[llvm-dev] Proposal for CIRCT incubator project

[Chris Lattner via llvm-dev]

Hi Hal,

The project is still early and we’ve been working on building out some core infrastructure.  There are lots of things (including existing synthesis frontends) that could benefit from this work.  I’d love to see folks interested in clang integration join the group!

-Chris

> On Jul 5, 2020, at 8:28 AM, Hal Finkel via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> Hi, Steve,
> 
> I think it would be great to have hardware-synthesis capabilities in the LLVM project. The incubation process discussion may be ongoing, but as that settles, this seems like a good candidate to me.
> 
> Out of curiosity, many existing HLS tools use C/C++-derived input languages, and as Clang produces LLVM, do you have any plans for a converter between LLVM and your MLIR dialects? Or are you just targeting other kinds of frontends?
> 
> Thanks again,
> 
> Hal
> 
> On 7/4/20 5:29 PM, Stephen Neuendorffer via llvm-dev wrote:
>> 
>> For the past several months, members of the ‘CIRCT’ group have been working to begin adapting MLIR for hardware design.  We believe that this area would benefit from good open source infrastructure enabling research and, eventually, the next generation of commercial tools.  We have collected several dialects and envision a number of lowering flows using these dialects.  We have reached the point where we are ready to share our ideas more widely and would like to be considered as an LLVM incubator project.
>> 
>> Our code exists at https://github.com/circt <https://github.com/circt> as an out-of-tree MLIR project and our group charter can be found at https://github.com/circt/circt/blob/master/README.md <https://github.com/circt/circt/blob/master/README.md>.   We have weekly discussions with a group of about 20 people from Xilinx, SiFive, Microsoft, PNNL, ETH Zurich, EPFL, Stanford, and Cornell, and welcome additional contributions.  This project is still early and we see many elements as highly experimental.  At the same time, we feel that the only way to vet these ideas is to build larger systems which will likely take some time and community investment.  The LLVM incubator process would be a good way to help us organize this effort.
>> 
>> Steve Neuendorffer
>> Xilinx Research Labs   
>> 
>> 
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> -- 
> Hal Finkel
> Lead, Compiler Technology and Programming Languages
> Leadership Computing Facility
> Argonne National Laboratory
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