Groups | Search | Server Info | Login | Register

Groups > comp.compilers > #187

Re: How to handle qualified identifiers such as x.y in a Pascal-like language

Show all headers | View raw

On 7/2/2011 10:13 AM, Anton Ertl wrote:
> BGB<cr88192@hotmail.com>  writes:
>> I am still left to much wish Linux/... had adopted the Win64 ABI
>> instead
>
> That would have been quite an achievement, because the Windows x64 ABI
> came out quite some time after Linux and others adopted the SysV ABI,
> so it would have required looking into the future.
>

an idle wish doesn't need to be within the realm of "could have actually
happened...".

I am half still considering of using a custom calling-convention for
internal calls. I decided to leave out a more detailed description of
the considered register assignments, argument passing, ... and if/when I
would do something like this is uncertain.


I guess it is mostly just the annoyance that SysV is sufficiently
complex that none of my reflective-call stuff interacting with it can do
so particularly efficiently or correctly (lots of nasty cruft here).


also, it seems to interact badly with my C coding practices in general.

I suspect to work well, SysV/AMD64 expects functions accepting lots of
arguments and with most of the execution/computation being in leaf
functions.

coding practices where most of the computation is in non-leaf functions
and leaf-functions are generally short/trivial (such as performing a
simple operation or returning a status value), ... seem to not be the
ideal use-case.

all this seems to lead to my code generally performing somewhat better
on 32-bit x86 systems and on Win64.

for example, my assembler seems to run about 2x slower on 64-bit Linux
than on 64-bit Windows in my tests, ...


I don't imagine my coding practices are all that novel though.

however, other people have benchmarked other programs, and it seems many
types of programs (apparently especially data-compression and encryption
programs) seem to perform better on Linux x86-64 than on Win64 or on
32-bit systems.

it generally seems to be the reverse for larger programs though (web
browsers, games, office-type apps, ...) which seem to generally perform
better on 32-bit systems and on Windows.


granted, I can't claim any objectivity here, given my personal dislike
(in general) of the SysV/AMD64 ABI...
[It is my impression that a lot of languages that allow closures and the
like end up with their own calling sequences. -John]

Back to comp.compilers | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

How to handle qualified identifiers such as x.y in a Pascal-like language noitalmost <noitalmost@cox.net> - 2011-06-20 15:43 -0400
  Re: How to handle qualified identifiers such as x.y in a Pascal-like language torbenm@diku.dk (Torben Ægidius Mogensen) - 2011-06-22 10:57 +0200
  Re: How to handle qualified identifiers such as x.y in a Pascal-like language Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2011-06-22 11:47 +0100
    Re: How to handle qualified identifiers such as x.y in a Pascal-like language George Neuner <gneuner2@comcast.net> - 2011-06-24 18:13 -0400
      Re: How to handle qualified identifiers such as x.y in a Pascal-like language BGB <cr88192@hotmail.com> - 2011-06-29 12:31 -0700
        Re: How to handle qualified identifiers such as x.y in a Pascal-like language BGB <cr88192@hotmail.com> - 2011-07-01 12:46 -0700
        Re: How to handle qualified identifiers such as x.y in a Pascal-like language anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-07-02 17:13 +0000
          Re: How to handle qualified identifiers such as x.y in a Pascal-like language BGB <cr88192@hotmail.com> - 2011-07-03 13:14 -0700
            Re: How to handle qualified identifiers such as x.y in a Pascal-like language torbenm@diku.dk (Torben Ægidius Mogensen) - 2011-07-07 10:27 +0200
            Re: How to handle qualified identifiers such as x.y in a Pascal-like language BGB <cr88192@hotmail.com> - 2011-07-07 04:14 -0700
        Re: How to handle qualified identifiers such as x.y in a Pascal-like language George Neuner <gneuner2@comcast.net> - 2011-07-02 16:58 -0400
  Re: How to handle qualified identifiers such as x.y in a Pascal-like language Gene <gene.ressler@gmail.com> - 2011-06-22 19:21 -0700
    Re: How to handle qualified identifiers such as x.y in a Pascal-like language Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2011-06-24 07:56 +0100
      Re: How to handle qualified identifiers such as x.y in a Pascal-like language Gene <gene.ressler@gmail.com> - 2011-06-24 19:19 -0700
        Re: How to handle qualified identifiers such as x.y in a Pascal-like language Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2011-06-25 11:55 +0100
          Re: How to handle qualified identifiers such as x.y in a Pascal-like language noitalmost <noitalmost@cox.net> - 2011-06-29 13:13 -0400
    Re: How to handle qualified identifiers such as x.y in a Pascal-like language "[Linux Magazine]" <uu3kw29sb7@snkmail.com> - 2011-06-24 13:58 +0200
      Re: How to handle qualified identifiers such as x.y in a Pascal-like language George Neuner <gneuner2@comcast.net> - 2011-06-25 17:11 -0400
  Re: How to handle qualified identifiers such as x.y in a Pascal-like language noitalmost <noitalmost@cox.net> - 2011-06-23 12:43 -0400
    Re: How to handle qualified identifiers such as x.y in a Pascal-like language Tony Finch <dot@dotat.at> - 2011-06-29 18:55 +0100
    Re: How to handle qualified identifiers such as x.y in a Pascal-like language BGB <cr88192@hotmail.com> - 2011-06-29 15:51 -0700

csiph-web