GCC vs. LLVM/Clang On The AMD Richland APU
LLVM/Clang 3.3 runs quite well on the APU although AMD generally prefers working on its own AMD Open64 compiler and GCC, but they have contributed to Clang in the past for their CPU products.
Of course, LLVM/Clang 3.3 still lacks OpenMP support, so those tests are obviously in favor of GCC.
GCC 4.8.1 also had a slight lead over Clang 3.3 with the Himeno Poisson Pressure Solver.
GCC 4.8.1 is much faster than LLVM Clang 3.3 at handling C-Ray.