LLVM/Clang 3.3 Very Competitive To GCC 4.8
Written by Michael Larabel in Software on 7 April 2013. Page 3 of 5. 7 Comments

LLVM/Clang 3.3 was also a winner for the CAST-256 test.

For some of the Botan tests, the compiler performance is rather indifferent.

GCC remains much faster than LLVM/Clang in a number of the benchmarks due to OpenMP not yet being supported in mainline by LLVM.