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digitalmars.D.announce - NEW asm.dlang.org site

reply "Iain Buclaw" <ibuclaw gdcproject.org> writes:
Hi,

It is my pleasure to release a new site onto the community.  An 
Interactive DMD compiler.

http://asm.dlang.org/

Inspired by Matt Godbolt's GCC Explorer[1], and my own hosted 
version that uses GDC[2].  I was asked by Andrei to fork and make 
a working protoype that uses DMD.

All work is hosted on Github[3], and we are planning on moving it 
to part of the D-Programming-Language repositories.

Please share, contribute, and destroy!

Regards
Iain.

[1]: http://gcc.godbolt.org/
[2]: http://explore.dgnu.org/
[3]: https://github.com/ibuclaw/gcc-explorer/
Jan 26 2015
next sibling parent Rikki Cattermole <alphaglosined gmail.com> writes:
On 27/01/2015 12:46 p.m., Iain Buclaw wrote:

 Hi,

 It is my pleasure to release a new site onto the community.  An
 Interactive DMD compiler.

 http://asm.dlang.org/

 Inspired by Matt Godbolt's GCC Explorer[1], and my own hosted version
 that uses GDC[2].  I was asked by Andrei to fork and make a working
 protoype that uses DMD.

 All work is hosted on Github[3], and we are planning on moving it to
 part of the D-Programming-Language repositories.

 Please share, contribute, and destroy!

 Regards
 Iain.

 [1]: http://gcc.godbolt.org/
 [2]: http://explore.dgnu.org/
 [3]: https://github.com/ibuclaw/gcc-explorer/


1) can we get e.g. ldc ext. on there as well?
2) can it be renamed e.g. paste/pastebin?
3) login ext. integrated with code.dlang.org would be nice for full 
pastebin features
Jan 26 2015
prev sibling next sibling parent "Vladimir Panteleev" <vladimir thecybershadow.net> writes:
On Monday, 26 January 2015 at 23:46:24 UTC, Iain Buclaw wrote:

 Hi,

 It is my pleasure to release a new site onto the community.  An 
 Interactive DMD compiler.


Cool, but I think we ought to improve Dpaste instead, as right 
now we have two services with overlapping roles. nazriel seems to 
have been busy with other things lately. I host dpaste currently, 
so let me know if you want to contribute improvements.
Jan 26 2015
prev sibling next sibling parent reply "ZombineDev" <valid_email he.re> writes:
Thanks for the good work! It would be really nice if in the 
future we could compare  DMD, GDC and LDC (and SDC when it 
becomes more usable) at asm.dlang.org. (Btw a nice choice of name 
:) )

I have a couple of questions about the output when looking at a 
C++[1] program and the same in GDC[2] and DMD[3](I am not very 
familiar with assembly):

1) Syntax:
AFAIU, (_D)main pushes 3 and 4 to the stack and calls 
(example.)add. Then (example.)add loads them from the stack in 
two registers and adds them.
IIRC, dmd passes parameters in reverse order (of the normal C 
way) and that's why pushing and loading 3 and 4 from the stack is 
in reverse order.

However why does DMD use hex instead of decimal notation?
[I was also a little confused about positive vs negative indexing 
of bp and the order of src and dst in the arguments to movl, but 
then I noticed that I am comparing x86 and x86_64, so I managed 
to answer those questions myself :D ]

2) _Dmain:
I also noticed that the output of gdc-4.4 and gdc-4.6 does not 
include a label for _Dmain (nor the regular C main). Is this a 
problem of the disassembly, or just how older version of GDC 
produced code?


[1]: http://goo.gl/mUQKiX (permalink at http://gcc.godbolt.org/)
[2]: http://goo.gl/CmYbrZ (permalink at http://explore.dgnu.org/)
[3]: http://goo.gl/ZHHVuZ (permalink at http://asm.dlang.org/)

On Monday, 26 January 2015 at 23:46:24 UTC, Iain Buclaw wrote:

 Hi,

 It is my pleasure to release a new site onto the community.  An 
 Interactive DMD compiler.

 http://asm.dlang.org/

 Inspired by Matt Godbolt's GCC Explorer[1], and my own hosted 
 version that uses GDC[2].  I was asked by Andrei to fork and 
 make a working protoype that uses DMD.

 All work is hosted on Github[3], and we are planning on moving 
 it to part of the D-Programming-Language repositories.

 Please share, contribute, and destroy!

 Regards
 Iain.

 [1]: http://gcc.godbolt.org/
 [2]: http://explore.dgnu.org/
 [3]: https://github.com/ibuclaw/gcc-explorer/
Jan 27 2015
parent reply Iain Buclaw via Digitalmars-d-announce writes:
On 27 January 2015 at 12:53, ZombineDev via Digitalmars-d-announce
<digitalmars-d-announce puremagic.com> wrote:

 Thanks for the good work! It would be really nice if in the future we could
 compare  DMD, GDC and LDC (and SDC when it becomes more usable) at
 asm.dlang.org. (Btw a nice choice of name :) )

 I have a couple of questions about the output when looking at a C++[1]
 program and the same in GDC[2] and DMD[3](I am not very familiar with
 assembly):

 1) Syntax:
 AFAIU, (_D)main pushes 3 and 4 to the stack and calls (example.)add. Then
 (example.)add loads them from the stack in two registers and adds them.
 IIRC, dmd passes parameters in reverse order (of the normal C way) and
 that's why pushing and loading 3 and 4 from the stack is in reverse order.


That is correct


 However why does DMD use hex instead of decimal notation?
 [I was also a little confused about positive vs negative indexing of bp and
 the order of src and dst in the arguments to movl, but then I noticed that I
 am comparing x86 and x86_64, so I managed to answer those questions myself
 :D ]


Because GCC and GDC dumps are raw assembly.  Whereas with DMD I had to
disassemble from object code (using obbjdump).  This is an
implementation detail really of how DMD works vs GCC backend.



 2) _Dmain:
 I also noticed that the output of gdc-4.4 and gdc-4.6 does not include a
 label for _Dmain (nor the regular C main). Is this a problem of the
 disassembly, or just how older version of GDC produced code?


GCC-Explorer thinks _Dmain is a label, and sees that it is unused (not
called from anywhere).  So it removes it.  In later versions of GDC, a
C main function is included in the compilation, and so now references
_Dmain.

I guess this is a bug in GCC Explorer itself that will need to be
addressed somehow.


Iain.
Jan 27 2015
parent "ZombineDev" <valid_email he.re> writes:
On Tuesday, 27 January 2015 at 13:05:08 UTC, Iain Buclaw wrote:

 ...


Thank you for the informative reply.
Jan 28 2015
prev sibling next sibling parent Andrei Alexandrescu <SeeWebsiteForEmail erdani.org> writes:
On 1/26/15 3:46 PM, Iain Buclaw wrote:

 Hi,

 It is my pleasure to release a new site onto the community.  An
 Interactive DMD compiler.

 http://asm.dlang.org/


Someone found it: 
https://www.reddit.com/r/programming/comments/2tukc6/online_disassembler_for_d_paste_code_see/

Andrei
Jan 27 2015
prev sibling parent "Jakob Ovrum" <jakobovrum gmail.com> writes:
On Monday, 26 January 2015 at 23:46:24 UTC, Iain Buclaw wrote:

 All work is hosted on Github[3], and we are planning on moving 
 it to part of the D-Programming-Language repositories.


I really wish we would eat our own dog food and use D for these 
projects. Nazriel's dpaste is in friggin PHP and this one is in 
JavaScript... we've been emphasizing D on the web yet we don't 
have many real examples of it in practice.

Oh well, I guess at least this project has the excuse that it's 
mostly client-side... but I still think it's a lost opportunity.
Feb 01 2015