bandaid fix

src/ast/typed.rs

@@ -145,7 +145,7 @@ impl TypedExpr {
             };
 
             let expr = if optimization_level >= OLevel::O2 {
-                optimization::bubble_binop_vars(expr)
+                optimization::bubble_binop_vars(optimization::bubble_binop_vars(expr))
             } else {
                 expr
             };