Re: New experimental back end for C/C++ compiler targeting CLI

From	BartC <bc@freeuk.com>
Newsgroups	comp.compilers
Subject	Re: New experimental back end for C/C++ compiler targeting CLI
Date	2016-08-30 22:48 +0100
Organization	A noiseless patient Spider
Message-ID	<16-08-015@comp.compilers> (permalink)
References	<16-08-007@comp.compilers> <16-08-008@comp.compilers> <16-08-009@comp.compilers> <16-08-011@comp.compilers> <16-08-012@comp.compilers>

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On 30/08/2016 02:21, Walter Banks wrote:
> On 2016-08-29 1:52 PM, BartC wrote:
>> I've played with source-to-source translators, and never managed to
>> deal with comments properly and in the end gave up. ...
>
>
> How we handled the comments on the asm to asm translation was put the
> whole sourceline into in our case a C statement // comment with enough
> parsing information to tie it as well to the generated code. A filter
> (In our case a compiler pragma) reprocessed the listing line. It could
> have been done with a small post processing program quite easily.

I'm mainly familiar with ASM syntax that is strictly line-oriented and
with a flat code structure.

Then comments can either be tied to a particular instruction, or are on
their own line and might be assumed to refer to the next block of
instructions. (But then, they could be continuing a long comment too.)

But I'm not sure what you mean by an ASM to ASM translator; from your
other remarks it sounds like this is an ASM to C translator, where the C
is then compiled to another ASM (presumably with the original comments?).

It still doesn't sound that straightforward when N commented lines in
the source end up as M commented lines in output. And surely sometimes
the comments for the source ASM are meaningless on the target?

--
Bartc

Thread

New experimental back end for C/C++ compiler targeting CLI Alexandre <alebencz@gmail.com> - 2016-08-25 10:40 -0300
  Re: New experimental back end for C/C++ compiler targeting CLI rockbrentwood@gmail.com - 2016-08-26 12:54 -0700
    Re: New experimental back end for C/C++ compiler targeting CLI Hans-Peter Diettrich <DrDiettrich1@netscape.net> - 2016-08-29 10:28 +0200
      Re: New experimental back end for C/C++ compiler targeting CLI BartC <bc@freeuk.com> - 2016-08-29 18:52 +0100
        Re: New experimental back end for C/C++ compiler targeting CLI Walter Banks <walter@bytecraft.com> - 2016-08-29 21:21 -0400
          Re: New experimental back end for C/C++ compiler targeting CLI Walter Banks <walter@bytecraft.com> - 2016-08-30 13:44 -0400
          Re: New experimental back end for C/C++ compiler targeting CLI BartC <bc@freeuk.com> - 2016-08-30 22:48 +0100
            Re: New experimental back end for C/C++ compiler targeting CLI Walter Banks <walter@bytecraft.com> - 2016-08-31 13:24 -0400
            Re: New experimental back end for C/C++ compiler targeting CLI Martin Ward <martin@gkc.org.uk> - 2016-09-06 18:09 +0100
        Re: New experimental back end for C/C++ compiler targeting CLI Hans-Peter Diettrich <DrDiettrich1@netscape.net> - 2016-08-30 13:13 +0200
    Re: New experimental back end for C/C++ compiler targeting CLI Walter Banks <walter@bytecraft.com> - 2016-08-29 13:15 -0400

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