LLVM/Clang 3.3 Very Competitive To GCC 4.8
Written by Michael Larabel in Software on 7 April 2013. Page 5 of 5. 7 Comments

For many of the computational benchmarks, the compiler doesn't yield a heck of a lot of difference in the performance of the resulting binaries.

N-Queens is another OpenMP test case.

Overall, there aren't too many test cases conducted where GCC 4.8.0 yielded significant performance differences over GCC 4.7.2. With Clang, however, it seems LLVM/Clang 3.3 is yielding significantly faster binaries over LLVM/Clang 3.2 for a number of the open-source Linux benchmarks. Now to hope that OpenMP support will be committed soon for LLVM/Clang...

LLVM/Clang 3.3 will be officially released in June at which time there will be plenty more x86 and ARM compiler benchmarks.

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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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