with manual pre-jitting
The Chrome V8 JIT is already optimized for the Richards benchmark, so its harder to make it run any faster. Using a V8 native JIT call to force a method to be optimized before the benchmark timer, it is possible to get a tiny 1/50th of a second more speed. It would be interesting if V8 exposed other native calls that could improve performance. This is enabled with the command line option `--v8-natives`, and the syntax `v8->(F(args))` where `F(args)` is a function or method called with dummy arguments that will warm up the function so V8 can infer its static types.