fix(ir): Binary syntax and func var declare

src/ir/types.rs

@@ -19,7 +19,7 @@ impl Display for IRInstr {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             IRInstr::Entry => write!(f, "entry"),
-            IRInstr::Binary(dest, left, op, right) => write!(f, "{} = {} {} {}", dest, op, left, right),
+            IRInstr::Binary(dest, left, op, right) => write!(f, "{} = {} {},{}", dest, op, left, right),
             IRInstr::Exit(v) => if let Some(v) = v { write!(f, "exit {}", v) } else { write!(f, "exit") },
             IRInstr::FuncCall(func, args, dest) => {
                 if let Some(dest) = dest {
@@ -89,7 +89,7 @@ pub struct Variable {
 impl Display for Variable {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         let prefix = match self.var_type {
-            VariableType::Global => "@",
+            VariableType::Global => "@g",
             VariableType::Local => "%l",
             VariableType::Temp => "%t",
             VariableType::ParamTemp => "%t",