Ignore anti-deps in GCM for now

hercules_ir/src/gcm.rs

@@ -73,14 +73,15 @@ pub fn gcm(
             .as_ref()
             .into_iter()
             .map(|id| *id)
+            // TODO: once anti-dependence analysis is fixed, use it in GCM.
             // Include "uses" from anti-dependencies.
-            .chain(
-                antideps_uses
-                    .get(&id)
-                    .unwrap_or(&vec![])
-                    .into_iter()
-                    .map(|id| *id),
-            )
+            //.chain(
+            //    antideps_uses
+            //        .get(&id)
+            //        .unwrap_or(&vec![])
+            //        .into_iter()
+            //        .map(|id| *id),
+            //)
             .map(|id| schedule_early[id.idx()])
             .collect();
         if let Some(use_places) = use_places {
@@ -127,19 +128,16 @@ pub fn gcm(
 
             // For every user, consider where we need to be to directly dominate the
             // user.
-            for user in def_use
-                .get_users(id)
-                .as_ref()
-                .into_iter()
-                .map(|id| *id)
-                // Include "users" from anti-dependencies.
-                .chain(
-                    antideps_users
-                        .get(&id)
-                        .unwrap_or(&vec![])
-                        .into_iter()
-                        .map(|id| *id),
-                )
+            for user in def_use.get_users(id).as_ref().into_iter().map(|id| *id)
+            // TODO: once anti-dependence analysis is fixed, use it in GCM.
+            // Include "users" from anti-dependencies.
+            //.chain(
+            //    antideps_users
+            //        .get(&id)
+            //        .unwrap_or(&vec![])
+            //        .into_iter()
+            //        .map(|id| *id),
+            //)
             {
                 if let Node::Phi { control, data } = &function.nodes[user.idx()] {
                     // For phis, we need to dominate the block jumping to the phi in