refactor: use GAT in enum Ir

fix-codegen/src/disassembler.rs

@@ -79,19 +79,23 @@ impl<'a, Ctx: DisassemblerContext> Disassembler<'a, Ctx> {
 
     #[inline(always)]
     fn read_operand_data(&mut self) {
+        use OperandType::*;
         let tag = self.read_u8();
         let ty = OperandType::try_from_primitive(tag).expect("invalid operand type");
         match ty {
-            OperandType::Const => {
+            Const => {
                 self.read_u32();
             }
-            OperandType::Local => {
+            BigInt => {
+                self.read_i64();
+            }
+            Local => {
                 self.read_u8();
                 self.read_u32();
             }
-            OperandType::Builtins => {}
-            OperandType::BigInt => {
-                self.read_i64();
+            Builtins => {}
+            ReplBinding | ScopedImportBinding | WithLookup => {
+                self.read_u32();
             }
         }
     }