Implement const effect predicate in new solver

compiler/rustc_middle/src/query/mod.rs

@@ -683,6 +683,24 @@ rustc_queries! {
         }
     }
 
+    query const_conditions(
+        key: DefId
+    ) -> ty::ConstConditions<'tcx> {
+        desc { |tcx| "computing the conditions for `{}` to be considered const",
+            tcx.def_path_str(key)
+        }
+        separate_provide_extern
+    }
+
+    query implied_const_bounds(
+        key: DefId
+    ) -> ty::EarlyBinder<'tcx, &'tcx [(ty::PolyTraitRef<'tcx>, Span)]> {
+        desc { |tcx| "computing the implied `~const` bounds for `{}`",
+            tcx.def_path_str(key)
+        }
+        separate_provide_extern
+    }
+
     /// To avoid cycles within the predicates of a single item we compute
     /// per-type-parameter predicates for resolving `T::AssocTy`.
     query type_param_predicates(