They do link to the code: https://github.com/JuliaLang/julia/tree/master/test/perf . It doesn't look like a very reliable microbenchmark - run test x 5 times - but it should provide a useful starting point if you want to run your own.
Thanks guys, I'm not sure how I missed that. The benchmarks look interesting, but it is strange how old an R version they used. That being said, its a really interesting language, and I look forward to playing with it.
