Feed the hir_owner query instead of the other queries based off it

Author: oli-obk

compiler/rustc_hir/src/definitions.rs

@@ -91,6 +91,10 @@ impl DefPathTable {
         DefPathHash::new(self.stable_crate_id, hash)
     }
 
+    pub fn def_keys(&self) -> impl Iterator<Item = DefIndex> + ExactSizeIterator {
+        self.index_to_key.iter_enumerated().map(|(index, _)| index)
+    }
+
     pub fn enumerated_keys_and_path_hashes(
         &self,
     ) -> impl Iterator<Item = (DefIndex, &DefKey, DefPathHash)> + ExactSizeIterator {

compiler/rustc_hir/src/hir.rs

@@ -1314,11 +1314,15 @@ pub struct AttributeMap<'tcx> {
 }
 
 impl<'tcx> AttributeMap<'tcx> {
-    pub const EMPTY: &'static AttributeMap<'static> = &AttributeMap {
-        map: SortedMap::new(),
-        opt_hash: Some(Fingerprint::ZERO),
-        define_opaque: None,
-    };
+    pub const EMPTY: &'static AttributeMap<'static> = &Self::empty();
+
+    pub const fn empty() -> AttributeMap<'static> {
+        AttributeMap {
+            map: SortedMap::new(),
+            opt_hash: Some(Fingerprint::ZERO),
+            define_opaque: None,
+        }
+    }
 
     #[inline]
     pub fn get(&self, id: ItemLocalId) -> &'tcx [Attribute] {

compiler/rustc_middle/src/arena.rs

@@ -116,6 +116,7 @@ macro_rules! arena_types {
             [decode] specialization_graph: rustc_middle::traits::specialization_graph::Graph,
             [] crate_inherent_impls: rustc_middle::ty::CrateInherentImpls,
             [] hir_owner_nodes: rustc_hir::OwnerNodes<'tcx>,
+            [] owner_info: rustc_hir::OwnerInfo<'tcx>,
         ]);
     )
 }

compiler/rustc_middle/src/hir/mod.rs

@@ -181,7 +181,8 @@ pub fn provide(providers: &mut Providers) {
     providers.hir_crate_items = map::hir_crate_items;
     providers.crate_hash = map::crate_hash;
     providers.hir_module_items = map::hir_module_items;
-    providers.hir_owner = |tcx, def_id| tcx.hir_crate(()).owners[def_id];
+    providers.hir_owner =
+        |tcx, def_id| tcx.hir_crate(()).owners.get(def_id).copied().unwrap_or(MaybeOwner::Phantom);
     providers.local_def_id_to_hir_id = |tcx, def_id| match tcx.hir_owner(def_id) {
         MaybeOwner::Owner(_) => HirId::make_owner(def_id),
         MaybeOwner::NonOwner(hir_id) => hir_id,

compiler/rustc_middle/src/query/mod.rs

@@ -157,6 +157,7 @@ rustc_queries! {
     /// A query decoupling the `hir_crate` query from everything else
     query hir_owner(key: LocalDefId) -> rustc_hir::MaybeOwner<'tcx> {
         desc { |tcx| "getting HIR of `{}`", tcx.def_path_str(key) }
+        feedable
     }
 
     /// All items in the crate.
@@ -179,7 +180,6 @@ rustc_queries! {
     /// Returns HIR ID for the given `LocalDefId`.
     query local_def_id_to_hir_id(key: LocalDefId) -> hir::HirId {
         desc { |tcx| "getting HIR ID of `{}`", tcx.def_path_str(key) }
-        feedable
     }
 
     /// Gives access to the HIR node's parent for the HIR owner `key`.
@@ -196,7 +196,6 @@ rustc_queries! {
     /// Avoid calling this query directly.
     query opt_hir_owner_nodes(key: LocalDefId) -> Option<&'tcx hir::OwnerNodes<'tcx>> {
         desc { |tcx| "getting HIR owner items in `{}`", tcx.def_path_str(key) }
-        feedable
     }
 
     /// Gives access to the HIR attributes inside the HIR owner `key`.
@@ -205,7 +204,6 @@ rustc_queries! {
     /// Avoid calling this query directly.
     query hir_attr_map(key: hir::OwnerId) -> &'tcx hir::AttributeMap<'tcx> {
         desc { |tcx| "getting HIR owner attributes in `{}`", tcx.def_path_str(key) }
-        feedable
     }
 
     /// Returns the *default* of the const pararameter given by `DefId`.

compiler/rustc_middle/src/ty/context.rs

@@ -35,7 +35,7 @@ use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE, LocalDefId};
 use rustc_hir::definitions::Definitions;
 use rustc_hir::intravisit::VisitorExt;
 use rustc_hir::lang_items::LangItem;
-use rustc_hir::{self as hir, Attribute, HirId, Node, TraitCandidate};
+use rustc_hir::{self as hir, Attribute, HirId, MaybeOwner, Node, OwnerInfo, TraitCandidate};
 use rustc_index::IndexVec;
 use rustc_macros::{HashStable, TyDecodable, TyEncodable};
 use rustc_query_system::cache::WithDepNode;
@@ -1282,23 +1282,24 @@ impl<'tcx> TyCtxtFeed<'tcx, LocalDefId> {
 
     // Fills in all the important parts needed by HIR queries
     pub fn feed_hir(&self) {
-        self.local_def_id_to_hir_id(HirId::make_owner(self.def_id()));
-
         let node = hir::OwnerNode::Synthetic;
         let bodies = Default::default();
-        let attrs = hir::AttributeMap::EMPTY;
-
+        let attrs = hir::AttributeMap::empty();
         let (opt_hash_including_bodies, _) = self.tcx.hash_owner_nodes(node, &bodies, &attrs.map);
         let node = node.into();
-        self.opt_hir_owner_nodes(Some(self.tcx.arena.alloc(hir::OwnerNodes {
-            opt_hash_including_bodies,
-            nodes: IndexVec::from_elem_n(
-                hir::ParentedNode { parent: hir::ItemLocalId::INVALID, node },
-                1,
-            ),
-            bodies,
+        self.hir_owner(MaybeOwner::Owner(self.tcx.arena.alloc(OwnerInfo {
+            nodes: hir::OwnerNodes {
+                opt_hash_including_bodies,
+                nodes: IndexVec::from_elem_n(
+                    hir::ParentedNode { parent: hir::ItemLocalId::INVALID, node },
+                    1,
+                ),
+                bodies,
+            },
+            parenting: Default::default(),
+            attrs,
+            trait_map: Default::default(),
         })));
-        self.feed_owner_id().hir_attr_map(attrs);
     }
 }