llvm dev - Aug 2017 - Flang - How to collaborate best

Hi Douglas, hi Steve,

as you are certainly aware, there is an open-source FORTRAN compiler
available on github:

   https://github.com/flang-compiler/flang

which to my pleasure is very actively developed. Congratulations to
this!

I am not sure if I missed it, but was there ever an official
announcement of flang? I recall other people asking for this earlier,
but I likely missed out on it. If not, do you have plans to send out
such an announcement?

I just recently started to look into flang and wondered where to best
discuss questions about the flang design? Should these be on github,
llvm-dev, both?

I bring this up today, as I recently wanted to extend flang's LLVM IR
generation to include some more metadata and was surprised to see that
you print textual LLVM-IR without linking to any of the LLVM libraries.
Is there a specific reason you avoid the use of LLVM libraries for
LLVM-IR code generation. Not using the LLVM libraries seems to me a lot
more difficult or is at least something I am not very used to?

I am also interested to see the flang and LLVM communities to
collaborate more. Are there any plans on the flang side to move e.g. to
C++ and possibly start using more of the LLVM support libraries in case
it makes sense?

I would be very interested in your feedback.

Best,
Tobias

Thanks Tobias for bringing this up. We have experimented a bit with flang
in-house and it looks pretty good. Maybe a separate mailing list for flang would
be a good starting point ?

-Thx
Dibyendu

-----Original Message-----
From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of Tobias
Grosser via llvm-dev
Sent: Monday, August 21, 2017 4:29 PM
To: Douglas.miles at pgroup.com; Steve Scalpone (PGI) <steve.scalpone at
pgroup.com>
Cc: llvm-dev <llvm-dev at lists.llvm.org>
Subject: [llvm-dev] Flang - How to collaborate best

Hi Douglas, hi Steve,

as you are certainly aware, there is an open-source FORTRAN compiler available
on github:

   https://github.com/flang-compiler/flang

which to my pleasure is very actively developed. Congratulations to this!

I am not sure if I missed it, but was there ever an official announcement of
flang? I recall other people asking for this earlier, but I likely missed out on
it. If not, do you have plans to send out such an announcement?

I just recently started to look into flang and wondered where to best discuss
questions about the flang design? Should these be on github, llvm-dev, both?

I bring this up today, as I recently wanted to extend flang's LLVM IR
generation to include some more metadata and was surprised to see that you print
textual LLVM-IR without linking to any of the LLVM libraries.
Is there a specific reason you avoid the use of LLVM libraries for LLVM-IR code
generation. Not using the LLVM libraries seems to me a lot more difficult or is
at least something I am not very used to?

I am also interested to see the flang and LLVM communities to collaborate more.
Are there any plans on the flang side to move e.g. to
C++ and possibly start using more of the LLVM support libraries in case
it makes sense?

I would be very interested in your feedback.

Best,
Tobias
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