On Thu, Aug 15, 2013 at 08:19:06PM +0200, Brad Anderson wrote:
> On Thursday, 15 August 2013 at 14:11:02 UTC, Daniel Murphy wrote:
[...]
> >I am currently able to convert the C++ source to D, then build that into a compiler capable of building itself, druntime, phobos (with unittests), and passing the test suite on win32.
> >
> 
> So what's left is basically cleaning it all up and fine tuning it so it's good enough for the actual transition?

Whoa. This is good news! So you're saying we already have a working D compiler written in D (albeit autoconverted from C++), and all that remains is for some cleanup + performance tuning?


T

-- 
Windows 95 was a joke, and Windows 98 was the punchline.

Isn't the resulting D code is still one 70k-line file?

"Brad Anderson" <eco@gnuk.net> wrote in message news:vdiwuykbulxauiabwams@forum.dlang.org...
> On Thursday, 15 August 2013 at 14:11:02 UTC, Daniel Murphy wrote:
>> "Suliman" <bubnenkoff@gmail.com> wrote in message news:htihsekthjkyhqazuvpc@forum.dlang.org...
>>> Does anybody work on port D to D?
>>
>> I've done quite a lot of work on it since dconf.
>>
>> The progress of making the C++ source 'conversion compatible' is shown
>> here:
>> https://github.com/D-Programming-Language/dmd/pull/1980
>>
>
> So all of those changes were just done by hand, right?  Have the other DDMD labeled pull requests just been you cherry-picking from that branch?
>

Yes.

>> The porting program is here: https://github.com/yebblies/magicport2
>>
>> I am currently able to convert the C++ source to D, then build that into
>> a
>> compiler capable of building itself, druntime, phobos (with unittests),
>> and
>> passing the test suite on win32.
>>
>
> So what's left is basically cleaning it all up and fine tuning it so it's good enough for the actual transition?

Mostly, yes.

"H. S. Teoh" <hsteoh@quickfur.ath.cx> wrote in message news:mailman.91.1376592874.1719.digitalmars-d@puremagic.com...
> On Thu, Aug 15, 2013 at 08:19:06PM +0200, Brad Anderson wrote:
>> On Thursday, 15 August 2013 at 14:11:02 UTC, Daniel Murphy wrote:
> [...]
>> >I am currently able to convert the C++ source to D, then build that into a compiler capable of building itself, druntime, phobos (with unittests), and passing the test suite on win32.
>> >
>>
>> So what's left is basically cleaning it all up and fine tuning it so it's good enough for the actual transition?
>
> Whoa. This is good news! So you're saying we already have a working D compiler written in D (albeit autoconverted from C++), and all that remains is for some cleanup + performance tuning?
>

Yep, all the fun parts are done and the rest should be fairly tedious.

"Andrei Alexandrescu" <SeeWebsiteForEmail@erdani.org> wrote in message news:kuj10l$194l$1@digitalmars.com...
> On 8/15/13 7:10 AM, Daniel Murphy wrote:
>> "Suliman" <bubnenkoff@gmail.com> wrote in message news:htihsekthjkyhqazuvpc@forum.dlang.org...
>>> Does anybody work on port D to D?
>>
>> I've done quite a lot of work on it since dconf.
>>
>> The progress of making the C++ source 'conversion compatible' is shown
>> here:
>> https://github.com/D-Programming-Language/dmd/pull/1980
>>
>> The porting program is here: https://github.com/yebblies/magicport2
>>
>> I am currently able to convert the C++ source to D, then build that into
>> a
>> compiler capable of building itself, druntime, phobos (with unittests),
>> and
>> passing the test suite on win32.
>
> Did you have a chance to measure the speed of the Double-D compiler?
>
> Andrei
>

Last time I measured there was a ~20% performance hit.  The D version throws away all the recent work done on tuning the internal allocator, and uses the GC for all allocations (with collections turned off).  I suspect a large chunk of the extra time comes from that.

On Friday, August 16, 2013 18:54:41 Daniel Murphy wrote:
> Yep, all the fun parts are done and the rest should be fairly tedious.

LOL. I guess that that's kind of where I am with splitting std.datetime. It's basically done code-wise, but now I have to fix all of the documentation, which is no fun at all. :)

- Jonathan M Davis

"Kagamin" <spam@here.lot> wrote in message news:iceiqyqtdsippewgetmp@forum.dlang.org...
> Isn't the resulting D code is still one 70k-line file?

~92k

Putting the code into multiple files is trivial, but until we've done some major refactoring it won't start to resemble the original source organisation.  ( see https://github.com/D-Programming-Language/dmd/pull/2356 for some discussion )

On Friday, 16 August 2013 at 09:28:13 UTC, Daniel Murphy wrote:
> "Kagamin" <spam@here.lot> wrote in message
> news:iceiqyqtdsippewgetmp@forum.dlang.org...
>> Isn't the resulting D code is still one 70k-line file?
>
> ~92k
>
> Putting the code into multiple files is trivial, but until we've done some
> major refactoring it won't start to resemble the original source
> organisation.  ( see https://github.com/D-Programming-Language/dmd/pull/2356
> for some discussion )

Looking forward DMD!D

The D compiler that compiles itself at compile time :-)

On Aug 16, 2013 10:55 AM, "BS" <slackovsky@gmail.com> wrote:
>
> On Friday, 16 August 2013 at 09:28:13 UTC, Daniel Murphy wrote:
>>
>> "Kagamin" <spam@here.lot> wrote in message news:iceiqyqtdsippewgetmp@forum.dlang.org...
>>>
>>> Isn't the resulting D code is still one 70k-line file?
>>
>>
>> ~92k
>>
>> Putting the code into multiple files is trivial, but until we've done
some
>> major refactoring it won't start to resemble the original source organisation.  ( see
https://github.com/D-Programming-Language/dmd/pull/2356
>> for some discussion )
>
>
> Looking forward DMD!D
>
> The D compiler that compiles itself at compile time :-)
>

I suspect we won't be able to do that efficiently until Don starts speeding up CTFE. ;-)

Regards
-- 
Iain Buclaw

*(p < e ? p++ : p) = (c & 0x0f) + '0';

"Iain Buclaw" <ibuclaw@ubuntu.com> wrote in message news:mailman.100.1376649733.1719.digitalmars-d@puremagic.com...
> On Aug 16, 2013 10:55 AM, "BS" <slackovsky@gmail.com> wrote:
>>
>> On Friday, 16 August 2013 at 09:28:13 UTC, Daniel Murphy wrote:
>>>
>>> "Kagamin" <spam@here.lot> wrote in message news:iceiqyqtdsippewgetmp@forum.dlang.org...
>>>>
>>>> Isn't the resulting D code is still one 70k-line file?
>>>
>>>
>>> ~92k
>>>
>>> Putting the code into multiple files is trivial, but until we've done
> some
>>> major refactoring it won't start to resemble the original source organisation.  ( see
> https://github.com/D-Programming-Language/dmd/pull/2356
>>> for some discussion )
>>
>>
>> Looking forward DMD!D
>>
>> The D compiler that compiles itself at compile time :-)
>>
>
> I suspect we won't be able to do that efficiently until Don starts
> speeding
> up CTFE. ;-)
>

Well, the compiler could always invoke the compiler (while compiling the compiler) to compile the compiler, thus vastly improving the speed of ctfe.