Macro run_with_tcx

macro_rules! run_with_tcx {
    ($args:expr, $callback_fn:ident) => { ... };
    ($args:expr, $callback:expr) => { ... };
}

Instantiate and run the compiler with the provided arguments and callback.

This is similar to run but it invokes the callback with the compiler’s TyCtxt, which can be used to invoke internal APIs.