I agree that compiling to C will not give you a great language implementation if you need this type of features; I think the implementation will be good enough

I agree that compiling to C will not give you a great language implementation if you need this type of features; I think the implementation will be good enough for many cases though. To take an extreme example, CPython isn't a bleeding edge Python implementation perhaps, but it's still the most popular and practically relevant one; this is in fact true for many popular dynamic languages, one big exception in recent years being JavaScript. Languages where a really great implementation might involve C code generation are probably indeed quite static, however. An example is Synopsys's VCS which AFAIK compiles Verilog to C++. My own hands-on experience with this type of thing is with an in-house HDL and an in-house C dialect with (sizable, static) extensions for accelerator programming.