About VLIW backend

About VLIW backend

[Li Wang]

Hi,
I wonder if any efforts have been made to retarget GCC to VLIW
backend.Is there any project trying to do that? Is it included in the
GCC mainstream? Thanks.

Regards,
Li Wang

Re: About VLIW backend

[Robert Dewar]

Li Wang wrote:
> Hi,
> I wonder if any efforts have been made to retarget GCC to VLIW
> backend.Is there any project trying to do that? Is it included in the
> GCC mainstream? Thanks.

the ia64 is a VLIW architecture!
> 
> Regards,
> Li Wang

Re: About VLIW backend

[Li Wang]

Hi,
     I know that. But I am talking to a more _pure_ VLIW architecture 
which totally relies on static scheduling rather than EPIC architecture. 
Thanks.
> Li Wang wrote:
>> Hi,
>> I wonder if any efforts have been made to retarget GCC to VLIW
>> backend.Is there any project trying to do that? Is it included in the
>> GCC mainstream? Thanks.
>
> the ia64 is a VLIW architecture!
>>
>> Regards,
>> Li Wang
>
>
>

Re: About VLIW backend

[Ian Lance Taylor]

Li Wang <dragonfly@linux-vs.org> writes:

> I wonder if any efforts have been made to retarget GCC to VLIW
> backend.Is there any project trying to do that? Is it included in the
> GCC mainstream? Thanks.

The FRV is an example of a currently supported VLIW backend.

Ian

Re: About VLIW backend

[Pranav Bhandarkar]

On 06 Nov 2007 21:50:09 -0800, Ian Lance Taylor <iant@google.com> wrote:
> Li Wang <dragonfly@linux-vs.org> writes:
>
> > I wonder if any efforts have been made to retarget GCC to VLIW
> > backend.Is there any project trying to do that? Is it included in the
> > GCC mainstream? Thanks.

Dr. Baumgartl,  Jan Parthey and folks at the Chemnitz University of Technology
had got substantial success with a port for the TMS320C6x series of
VLIW processors.

http://archiv.tu-chemnitz.de/pub/2004/0107/data/index.html

We ( A few friends and I - college students then ) had added some
improvements to this port as part of
undergraduate university coursework ( project).


cheers!
Pranav

Re: About VLIW backend

[Pranav Bhandarkar]

>  I am interesting in it. How about the current status, is it ongoing
> developing? Is it included in GCC official release?

Unfortunately our group is not actively working on that right now.
Because of some reasons
( mainly the paucity of time) we couldnt release it to the GCC
community then ( about 3 years back).

- Pranav

Re: About VLIW backend

[Pranav Bhandarkar]

>  Did you test for large programs? Such as applications from SPEC 2006? or
> the equal size of programs. Thanks.

Oh no, we didnt. We stopped when we achieved fair stability purely on
the basis of
the number of  testsuite failures ( less than 100).

cheers!
Pranav