Some Fresh Clang Optimization Benchmarks
Written by Michael Larabel in LLVM on 15 November 2015 at 08:38 AM EST. 6 Comments
As some extra benchmarks to toss out there this weekend are some Clang 3.8 SVN compiler benchmarks when trying out different optimization levels.

LLVM Clang 3.8 SVN was tested as of a few days ago atop an Ubuntu 15.10 x86_64 system. The Clang 3.8 tests were done when the CFLAGS/CXXFLAGS set separately to -O3 -march=native, -O3, -O2, -O1- and -O0. These numbers are just being put out there for reference purposes and using just a random selection of tests... Basically there was free time on one of the test systems and I was just running some extra benchmarks for testing some different code paths of the Phoronix Test Suite prior to its Hammerfest release.

So take the results as you wish and you can find all of these LLVM Clang 3.8 SVN benchmarks via this result file while embedded below is just a sampling of the more interesting results.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 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 automated benchmarking software. He can be followed via Twitter or contacted via

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