Update visible_parent_map

Author: Zoxc

src/librustc/arena.rs

@@ -93,6 +93,7 @@ macro_rules! arena_types {
             >,
             [few] get_lib_features: rustc::middle::lib_features::LibFeatures,
             [few] defined_lib_features: rustc::middle::lang_items::LanguageItems,
+            [few] visible_parent_map: rustc::util::nodemap::DefIdMap<rustc::hir::def_id::DefId>,
         ], $tcx);
     )
 }

src/librustc/query/mod.rs

@@ -808,7 +808,7 @@ rustc_queries! {
             desc { "calculating the missing lang items in a crate" }
         }
         query visible_parent_map(_: CrateNum)
-            -> Lrc<DefIdMap<DefId>> {
+            -> &'tcx DefIdMap<DefId> {
             desc { "calculating the visible parent map" }
         }
         query missing_extern_crate_item(_: CrateNum) -> bool {

src/librustc_metadata/cstore_impl.rs

@@ -376,7 +376,7 @@ pub fn provide<'tcx>(providers: &mut Providers<'tcx>) {
                 }
             }
 
-            Lrc::new(visible_parent_map)
+            tcx.arena.alloc(visible_parent_map)
         },
 
         ..*providers