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Phoronix Test Suite

OpenBenchmarking.org

Clang 3.4 Performance Very Strong Against GCC 4.9

Michael Larabel

Published on 30 December 2013
Written by Michael Larabel
Page 1 of 5 - 12 Comments

After earlier this month delivering LLVM Clang 3.3/3.4 benchmarks for the new compiler infrastructure out of Apple, today are results that directly compare the new LLVM Clang 3.4 performance against the stable GCC 4.8.2 compiler and GCC 4.9.0 development compiler under various C/C++ benchmarks.

Today's test results to end out 2013 build upon the earlier Clang 3.3/3.4 testing on the Intel Core i7 4960X "Ivy Bridge" Extreme Edition system running Ubuntu 14.04 (development) with the Linux 3.13 kernel. Like LLVM/Clang, GCC 4.8.2 and GCC 4.9.0 20131208 were compiled for C/C++ support in their release/optimized modes.

All of this benchmarking was handled via the Phoronix Test Suite. The CFLAGS/CXXFLAGS set during testing were "-O3 -march=native" for all four compiler configurations.

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