[llvm-dev] Adapting and open-sourcing PGI's Fortran frontend for LLVM

[Hal Finkel via llvm-dev]

----- Original Message -----
> From: "C Bergström" <cbergstrom at pathscale.com>
> To: "Hal Finkel" <hfinkel at anl.gov>
> Cc: "LLVM Dev" <llvm-dev at lists.llvm.org>, "flang-dev" <flang-dev at googlegroups.com>, "Rob Neely" <neely4 at llnl.gov>,
> "douglas miles (PGI)" <douglas.miles at pgroup.com>
> Sent: Friday, November 13, 2015 4:32:16 PM
> Subject: Re: [llvm-dev] Adapting and open-sourcing PGI's Fortran frontend for LLVM
> 
> I won't arrive in time to ask @SC15 on Sunday, but some questions
> 
> Will this include their CAF runtime? What if any vendor extensions
> will be supported? What about directives support like OpenACC/OpenMP?
> Is the code itself written in C/C++ or something else? Which Fortran
> standards will it support? Will they be open sourcing corresponding
> tests?

I'm going to defer to the PGI folks on answering these questions for now (except to note that, as stated below, there will be OpenMP support).

 -Hal

> 
> On Sat, Nov 14, 2015 at 5:22 AM, Hal Finkel via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > Hi everyone,
> >
> > I have some very good news for everyone interested a
> > production-quality Fortran frontend for LLVM:
> >
> > The U.S. Department of Energy’s National Nuclear Security
> > Administration and its three national labs have reached an
> > agreement with NVIDIA's PGI division to adapt and open-source
> > PGI's Fortran frontend, and associated Fortran runtime library,
> > for contribution to the LLVM project. PGI is now working on
> > isolating the necessary frontend components from their existing
> > compiler code base and adapting those components to produce LLVM
> > IR for consumption by our existing infrastructure.
> >
> > We're expecting an initial source-code release from PGI by late
> > 2016, and while that's still far away, PGI's developers will be
> > working closely with the community to coordinate development
> > efforts by others interested in Fortran support (e.g. on ABI
> > support code for other platforms). Even before source code is
> > available, PGI is going to keep the community updated on their
> > progress. After source code is released, PGI will continue
> > development work in coordination with the community to implement
> > additional Fortran and OpenMP features not currently supported by
> > PGI Fortran. The frontend will use LLVM's infrastructure for
> > regression testing, and PGI will be developing regression tests
> > for these new features in accordance with our existing practice.
> >
> > I realize this is somewhat unconventional, but I'm confident that
> > this approach will allow the LLVM community to capture the
> > considerable Fortran expertise of PGI's team and provide our
> > project with a production-quality LLVM frontend in a relatively
> > short amount of time.
> >
> > For the official announcement, please see:
> >
> > https://www.llnl.gov/news/nnsa-national-labs-team-nvidia-develop-open-source-fortran-compiler-technology
> >
> >  -Hal
> >
> > --
> > Hal Finkel
> > Assistant Computational Scientist
> > Leadership Computing Facility
> > Argonne National Laboratory
> > _______________________________________________
> > LLVM Developers mailing list
> > llvm-dev at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> 

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory