rustc_metadata: Use a query for collecting all traits in encoder

1 files changed, 1 insertions, 25 deletions

diff --git a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs
index 6ca190c9add..7ffc586fda3 100644
--- a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs
+++ b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs
@@ -4,11 +4,9 @@ use crate::native_libs;
 
 use rustc_ast as ast;
 use rustc_data_structures::stable_map::FxHashMap;
-use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, DefKind};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, CRATE_DEF_INDEX, LOCAL_CRATE};
 use rustc_hir::definitions::{DefKey, DefPath, DefPathHash};
-use rustc_hir::itemlikevisit::ItemLikeVisitor;
 use rustc_middle::hir::exports::Export;
 use rustc_middle::middle::exported_symbols::ExportedSymbol;
 use rustc_middle::middle::stability::DeprecationEntry;
@@ -243,7 +241,7 @@ provide! { <'tcx> tcx, def_id, other, cdata,
     expn_that_defined => { cdata.get_expn_that_defined(def_id.index, tcx.sess) }
 }
 
-pub fn provide(providers: &mut Providers) {
+pub(in crate::rmeta) fn provide(providers: &mut Providers) {
     // FIXME(#44234) - almost all of these queries have no sub-queries and
     // therefore no actual inputs, they're just reading tables calculated in
     // resolve! Does this work? Unsure! That's what the issue is about
@@ -289,28 +287,6 @@ pub fn provide(providers: &mut Providers) {
                 foreign_modules::collect(tcx).into_iter().map(|m| (m.def_id, m)).collect();
             Lrc::new(modules)
         },
-        traits_in_crate: |tcx, cnum| {
-            assert_eq!(cnum, LOCAL_CRATE);
-
-            #[derive(Default)]
-            struct TraitsVisitor {
-                traits: Vec<DefId>,
-            }
-            impl ItemLikeVisitor<'_> for TraitsVisitor {
-                fn visit_item(&mut self, item: &hir::Item<'_>) {
-                    if let hir::ItemKind::Trait(..) | hir::ItemKind::TraitAlias(..) = item.kind {
-                        self.traits.push(item.def_id.to_def_id());
-                    }
-                }
-                fn visit_trait_item(&mut self, _trait_item: &hir::TraitItem<'_>) {}
-                fn visit_impl_item(&mut self, _impl_item: &hir::ImplItem<'_>) {}
-                fn visit_foreign_item(&mut self, _foreign_item: &hir::ForeignItem<'_>) {}
-            }
-
-            let mut visitor = TraitsVisitor::default();
-            tcx.hir().visit_all_item_likes(&mut visitor);
-            tcx.arena.alloc_slice(&visitor.traits)
-        },
 
         // Returns a map from a sufficiently visible external item (i.e., an
         // external item that is visible from at least one local module) to a