inc lowlevel return value

crates/compiler/module/src/low_level.rs

@@ -158,6 +158,7 @@ impl LowLevel {
 /// Some wrapper functions can just be replaced by lowlevels in the backend for performance.
 /// For example, Num.add should be an instruction, not a function call.
 /// Variant names are chosen to help explain what to do when adding new lowlevels
+#[derive(PartialEq, Eq)]
 pub enum LowLevelWrapperType {
     /// This wrapper function contains no logic and we can remove it in code gen
     CanBeReplacedBy(LowLevel),