Re: Most important aspect of any compiler (C or otherwise)

From	BartC <bc@freeuk.com>
Newsgroups	comp.lang.c
Subject	Re: Most important aspect of any compiler (C or otherwise)
Date	2016-10-04 21:29 +0100
Organization	A noiseless patient Spider
Message-ID	<nt13e1$798$1@dont-email.me> (permalink)
References	<20aae408-4b77-483a-bb84-d05f5240f415@googlegroups.com> <nt0u8k$nhh$1@reader2.panix.com> <c7ce2c7c-e448-46b1-bc7e-1f1bb5f3ebbf@googlegroups.com>

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On 04/10/2016 20:08, Rick C. Hodgin wrote:
> On Tuesday, October 4, 2016 at 3:00:45 PM UTC-4, John Gordon wrote:
>> In <20aae408-4b77-483a-bb84-d05f5240f415@googlegroups.com> "Rick C. Hodgin" <rick.c.hodgin@gmail.com> writes:
>>
>>> For me?  Barring the obvious things like functionality and error-free binary
>>> code, it would have to be edit-and-continue.  And without equal.
>>
>> So when the compiler encounters an error, it retains the compilation
>> artifacts (parse tree, symbol table, etc.) up to that point, and when the
>> user corrects the error it continues compiling where it left off?
>>
>> What if the correction changed something that has already been compiled?
>>
>> How much time can it possibly save?  Compilation is pretty fast, no?
>
> There are two approaches to the design.  Microsoft uses the top-down
> recompilation which then looks for the deltas or diffs between the
> generated binary images, and then updates things accordingly.  It often
> breaks data or functions on the stack, or fails to compile completely
> if you stray away.

Microsoft Visual Studio, if that's what you're using, is a massive 1.5 
million *file* application. Files, not lines!

Maybe you need something along those lines for an application that could 
otherwise take *hours* to rebuild.

It might well however have taken them considerably more than 21 man years.

> The model I'm using for CAlive takes the approach of saving the full
> compilation state.  Compilation is carried out continuously as things
> are changed.  But in general, dependency trees are maintained and if
> things which were dependent upon something that's changed has changed,
> the entire related lines of source code are stricken and recompiled.

I used a completely different approach decades ago when developing 
applications. Most user-level commands and features were implemented as 
independent scripts. Scripts could be edited, compiled, run and re-run 
from within the application, without needing to restart the app or go 
through the same series of steps necessary to set up the data. If it 
went wrong, I was still in the application.

But this is much, much simpler than what I think you're trying to do, 
which I believe is some restart at the statement level rather than module.

-- 
Bartc

Thread

Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-04 11:02 -0700
  Re: Most important aspect of any compiler (C or otherwise) John Gordon <gordon@panix.com> - 2016-10-04 19:00 +0000
    Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-04 12:08 -0700
      Re: Most important aspect of any compiler (C or otherwise) jacobnavia <jacob@jacob.remcomp.fr> - 2016-10-04 21:56 +0200
        Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-04 13:06 -0700
      Re: Most important aspect of any compiler (C or otherwise) BartC <bc@freeuk.com> - 2016-10-04 21:29 +0100
        Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-04 13:46 -0700
          Re: Most important aspect of any compiler (C or otherwise) BartC <bc@freeuk.com> - 2016-10-05 00:30 +0100
            Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-04 16:58 -0700
              Re: Most important aspect of any compiler (C or otherwise) gazelle@shell.xmission.com (Kenny McCormack) - 2016-10-05 01:07 +0000
            Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-05 08:07 -0700
              Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-05 11:51 -0700
                Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-05 14:08 -0700
                Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-05 14:25 -0700
                Re: Most important aspect of any compiler (C or otherwise) "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-10-05 18:03 -0700
                Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-05 18:13 -0700
                Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-05 19:08 -0700
                Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-05 19:18 -0700
                Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-05 19:31 -0700
                Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-05 19:43 -0700
                Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-05 22:22 -0400
                Re: Most important aspect of any compiler (C or otherwise) jacobnavia <jacob@jacob.remcomp.fr> - 2016-10-06 09:56 +0200
                Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-06 04:54 -0700
                Re: Most important aspect of any compiler (C or otherwise) mark.bluemel@gmail.com - 2016-10-06 05:06 -0700
                Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-06 05:27 -0700
                Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-06 05:32 -0700
          Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-04 19:12 -0700
      Re: Most important aspect of any compiler (C or otherwise) Ian Collins <ian-news@hotmail.com> - 2016-10-05 13:42 +1300
        Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-05 04:53 -0700
          Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-05 05:04 -0700
            Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-05 05:12 -0700
  Re: Most important aspect of any compiler (C or otherwise) Anand Hariharan <mailto.anand.hariharan@gmail.com> - 2016-10-07 15:02 -0700
    Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-07 16:17 -0700
      Re: Most important aspect of any compiler (C or otherwise) luser droog <luser.droog@gmail.com> - 2016-10-07 18:11 -0700
        Re: Most important aspect of any compiler (C or otherwise) James Kuyper <jameskuyper@verizon.net> - 2016-10-07 23:53 -0400
          Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-08 01:12 -0700
            Re: Most important aspect of any compiler (C or otherwise) jameskuyper@verizon.net - 2016-10-08 08:05 -0700
              Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-08 10:15 -0700
          Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-08 02:17 -0700
            Re: Most important aspect of any compiler (C or otherwise) gazelle@shell.xmission.com (Kenny McCormack) - 2016-10-08 11:02 +0000
              Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-08 05:14 -0700
              Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-08 12:20 -0700
                Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-08 15:31 -0700
                Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-08 15:58 -0700
                Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-08 17:46 -0700
            Re: Most important aspect of any compiler (C or otherwise) jameskuyper@verizon.net - 2016-10-08 08:09 -0700
          Re: Most important aspect of any compiler (C or otherwise) Keith Thompson <kst-u@mib.org> - 2016-10-08 14:49 -0700
            Re: Most important aspect of any compiler (C or otherwise) "James R. Kuyper" <jameskuyper@verizon.net> - 2016-10-09 11:12 -0400
      Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-07 21:15 -0400
        Re: Most important aspect of any compiler (C or otherwise) supercat@casperkitty.com - 2016-10-08 01:02 -0700
          Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-08 06:04 -0400
            Re: Most important aspect of any compiler (C or otherwise) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-08 11:45 +0100
              Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-08 16:57 -0400
                Re: Most important aspect of any compiler (C or otherwise) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-09 01:25 +0100
                Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-08 21:29 -0400
            Re: Most important aspect of any compiler (C or otherwise) jameskuyper@verizon.net - 2016-10-08 07:49 -0700
              Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-08 08:04 -0700
              Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-08 16:58 -0400
                Re: Most important aspect of any compiler (C or otherwise) jameskuyper@verizon.net - 2016-10-08 14:42 -0700
                Re: Most important aspect of any compiler (C or otherwise) Keith Thompson <kst-u@mib.org> - 2016-10-08 15:08 -0700
                Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-08 19:27 -0400
                Re: Most important aspect of any compiler (C or otherwise) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-08 16:37 -0700
                Re: Most important aspect of any compiler (C or otherwise) Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-08 21:30 -0400
    Re: Most important aspect of any compiler (C or otherwise) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-10-07 18:31 -0700

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