With an interest of playing with LLVM based just in time compiling I made a clone of the [expr] family of objects that parses, compiles and then executes the compiled code versions of the expressions you provide it.
It could still use a little cleanup but I believe it has all of the features of the cloned objects now, plus a [print( message to print out the generated LLVM assembly.
I'm curious if anyone has some CPU intensive expr~ or fexpr~ examples that I could try to benchmark these against?