type checking !?!?

src/ir/upper/mod.rs

@@ -1,10 +1,14 @@
 mod def;
 mod func;
 mod ty;
-mod namespace;
+mod program;
+mod validate;
+mod error;
+mod inst;
 
 use super::*;
 pub use def::*;
 pub use func::*;
 pub use ty::*;
-pub use namespace::*;
+pub use program::*;
+pub use inst::*;