LLVM Clang 3.5 Brings Some Compiler Performance Improvements

Written by Michael Larabel in Software on 3 September 2014 at 12:00 AM EDT. Page 4 of 4. 1 Comment.

Compile times appear a bit slower with LLVM Clang 3.5, but they still hold a big advantage over the GCC compile times.

C-Ray, the multi-threaded ray-tracer that always tends to be interesting for compiler tests, is slightly faster with Clang 3.5 on this core-avx-i system.

There might be regressions with FLAC/LAME audio encoding with the new compiler infrastructure.

Well, that's that for our Ivy Bridge LLVM/Clang testing. There are some performance improvements shown by this testing of LLVM Clang 3.5 but in a few workloads the performance was slightly lower. Stay tuned to Phoronix as our open-source compiler benchmarking continues.

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Michael Larabel

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 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.