A Quick Look At GCC 4.9 vs. LLVM Clang 3.5

One of the test cases where Clang still noticeably trails behind GCC is the C-Ray multi-threaded benchmark.

In some benchmarks, GCC and Clang are neck-and-neck.

For FLAC audio encoding performance, Clang 3.5 SVN is running faster than GCC 4.8.2 but slower than the upcoming GCC 4.9 compiler release.

With MP3 encoding via LAME, Clang still has to catch-up to the GNU Compiler Collection.