llvm dev - Jan 2020 - FC : A MLIR+LLVM based Fortran front end

Hi-

In August we made an announcement  of "FC: A new fortran front end" 
[1].
At that time to get an end-to-end solution, we made FC to emit LLVM IR
directly.  At present, we have upgraded FC to emit MLIR. Currently the
language supported is close to Fortran-95. Apart from 400+ unit test cases,
out framework passes two SPEC-2017 benchmarks successfully.  Currently we
are cleaning up the code and plan to open source the same in a week or so.

Apart from the front end changes, we have defined a new high level dialect
in MLIR for representing Fortran. We have defined a new Loop Nest
Optimization framework along with one Loop Nest Optimization in it for the
time being. Also we have supported 4 OpenMP constructs and way to express
the same in MLIR framework.

Entire code is in the spirit of LLVM. If the community is interested, we
would like to work with the community and move forward.

thanks,
-Prashanth

PS: We did try to use F18 for a while and hit the issues raised in [2], [3].

1. http://lists.llvm.org/pipermail/llvm-dev/2019-August/134620.html
2. http://lists.llvm.org/pipermail/llvm-dev/2020-January/138069.html
3.
http://lists.llvm.org/pipermail/flang-dev/attachments/20191202/6e7c1e51/attachment-0001.pdf
OR http://lists.llvm.org/pipermail/flang-dev/2019-December/000089.html
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Hi, Prashanth,

That's great news! It sounds like you've made a lot of progress, and I
certainly hope that you can make your source available under the LLVM license
and that we can all work together going forward.

 -Hal

On 1/11/20 12:52 PM, Prashanth N R via llvm-dev wrote:
Hi-

In August we made an announcement  of "FC: A new fortran front end" 
[1]. At that time to get an end-to-end solution, we made FC to emit LLVM IR
directly.  At present, we have upgraded FC to emit MLIR. Currently the language
supported is close to Fortran-95. Apart from 400+ unit test cases, out framework
passes two SPEC-2017 benchmarks successfully.  Currently we are cleaning up the
code and plan to open source the same in a week or so.

Apart from the front end changes, we have defined a new high level dialect in
MLIR for representing Fortran. We have defined a new Loop Nest Optimization
framework along with one Loop Nest Optimization in it for the time being. Also
we have supported 4 OpenMP constructs and way to express the same in MLIR
framework.

Entire code is in the spirit of LLVM. If the community is interested, we would
like to work with the community and move forward.

thanks,
-Prashanth

PS: We did try to use F18 for a while and hit the issues raised in [2], [3].

1. http://lists.llvm.org/pipermail/llvm-dev/2019-August/134620.html
2. http://lists.llvm.org/pipermail/llvm-dev/2020-January/138069.html
3.
http://lists.llvm.org/pipermail/flang-dev/attachments/20191202/6e7c1e51/attachment-0001.pdf
OR http://lists.llvm.org/pipermail/flang-dev/2019-December/000089.html




_______________________________________________
LLVM Developers mailing list
llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev


--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory
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Agreed!  Is the code already available?  What are your plans for it, and are you
interested in collaboration with the rest of the LLVM community?

-Chris
> On Jan 11, 2020, at 11:58 AM, Finkel, Hal J. via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> Hi, Prashanth,
> 
> That's great news! It sounds like you've made a lot of progress,
and I certainly hope that you can make your source available under the LLVM
license and that we can all work together going forward.
> 
>  -Hal
> 
> On 1/11/20 12:52 PM, Prashanth N R via llvm-dev wrote:
>> Hi-
>> 
>> In August we made an announcement  of "FC: A new fortran front
end"  [1]. At that time to get an end-to-end solution, we made FC to emit
LLVM IR directly.  At present, we have upgraded FC to emit MLIR. Currently the
language supported is close to Fortran-95. Apart from 400+ unit test cases, out
framework passes two SPEC-2017 benchmarks successfully.  Currently we are
cleaning up the code and plan to open source the same in a week or so.
>> 
>> Apart from the front end changes, we have defined a new high level
dialect in MLIR for representing Fortran. We have defined a new Loop Nest
Optimization framework along with one Loop Nest Optimization in it for the time
being. Also we have supported 4 OpenMP constructs and way to express the same in
MLIR framework.
>> 
>> Entire code is in the spirit of LLVM. If the community is interested,
we would like to work with the community and move forward.
>> 
>> thanks,
>> -Prashanth
>> 
>> PS: We did try to use F18 for a while and hit the issues raised in [2],
[3].
>> 
>> 1. http://lists.llvm.org/pipermail/llvm-dev/2019-August/134620.html
<http://lists.llvm.org/pipermail/llvm-dev/2019-August/134620.html>
>> 2. http://lists.llvm.org/pipermail/llvm-dev/2020-January/138069.html
<http://lists.llvm.org/pipermail/llvm-dev/2020-January/138069.html>
>> 3.
http://lists.llvm.org/pipermail/flang-dev/attachments/20191202/6e7c1e51/attachment-0001.pdf
<http://lists.llvm.org/pipermail/flang-dev/attachments/20191202/6e7c1e51/attachment-0001.pdf>
>> OR http://lists.llvm.org/pipermail/flang-dev/2019-December/000089.html
<http://lists.llvm.org/pipermail/flang-dev/2019-December/000089.html>
>> 
>> 
>> 
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>
>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
<https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev>
> -- 
> Hal Finkel
> Lead, Compiler Technology and Programming Languages
> Leadership Computing Facility
> Argonne National Laboratory
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
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Hi Hal-
 In a day or two we will open source the code. Bigger clean up is expected
by the end of this week. Of course the license will be LLVM license.

thanks,
-Prashanth

On Sun, Jan 12, 2020 at 1:28 AM Finkel, Hal J. <hfinkel at anl.gov> wrote:
> Hi, Prashanth,
>
> That's great news! It sounds like you've made a lot of progress,
and I
> certainly hope that you can make your source available under the LLVM
> license and that we can all work together going forward.
>
>  -Hal
> On 1/11/20 12:52 PM, Prashanth N R via llvm-dev wrote:
>
> Hi-
>
> In August we made an announcement  of "FC: A new fortran front
end"  [1].
> At that time to get an end-to-end solution, we made FC to emit LLVM IR
> directly.  At present, we have upgraded FC to emit MLIR. Currently the
> language supported is close to Fortran-95. Apart from 400+ unit test cases,
> out framework passes two SPEC-2017 benchmarks successfully.  Currently we
> are cleaning up the code and plan to open source the same in a week or so.
>
> Apart from the front end changes, we have defined a new high level dialect
> in MLIR for representing Fortran. We have defined a new Loop Nest
> Optimization framework along with one Loop Nest Optimization in it for the
> time being. Also we have supported 4 OpenMP constructs and way to express
> the same in MLIR framework.
>
> Entire code is in the spirit of LLVM. If the community is interested, we
> would like to work with the community and move forward.
>
> thanks,
> -Prashanth
>
> PS: We did try to use F18 for a while and hit the issues raised in [2],
> [3].
>
> 1. http://lists.llvm.org/pipermail/llvm-dev/2019-August/134620.html
> 2. http://lists.llvm.org/pipermail/llvm-dev/2020-January/138069.html
> 3.
>
http://lists.llvm.org/pipermail/flang-dev/attachments/20191202/6e7c1e51/attachment-0001.pdf
> OR http://lists.llvm.org/pipermail/flang-dev/2019-December/000089.html
>
>
> _______________________________________________
> LLVM Developers mailing listllvm-dev at
lists.llvm.orghttps://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
> --
> Hal Finkel
> Lead, Compiler Technology and Programming Languages
> Leadership Computing Facility
> Argonne National Laboratory
>
>
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