add a new dep node for outlives

Author: toidiu

src/librustc/dep_graph/dep_node.rs

@@ -476,6 +476,7 @@ define_dep_nodes!( <'tcx>
     [] TypeOfItem(DefId),
     [] GenericsOfItem(DefId),
     [] PredicatesOfItem(DefId),
+    [] InferredOutlivesOf(DefId),
     [] SuperPredicatesOfItem(DefId),
     [] TraitDefOfItem(DefId),
     [] AdtDefOfItem(DefId),

src/librustc/ty/maps/mod.rs

@@ -122,7 +122,7 @@ define_maps! { <'tcx>
     [] fn variances_of: ItemVariances(DefId) -> Rc<Vec<ty::Variance>>,
 
     /// Maps from def-id of a type to its (inferred) outlives.
-    [] fn inferred_outlives_of: PredicatesOfItem(DefId) -> Vec<ty::Predicate<'tcx>>,
+    [] fn inferred_outlives_of: InferredOutlivesOf(DefId) -> Vec<ty::Predicate<'tcx>>,
 
     /// Maps from an impl/trait def-id to a list of the def-ids of its items
     [] fn associated_item_def_ids: AssociatedItemDefIds(DefId) -> Rc<Vec<DefId>>,

src/librustc/ty/maps/plumbing.rs

@@ -736,6 +736,7 @@ pub fn force_from_dep_node<'a, 'gcx, 'lcx>(tcx: TyCtxt<'a, 'gcx, 'lcx>,
         DepKind::TypeOfItem => { force!(type_of, def_id!()); }
         DepKind::GenericsOfItem => { force!(generics_of, def_id!()); }
         DepKind::PredicatesOfItem => { force!(predicates_of, def_id!()); }
+        DepKind::InferredOutlivesOf => { force!(outlives_of, def_id!()); }
         DepKind::SuperPredicatesOfItem => { force!(super_predicates_of, def_id!()); }
         DepKind::TraitDefOfItem => { force!(trait_def, def_id!()); }
         DepKind::AdtDefOfItem => { force!(adt_def, def_id!()); }