I experimented with using TCC as an experimental native code compilation backend for a scripting language. Was pretty impressed how easy it was to embed compared to some other solutions I tried.
The language had a fairly basic AST, was fairly C-Like, and used fairly basic programming constructs (e.g. at most functions are just a call into a dispatcher) so it translates reasonably well to C. Didn't pursue the project too far, so not really anything concrete to show.
@buserror's project sounds like a better example with code.
