Clang 3.4 Performance Very Strong Against GCC 4.9

The Clang 3.4 performance for the Himeno scientific test is in line with GCC 4.8.2, but GCC 4.9.0 speeds ahead for this Poisson pressure solver to command the lead.

LLVM Clang easily wins over GCC when it comes to compile times... Clang is very well known for its very speedy compile times and surprisingly with Clang 3.4 the compile times can be even faster than Clang 3.3.

GCC still has a small lead over Clang when it comes to the multi-threaded C-Ray ray-tracer.