Since the resources of that paper are not available anymore, do you happen to know if they used Clang for compiling their C code ? A 10% perf difference betwee

Since the resources of that paper are not available anymore, do you happen to know if they used Clang for compiling their C code ? A 10% perf difference between LLVM and GCC for different applications is in the order of magnitude of what all the hundreds of Phoronix benchmarks show every time a new version of these toolchains is released for general applications (e.g. not for micro-kernels).