imalsogreg commented on a change in pull request #6741:
URL: https://github.com/apache/incubator-tvm/pull/6741#discussion_r512007489



##########
File path: rust/tvm-macros/src/object.rs
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@@ -185,5 +187,26 @@ pub fn macro_impl(input: proc_macro::TokenStream) -> 
TokenStream {
 
     expanded.extend(base_tokens);
 
+    if derive {
+        let derives = quote! {
+            impl std::hash::Hash for #ref_id {
+                fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+                    self.0.hash(state)

Review comment:
       Possibly dumb comment (I'm not familiar with this macro) - is `self.0` 
always the right thing to hash? Or is `#ref_id` sometimes a tuple with multiple 
fields, where field `.1` and `.2` etc. may be part of what distinguishes 
objects when hashing?




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