[cfe-dev] CLOMP: OpenMP frontend for Clang (and much more)

[Hal Finkel]

On Tue, 08 May 2012 22:02:29 +0200
Simone Pellegrini <spellegrini at dps.uibk.ac.at> wrote:

> On Tue 08 May 2012 08:08:53 PM CEST, Hal Finkel wrote:
> > Simone,
> >
> > Thank you for taking the time to extract this from your codebase.
> > For any of this code to be directly usable in clang, it will need
> > to be relicensed (most of the files seem to be under the GPL
> > currently). Once that is done, I will certainly help with the
> > rebasing, coding-standards changes, etc.
> 
> The GPL is not an issue, I can relax it. However I need to know what 
> kind of license you need, I am not allowed to release the code
> without any license.

Fair enough. Can you release it under LLVM's license? That is certainly
the easiest from an integration perspective.

Thanks again,
Hal

> 
> cheers, Simone
> 
> >
> > Sincerely,
> > Hal
> >
> > On Tue, 08 May 2012 15:11:39 +0200
> > Simone Pellegrini<spellegrini at dps.uibk.ac.at>  wrote:
> >
> >> Dear all,
> >> I worked for some time on an OpenMP frontend based on Clang. This
> >> is not just an OpenMP frontend but a more comprehensive framework
> >> to handle user defined pragmas. OpenMP is implemented just to test
> >> its functionalities. This was implemented as part of a bigger
> >> project called insieme which is developed at the university of
> >> Innsbruck ( http://insieme-compiler.org/). Several people asked me
> >> to release this code since long time and I finally took some time
> >> to isolate the pragma handling mechanism from the rest of the
> >> project and open source it. This is only the frontend part, there
> >> is no backend. Therefore, if you happen to have an OpenMP backend
> >> for LLVM and you need a frontend then you just found your soul
> >> mate :)
> >>
> >> I host this code in the following repository:
> >> https://github.com/motonacciu/clomp
> >>
> >> This project contains the infrastructure for pragma handling and
> >> the OpenMP frontend. It doesn't work on the current SVN release on
> >> clang. It requires LLVM/Clang 3.0 and additionally a small patch
> >> has to be applied to Clang in order for the all thing to work.
> >> However the patch can be easily updated to work with the latest
> >> clang. The project contains a couple of examples that show how it
> >> is meant to be used.
> >>
> >> In order to compile the project you need to do 2 things. First of
> >> all install the patched version of LLVM/Clang. This can be done by
> >> running the llvm-3.0-installer.sh script stored in the script
> >> folder. Clomp is built with cmake. Specify the
> >> LLVM_HOME=/path/to/patched-llvm env variable when you run CMAKE. It
> >> is required to set up some internal paths. (I will add installation
> >> instruction in the project web page soon)
> >>
> >> It would be nice to have the code in Clang (so that I don't have to
> >> update the patch every time a new release of clang comes along)
> >> but I really have no time to rewrite everything to conform with
> >> the coding style of LLVM. I use C++11 a lot and templates as well
> >> and I know LLVM how people here feel about those things. :) Also
> >> the code was first written more than 1 year ago and I suppose in
> >> the meantime several things have changed in Clang and probably
> >> there is an easier way to do some of the things. If someone is
> >> interested in taking over the effort of going through a code
> >> review and port it into clang I can help, just contact me. The
> >> code is well tested and functional. It can handle several OpenMP
> >> benchmark codes like the NAS Parallel Benchmarks and Rodinia
> >> benchmarks.
> >>
> >> Everyone can use it. If you do so, please cite. I am open to
> >> research collaborations.
> >>
> >> cheers, Simone
> >>
> >>
> >
> >
> >
> 
> 



-- 
Hal Finkel
Postdoctoral Appointee
Leadership Computing Facility
Argonne National Laboratory