initial implementation

compiler/mono/src/code_gen_help/equality.rs

@@ -34,6 +34,7 @@ pub fn eq_generic<'a>(
         Layout::Builtin(Builtin::List(elem_layout)) => eq_list(root, ident_ids, ctx, elem_layout),
         Layout::Struct { field_layouts, .. } => eq_struct(root, ident_ids, ctx, field_layouts),
         Layout::Union(union_layout) => eq_tag_union(root, ident_ids, ctx, union_layout),
+        Layout::Boxed(inner_layout) => eq_boxed(root, ident_ids, ctx, inner_layout),
         Layout::LambdaSet(_) => unreachable!("`==` is not defined on functions"),
         Layout::RecursivePointer => {
             unreachable!(
@@ -528,6 +529,15 @@ fn eq_tag_fields<'a>(
     stmt
 }
 
+fn eq_boxed<'a>(
+    root: &mut CodeGenHelp<'a>,
+    ident_ids: &mut IdentIds,
+    ctx: &mut Context<'a>,
+    inner_layout: &'a Layout<'a>,
+) -> Stmt<'a> {
+    todo!()
+}
+
 /// List equality
 /// We can't use `ListGetUnsafe` because it increments the refcount, and we don't want that.
 /// Another way to dereference a heap pointer is to use `Expr::UnionAtIndex`.