[llvm-dev] Question about the status of the IR extensions for OpenMP

Johannes Doerfert via llvm-dev llvm-dev at lists.llvm.org
Tue Jun 12 02:17:15 PDT 2018

Hi Roger,

There are at least two concurrent efforts that work on an IR extension
similar to what you cite below, one by Intel and one by a researcher
working group. Afaik, both will approach the community in the next few
weeks. (And to make sure they'll see your mail I put them all in the

In the meantime you could take a look at this proposal [0]. It is not
an IR extension but an abstraction layer that allows to design and
test parallel specific analysis and optimizations on both current and
future parallel representations.


[0] https://lists.llvm.org/pipermail/llvm-dev/2018-June/123841.html

  I realized you saw the proposal already but I didn't want to remove
  the paragraph about it once I was done.

On 06/11, Roger Ferrer Ibáñez via llvm-dev wrote:
> [Apologies if you received this email twice, the first time I sent it
> from the wrong email account]
> Hi all,
> some time ago Intel proposed a set of minimal IR extensions to improve
> the support of OpenMP in LLVM [1][2].
> I wonder if there has been any progress on this and if it is going to
> be upstreamed.
> Also the previous proposal[2] and communications to the llvm-dev[3]
> mention the following spec:
>   LLVM Intrinsic Function and Metadata String Interface for Directive
> (or Pragmas) Representation.
>   Specification Draft v0.9, Intel Corporation, 2016.
> but I have not been able to find it anywhere (at least via a web
> search). Is it available somewhere?
> Thanks a lot,
> Roger
> [1] https://dl.acm.org/citation.cfm?id=3148191
> [2] https://dl.acm.org/citation.cfm?id=3018872
> [3] http://lists.llvm.org/pipermail/llvm-dev/2017-January/108906.html
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Johannes Doerfert
PhD Student / Researcher

Compiler Design Lab (Professor Hack) / Argonne National Laboratory
Saarland Informatics Campus, Germany / Lemont, IL 60439, USA
Building E1.3, Room 4.31

Tel. +49 (0)681 302-57521 : doerfert at cs.uni-saarland.de / jdoerfert at anl.gov
Fax. +49 (0)681 302-3065  : http://www.cdl.uni-saarland.de/people/doerfert
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