LLVM Clang FInally Has Complete OpenMP 3.1 Support!

In our routine compiler benchmarks looking at LLVM/Clang vs. GCC, the performance has certainly gotten tight over the years but one of the areas where there's still been a large difference are in workloads that can make use of OpenMP for multi-threading. Fortunately, Clang has finally finished up its OpenMP 3.1 support.

While the latest OpenMP spec (and GCC) are onto OpenMP 4, at least there's now support for common OpenMP 3.1 in full. There's been out-of-tree OpenMP Clang support for a while thanks to Intel and other companies investing in its development while now it's all finally mainline for having full 3.1 compliance.

More details on the OMP 3.1 accomplishment can be found via this mailing list post by Andrey Bokhanko. Next up they'll start tackling OpenMP 4.x support.

This full OpenMP 3.1 support will be found in the upcoming LLVM Clang 3.7 release. Stay tuned for fresh benchmarks on Phoronix.