Patches For OpenMP Support In LLVM's Clang
Written by Michael Larabel in Compiler on 13 October 2012 at 12:21 PM EDT. Add A Comment
There's patches available for those wishing to try out experimental OpenMP support for the LLVM/Clang C/C++ compiler.

Support for this common multi-processing API has long been desired for LLVM/Clang -- with GCC and other compilers having supported OpenMP for years now -- but only recently was there serious work on supporting OpenMP in LLVM/Clang for possible upstream inclusion.

Published today to the OpenMP mailing list thread was the latest OpenMP support enablement for Clang. The work allows for -fopenmp to be exposed and supported by Clang for utilizing this cross-platform multi-processing API used by programs like NPB and GraphicsMagick.

LLVM/Clang 3.2 will be released in December and its feature freeze is scheduled to happen in November. It's unknown at this point whether the Clang OpenMP support will settle by then and be merged or whether developers will still be waiting until next year to see this support.

On a semi-related note, there's LLVM Polly optimizer improvements in 3.2. I also published some LLVM/Clang 3.2 SVN performance benchmarks this morning.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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