).
>
> How many compilers provide options to "disable" optimizations which they do
> not and have never performed?  You seem to think that a compiler should be
> presumed capable of spontaneously applying any optimization which has not
> been expressly disabled, even if there is no option to "disable" that
> optimization because the compiler never performed it.

Yes, that is exactly correct.  A compiler is free to do any 
optimisations that do not break the rules defined by the C standards 
(especially the "as if" rule), and that do not break any documented 
behaviour for that particular compiler and version.  A compiler is free 
to perform different optimisations in different circumstances - and if 
you want to write good, safe, robust, and reliable code, you do not make 
/any/ assumptions about what optimisations a compiler will or will not 
perform, except when you have clear information in the documentation, 
the compiler flags you use, and the particular version of the particular 
tool in question.

You think it is unlikely for a compiler to "suddenly" start using an 
optimisation such as relying on the undefined behaviour of integer 
overflow or "strict aliasing" effects.  In reality, it is quite possible 
in a variety of circumstances.  Maybe you have changed your compiler 
flags - it is very common (but a bad idea, IMHO) to have "debug builds" 
and "release builds" with different flags.  Maybe you have updated your 
compiler - optimisation details can easily change between releases. 
Maybe you have just made a few minor changes to your code, and the 
changes to register allocations mean that different optimisations take 
effect.

>
> It is all well and good to say that because certain techniques may require
> disabling some optimizations which would otherwise be available in the
> future, they should be avoided unless the value of those techniques would
> be greater than the value of foregone optimizations, but it seems silly to
> say that a programmer should be expected to refrain from using techniques
> that could double the speed of hot loops, in order to allow for future
> compilers to perform some optimizations which may or may not offer much
> useful speed improvement.

As usual, you are making up numbers to try to "prove" how important it 
is to break the rules of C.

As I have said many times, it is /fine/ to use implementation-specific 
behaviour in order to get the last drops of speed out of your target. 
This is something that has always existed in C, and always been allowed, 
encouraged and expected.  What is /not/ fine is to write code that 
relies on particular aspects of an implementation without any way to be 
sure that this is how the implementation actually works, or to claim it 
is "portable" because you think other implementations "should" work in 
that way.

>
>>> No mind-reading required.  If an implementation defines the bit-level
>>> storage of types X and Y, and doesn't do anything to the contrary, the
>>> effect of writing something of type X will be to write the bit pattern
>>> associated with X, and the effect of reading that storage as type Y will
>>> be to yield the value associated with the bits in the storage, without
>>> regard for the type used to write those bits.
>>
>> Yes, in regard to this /one/ aspect of compilation on this /one/
>> compiler, when that particular flag is set.
>
> Why would that not be equally applicable to *all* compilers which define
> the bit-level formats of their data types and refrain from type-based
> aliasing optimizations?
>

It might well be applicable to all such compilers.  But it is still 
implementation-dependent behaviour - it just works with more than one 
particular compiler and set of compilation flags.

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Thread

Compiler design in C? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-08 22:17 +0800
  Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-08 14:25 +0000
    [OI] chat "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-08 22:26 +0800
    Re: Compiler design in C? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-08 22:29 +0800
      Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-08 20:48 +0100
        Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-08 11:51 -0800
          Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-08 21:12 +0100
            Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-08 20:43 +0000
            Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-08 13:20 -0800
              Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-08 23:04 +0100
              Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-08 23:04 +0100
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-08 14:30 -0800
                Re: Compiler design in C? Noob <root@127.0.0.1> - 2016-11-12 01:25 +0100
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-11 17:08 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-12 07:52 +0000
                Re: Compiler design in C? Noob <root@127.0.0.1> - 2016-11-12 15:18 +0100
            Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-08 23:00 +0100
              Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-08 22:33 +0000
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-08 22:56 +0000
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-08 23:40 +0000
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-09 19:54 +0000
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 15:47 -0600
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 06:46 +0000
                Re: Compiler design in C? James Kuyper <jameskuyper@verizon.net> - 2016-11-10 07:19 -0500
                Re: Compiler design in C? gwowen <gwowen@gmail.com> - 2016-11-10 06:46 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-08 23:00 +0000
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-09 11:30 +0100
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-09 11:14 +0000
                Re: Compiler design in C? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-09 19:15 +0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-09 13:59 +0100
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-09 03:15 -0800
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 05:44 -0600
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-09 03:57 -0800
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 15:19 -0600
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-09 07:59 -0500
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-09 13:13 +0000
                Re: Compiler design in C? Robert Spanjaard <spamtrap@arumes.com> - 2016-11-09 14:06 +0000
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-09 14:46 +0000
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-09 08:33 -0800
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-09 17:28 +0000
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 15:22 -0600
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-09 10:55 -0500
                Re: Compiler design in C? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-10 00:01 +0800
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-09 17:11 +0000
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-09 13:37 -0500
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 15:16 -0600
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-09 22:36 -0500
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 23:40 -0600
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-10 08:49 -0500
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-09 14:02 +0100
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-09 05:40 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-09 15:47 +0100
                Re: Compiler design in C? Anton Shepelev <anton.txt@g{oogle}mail.com> - 2016-11-09 19:32 +0300
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 15:34 -0600
                Re: Compiler design in C? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-10 00:43 +0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-09 20:00 +0000
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-09 13:25 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 11:18 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-09 19:57 +0000
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-09 12:10 -0800
                Re: Compiler design in C? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-09 20:32 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-09 22:56 +0100
                Re: Compiler design in C? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-09 22:04 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-09 23:16 +0100
                Re: Compiler design in C? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-09 22:18 +0000
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 06:29 +0000
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-09 21:35 +0100
                Re: Compiler design in C? Melzzzzz <mel@zzzzz.com> - 2016-11-09 21:55 +0100
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-09 15:49 -0600
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 11:31 +0100
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 10:42 +0000
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 13:03 +0100
                Re: Compiler design in C? Anton Shepelev <anton.txt@g{oogle}mail.com> - 2016-11-10 15:37 +0300
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-10 08:13 -0800
                Re: Compiler design in C? Anton Shepelev <anton.txt@g{oogle}mail.com> - 2016-11-10 20:22 +0300
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-10 12:29 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 16:02 +0000
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 20:24 +0100
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-10 12:18 +0000
                Re: Compiler design in C? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-10 12:36 +0000
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 04:43 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 16:18 +0000
                Re: Compiler design in C? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-09 21:06 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-09 23:12 +0100
                Re: Compiler design in C? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-09 22:18 +0000
                Re: Compiler design in C? luser droog <luser.droog@gmail.com> - 2016-11-09 14:35 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 13:10 +0100
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-09 21:28 +0000
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-09 21:32 +0000
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 06:36 +0000
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 07:10 +0000
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-10 20:32 +1300
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 08:05 +0000
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 08:06 +0000
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 08:14 +0000
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 08:33 +0000
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 09:20 +0000
                Re: Compiler design in C? gwowen <gwowen@gmail.com> - 2016-11-10 02:15 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 10:29 +0000
                Re: Compiler design in C? gwowen <gwowen@gmail.com> - 2016-11-10 02:58 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 11:09 +0000
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 03:25 -0800
                Re: Compiler design in C? gwowen <gwowen@gmail.com> - 2016-11-10 06:35 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 16:29 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-10 21:59 +0100
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-11 10:10 +1300
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-10 22:27 +0100
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 22:42 +0100
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-11 10:46 +1300
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-10 16:27 -0500
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 22:47 +0100
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-10 19:29 -0500
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-11 09:17 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-10 13:45 -0800
                Re: Compiler design in C? gwowen <gwowen@gmail.com> - 2016-11-10 06:58 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 16:31 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-10 21:41 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 20:57 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-10 22:16 +0100
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-10 13:35 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-10 22:43 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 21:58 +0000
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-10 14:28 -0800
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-10 14:47 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 22:51 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-11 00:27 +0100
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-10 15:57 -0800
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-11 10:38 +1300
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-10 22:46 +0100
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-11 10:51 +1300
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 22:04 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-11 00:18 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-11 05:45 +0000
                Re: Compiler design in C? Robert Wessel <robertwessel2@yahoo.com> - 2016-11-14 00:27 -0600
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-14 21:24 +1300
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-14 09:45 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 21:54 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-11 00:19 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-11 05:47 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-11 00:22 +0100
                Re: Compiler design in C? James Kuyper <jameskuyper@verizon.net> - 2016-11-10 07:01 -0500
                Re: Compiler design in C? gwowen <gwowen@gmail.com> - 2016-11-10 06:49 -0800
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 03:02 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 11:10 +0000
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 03:17 -0800
                Re: Compiler design in C? James Kuyper <jameskuyper@verizon.net> - 2016-11-10 06:56 -0500
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 04:05 -0800
                Re: Compiler design in C? James Kuyper <jameskuyper@verizon.net> - 2016-11-10 08:09 -0500
                Re: Compiler design in C? jameskuyper@verizon.net - 2016-11-11 16:56 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 07:37 +0000
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 08:07 +0000
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-10 22:43 +1300
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 09:50 +0000
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-10 11:43 +0000
                Re: Compiler design in C? gwowen <gwowen@gmail.com> - 2016-11-10 06:36 -0800
                Re: Compiler design in C? BartC <bc@freeuk.com> - 2016-11-10 15:05 +0000
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 16:25 +0100
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 13:14 +0100
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 04:23 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-09 23:01 +0100
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 13:35 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-10 08:08 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 20:30 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-10 12:20 -0800
                Re: Compiler design in C? me <crisdunbar@gmail.com> - 2016-11-10 13:48 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 22:53 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-10 14:38 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-11 09:52 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-11 06:09 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-11 21:54 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-11 14:10 -0800
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-12 14:17 +0100
                Re: Compiler design in C? supercat <flatfinger@casperkitty.com> - 2016-11-12 10:42 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-12 19:04 +0000
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-12 16:13 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-13 00:28 +0000
                Re: Compiler design in C? supercat <flatfinger@casperkitty.com> - 2016-11-12 17:36 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-13 10:20 +0000
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-13 14:37 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-13 22:42 +0000
                Re: Compiler design in C? "James R. Kuyper" <jameskuyper@verizon.net> - 2016-11-13 18:26 -0500
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-14 07:08 +0000
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-13 15:52 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-14 07:10 +0000
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-14 07:33 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-14 18:42 +0000
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-14 11:42 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-14 19:49 +0000
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-14 12:24 -0800
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-14 12:32 -0800
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-16 08:18 -0800
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-16 08:50 -0800
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-17 12:02 -0800
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-17 12:22 -0800
                Re: Compiler design in C? Tim Rentsch <txr@alumni.caltech.edu> - 2016-11-16 10:35 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-13 10:52 +0000
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-12 14:28 -0800
                Re: Compiler design in C? jameskuyper@verizon.net - 2016-11-09 13:27 -0800
                Re: Compiler design in C? Robert Spanjaard <spamtrap@arumes.com> - 2016-11-09 23:43 +0100
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-10 17:57 +1300
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-09 21:26 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 06:39 +0000
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-09 22:54 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-09 15:08 -0800
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 06:50 +0000
          Re: Compiler design in C? John Bode <jfbode1029@gmail.com> - 2016-11-08 13:44 -0800
            Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-08 23:07 +0100
              Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 14:15 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-08 23:26 +0100
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 14:44 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 14:48 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 15:34 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 15:57 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 16:17 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 16:18 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-08 16:24 -0800
                Re: Compiler design in C? "James R. Kuyper" <jameskuyper@verizon.net> - 2016-11-08 19:59 -0500
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-09 15:44 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-10 00:51 +0100
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-09 15:59 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-10 16:08 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-11 14:41 +0000
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-11 15:55 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-11 15:21 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-11 15:32 -0800
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-11 16:11 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-12 11:12 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-12 20:03 +0000
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-12 20:21 +0000
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-14 15:30 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-12 21:51 +0100
                Re: Compiler design in C? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-11-12 13:16 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-12 23:04 +0100
                Re: Compiler design in C? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-11-12 14:12 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-14 15:05 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-14 14:43 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-14 14:49 -0800
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-12 14:33 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-12 22:45 +0000
                Re: Compiler design in C? "James R. Kuyper" <jameskuyper@verizon.net> - 2016-11-12 18:14 -0500
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-13 00:12 +0000
                Re: Compiler design in C? "James R. Kuyper" <jameskuyper@verizon.net> - 2016-11-13 11:38 -0500
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-14 00:44 +0000
                Re: Compiler design in C? "James R. Kuyper" <jameskuyper@verizon.net> - 2016-11-14 11:45 -0500
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-14 09:42 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-14 14:14 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-14 22:59 +0000
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-14 15:15 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-14 19:11 +0000
                Re: Compiler design in C? "James R. Kuyper" <jameskuyper@verizon.net> - 2016-11-14 15:40 -0500
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-14 20:45 +0000
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-12 17:20 -0800
                Re: Compiler design in C? "James R. Kuyper" <jameskuyper@verizon.net> - 2016-11-09 19:49 -0500
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-10 16:14 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-11 15:28 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-12 00:45 +0000
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-12 11:40 -0800
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-12 11:42 -0800
                Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-12 20:18 +0000
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-14 15:23 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-13 11:46 +0100
                Re: Compiler design in C? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-11-10 16:22 -0800
                Re: Compiler design in C? jameskuyper@verizon.net - 2016-11-11 16:52 -0800
                Re: Compiler design in C? John Bode <jfbode1029@gmail.com> - 2016-11-08 14:57 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-09 00:13 +0100
                Re: Compiler design in C? Keith Thompson <kst-u@mib.org> - 2016-11-08 15:46 -0800
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-08 20:04 -0500
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-09 03:23 -0800
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-09 08:01 -0500
                Re: Compiler design in C? John Bode <jfbode1029@gmail.com> - 2016-11-09 12:27 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-09 22:32 +0100
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 06:43 +0000
                Re: Compiler design in C? Ian Collins <ian-news@hotmail.com> - 2016-11-10 20:30 +1300
                Re: Compiler design in C? Gareth Owen <gwowen@gmail.com> - 2016-11-10 07:35 +0000
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 03:12 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-10 11:19 +0000
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 03:46 -0800
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-10 04:01 -0800
                Re: Compiler design in C? Melzzzzz <Melzzzzz@zzzzz.com> - 2016-11-11 16:04 +0000
                Re: Compiler design in C? Thiago Adams <thiago.adams@gmail.com> - 2016-11-11 08:36 -0800
                Re: Compiler design in C? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-09 17:41 -0500
                Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 13:58 +0100
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-09 08:10 -0800
                Re: Compiler design in C? supercat@casperkitty.com - 2016-11-09 10:35 -0800
              Re: Compiler design in C? supercat@casperkitty.com - 2016-11-08 14:21 -0800
                Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-08 23:28 +0100
          Re: Compiler design in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-08 22:47 +0000
        Re: Compiler design in C? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-10 09:52 +0000
          Re: Compiler design in C? James Kuyper <jameskuyper@verizon.net> - 2016-11-10 07:33 -0500
          Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 14:03 +0100
            Re: Compiler design in C? James Kuyper <jameskuyper@verizon.net> - 2016-11-10 08:15 -0500
              Re: Compiler design in C? David Brown <david.brown@hesbynett.no> - 2016-11-10 14:47 +0100
  Re: Compiler design in C? jacobnavia <jacob@jacob.remcomp.fr> - 2016-11-08 22:55 +0100
    Re: Compiler design in C? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-09 19:44 +0800
  Re: Compiler design in C? luser droog <luser.droog@gmail.com> - 2016-11-08 18:18 -0800
    Re: Compiler design in C? luser droog <luser.droog@gmail.com> - 2016-11-08 18:25 -0800

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