remove intermediate enum / directly encode assembly

src/arch/x86_64/mod.rs

@@ -1,7 +1,6 @@
-mod asm;
+mod compile;
 mod encode;
 mod reg;
-mod reg2;
 mod test;
 mod util;
 
@@ -11,7 +10,7 @@ use crate::{
     io::CompilerMsg,
 };
 
-pub use asm::*;
+pub use compile::*;
 pub use encode::*;
 pub use reg::*;
 pub use test::bin::run as bin_test;
@@ -20,7 +19,7 @@ pub struct X86_64;
 
 impl Arch for X86_64 {
     const NAME: &str = "x86_64";
-    type Asm = Asm;
+    type Asm = Code;
     type Addr = u64;
     fn compile(p: &Program<Self>) -> Result<LinkedProgram<Self::Addr>, CompilerMsg> {
         compile(p)