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A Linux Compiler Deathmatch: GCC, LLVM, DragonEgg, Open64, Etc...

Michael Larabel

Published on 31 January 2011
Written by Michael Larabel
Page 5 of 5 - 76 Comments

There was not a huge difference in the speed of the resulting 7-Zip binaries with the five different compilers, but the vanilla GCC releases were trying to inch ahead.

LLVM-GCC 4.2.1 lagged behind GCC 4.4.5/4.5.1 with the FLAC audio encoding performance using the newly built binaries.

LLVM-GCC 4.2.1 also struggled badly with the GraphicsMagick benchmarks.

Overall these results are not too surprising compared to our previous Linux compiler benchmarks. Though with the addition of the Open64 compiler we see that in a number of benchmarks its able to produce incredibly fast binaries that are dramatically faster than those produced by GCC. We'll be monitoring Open64 more closely, but for now be sure to also see the original compiler deathmatch thread with those separate test results, including of compiler tuning options.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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