After seeing this and still having my strong willing to write some JIT Compiler in Rust, I created this :) .
I didn't want to use some assembler nor library like keystone or asmjit. I wanted to keep this project small and fun. And that's why it generates such suboptimal code.
The target architecture is Windows x64, cause why not? Linux is too mainstream.
Tested with rustc 1.22.1 (05e2e1c41 2017-11-22)
on Microsoft Windows [Version 10.0.16299.125]
using examples/num-guess.bf.
$ cargo run --release examples/num-guess.bf