Update privacy_access_levels

Author: Zoxc

src/librustc/arena.rs

@@ -82,6 +82,7 @@ macro_rules! arena_types {
             [few] stability_index: rustc::middle::stability::Index<'tcx>,
             [few] features: syntax::feature_gate::Features,
             [few] all_traits: Vec<rustc::hir::def_id::DefId>,
+            [few] privacy_access_levels: rustc::middle::privacy::AccessLevels,
         ], $tcx);
     )
 }

src/librustc/query/mod.rs

@@ -439,7 +439,7 @@ rustc_queries! {
         query check_match(_: DefId) -> () {}
 
         /// Performs part of the privacy check and computes "access levels".
-        query privacy_access_levels(_: CrateNum) -> Lrc<AccessLevels> {
+        query privacy_access_levels(_: CrateNum) -> &'tcx AccessLevels {
             eval_always
             desc { "privacy access levels" }
         }

src/librustc_privacy/lib.rs

@@ -24,7 +24,6 @@ use rustc::ty::query::Providers;
 use rustc::ty::subst::InternalSubsts;
 use rustc::util::nodemap::HirIdSet;
 use rustc_data_structures::fx::FxHashSet;
-use rustc_data_structures::sync::Lrc;
 use syntax::ast::Ident;
 use syntax::attr;
 use syntax::symbol::{keywords, sym};
@@ -1851,7 +1850,7 @@ fn check_mod_privacy<'tcx>(tcx: TyCtxt<'_, 'tcx, 'tcx>, module_def_id: DefId) {
 fn privacy_access_levels<'tcx>(
     tcx: TyCtxt<'_, 'tcx, 'tcx>,
     krate: CrateNum,
-) -> Lrc<AccessLevels> {
+) -> &'tcx AccessLevels {
     assert_eq!(krate, LOCAL_CRATE);
 
     // Build up a set of all exported items in the AST. This is a set of all
@@ -1872,7 +1871,7 @@ fn privacy_access_levels<'tcx>(
     }
     visitor.update(hir::CRATE_HIR_ID, Some(AccessLevel::Public));
 
-    Lrc::new(visitor.access_levels)
+    tcx.arena.alloc(visitor.access_levels)
 }
 
 fn check_private_in_public<'tcx>(tcx: TyCtxt<'_, 'tcx, 'tcx>, krate: CrateNum) {

src/librustc_save_analysis/lib.rs

@@ -24,7 +24,6 @@ use rustc::session::config::{CrateType, Input, OutputType};
 use rustc::ty::{self, DefIdTree, TyCtxt};
 use rustc::{bug, span_bug};
 use rustc_codegen_utils::link::{filename_for_metadata, out_filename};
-use rustc_data_structures::sync::Lrc;
 
 use std::cell::Cell;
 use std::default::Default;
@@ -1120,7 +1119,7 @@ pub fn process_crate<'l, 'tcx, H: SaveHandler>(
         // fallback in case the access levels couldn't have been correctly computed.
         let access_levels = match tcx.sess.compile_status() {
             Ok(..) => tcx.privacy_access_levels(LOCAL_CRATE),
-            Err(..) => Lrc::new(AccessLevels::default()),
+            Err(..) => tcx.arena.alloc(AccessLevels::default()),
         };
 
         let save_ctxt = SaveContext {