Convert implied_outlives_bounds to a query

Author: tmandry

src/librustc/dep_graph/dep_node.rs

@@ -649,6 +649,7 @@ define_dep_nodes!( <'tcx>
     [input] OutputFilenames,
     [] NormalizeProjectionTy(CanonicalProjectionGoal<'tcx>),
     [] NormalizeTyAfterErasingRegions(ParamEnvAnd<'tcx, Ty<'tcx>>),
+    [] ImpliedOutlivesBounds(CanonicalTyGoal<'tcx>),
     [] DropckOutlives(CanonicalTyGoal<'tcx>),
     [] EvaluateObligation(CanonicalPredicateGoal<'tcx>),
     [] TypeOpEq(CanonicalTypeOpEqGoal<'tcx>),

src/librustc/infer/outlives/bounds.rs

@@ -10,7 +10,7 @@
 
 use infer::{GenericKind, InferCtxt};
 use infer::outlives::free_region_map::FreeRegionMap;
-use infer::outlives::bounds::{self, OutlivesBound};
+use traits::query::outlives_bounds::{self, OutlivesBound};
 use ty::{self, Ty};
 
 use syntax::ast;
@@ -50,7 +50,7 @@ impl<'a, 'gcx: 'tcx, 'tcx: 'a> OutlivesEnvironment<'tcx> {
             region_bound_pairs: vec![],
         };
 
-        env.add_outlives_bounds(None, bounds::explicit_outlives_bounds(param_env));
+        env.add_outlives_bounds(None, outlives_bounds::explicit_outlives_bounds(param_env));
 
         env
     }

src/librustc/infer/outlives/env.rs

@@ -12,5 +12,4 @@
 
 pub mod env;
 pub mod free_region_map;
-pub mod bounds;
 pub mod obligations;

src/librustc/infer/outlives/mod.rs

@@ -23,6 +23,7 @@ pub mod dropck_outlives;
 pub mod evaluate_obligation;
 pub mod normalize;
 pub mod normalize_erasing_regions;
+pub mod outlives_bounds;
 pub mod type_op;
 
 pub type CanonicalProjectionGoal<'tcx> =