jit works yay

src/bin/ngrun.rs

@@ -1,5 +1,6 @@
 use clap::Parser;
 use codespan_reporting::files::SimpleFiles;
+use ngr::backend::Backend;
 use ngr::eval::Value;
 use ngr::syntax;
 use ngr::type_infer::TypeInferenceResult;
@@ -70,5 +71,12 @@ fn main() -> Result<(), anyhow::Error> {
         return Ok(());
     }
 
-    unimplemented!();
-}
+    let mut backend = Backend::jit(None)?;
+    let function_id = backend.compile_program("gogogo", ir)?;
+    backend.module.finalize_definitions()?;
+    let compiled_bytes = backend.bytes(function_id);
+    let compiled_function = unsafe { std::mem::transmute::<_, fn() -> ()>(compiled_bytes) };
+    compiled_function();
+
+    Ok(())
+}