hir: Simplify hir_owner_nodes query

The query accept arbitrary DefIds, not just owner DefIds.
The return can be an `Option` because if there are no nodes, then it doesn't matter whether it's due to NonOwner or Phantom.
Also rename the query to `opt_hir_owner_nodes`.

Author: petrochenkov

compiler/rustc_incremental/src/assert_dep_graph.rs

@@ -131,7 +131,7 @@ impl<'tcx> IfThisChanged<'tcx> {
                     None => DepNode::from_def_path_hash(
                         self.tcx,
                         def_path_hash,
-                        dep_kinds::hir_owner_nodes,
+                        dep_kinds::opt_hir_owner_nodes,
                     ),
                     Some(n) => {
                         match DepNode::from_label_string(self.tcx, n.as_str(), def_path_hash) {

compiler/rustc_incremental/src/persist/dirty_clean.rs

@@ -57,8 +57,8 @@ const BASE_FN: &[&str] = &[
 
 /// DepNodes for Hir, which is pretty much everything
 const BASE_HIR: &[&str] = &[
-    // hir_owner_nodes should be computed for all nodes
-    label_strs::hir_owner_nodes,
+    // opt_hir_owner_nodes should be computed for all nodes
+    label_strs::opt_hir_owner_nodes,
 ];
 
 /// `impl` implementation of struct/trait

compiler/rustc_middle/src/hir/map/mod.rs

@@ -135,12 +135,12 @@ impl<'hir> Iterator for ParentOwnerIterator<'hir> {
 impl<'tcx> TyCtxt<'tcx> {
     #[inline]
     fn hir_owner(self, owner: OwnerId) -> Option<OwnerNode<'tcx>> {
-        Some(self.hir_owner_nodes(owner).as_owner()?.node())
+        Some(self.opt_hir_owner_nodes(owner.def_id)?.node())
     }
 
     /// Retrieves the `hir::Node` corresponding to `id`, returning `None` if cannot be found.
     pub fn opt_hir_node(self, id: HirId) -> Option<Node<'tcx>> {
-        let owner = self.hir_owner_nodes(id.owner).as_owner()?;
+        let owner = self.opt_hir_owner_nodes(id.owner)?;
         let node = owner.nodes[id.local_id].as_ref()?;
         Some(node.node)
     }
@@ -213,7 +213,7 @@ impl<'hir> Map<'hir> {
         if id.local_id == ItemLocalId::from_u32(0) {
             Some(self.tcx.hir_owner_parent(id.owner))
         } else {
-            let owner = self.tcx.hir_owner_nodes(id.owner).as_owner()?;
+            let owner = self.tcx.opt_hir_owner_nodes(id.owner)?;
             let node = owner.nodes[id.local_id].as_ref()?;
             let hir_id = HirId { owner: id.owner, local_id: node.parent };
             // HIR indexing should have checked that.
@@ -266,7 +266,7 @@ impl<'hir> Map<'hir> {
     }
 
     pub fn body(self, id: BodyId) -> &'hir Body<'hir> {
-        self.tcx.hir_owner_nodes(id.hir_id.owner).unwrap().bodies[&id.hir_id.local_id]
+        self.tcx.opt_hir_owner_nodes(id.hir_id.owner).unwrap().bodies[&id.hir_id.local_id]
     }
 
     #[track_caller]

compiler/rustc_middle/src/hir/mod.rs

@@ -135,13 +135,8 @@ pub fn provide(providers: &mut Providers) {
             MaybeOwner::NonOwner(hir_id) => hir_id,
         })
     };
-    providers.hir_owner_nodes = |tcx, id| {
-        if let Some(i) = tcx.hir_crate(()).owners.get(id.def_id) {
-            i.map(|i| &i.nodes)
-        } else {
-            MaybeOwner::Phantom
-        }
-    };
+    providers.opt_hir_owner_nodes =
+        |tcx, id| tcx.hir_crate(()).owners.get(id)?.as_owner().map(|i| &i.nodes);
     providers.hir_owner_parent = |tcx, id| {
         // Accessing the local_parent is ok since its value is hashed as part of `id`'s DefPathHash.
         tcx.opt_local_parent(id.def_id).map_or(CRATE_HIR_ID, |parent| {

compiler/rustc_middle/src/query/mod.rs

@@ -190,11 +190,11 @@ rustc_queries! {
         desc { |tcx| "getting HIR parent of `{}`", tcx.def_path_str(key) }
     }
 
-    /// Gives access to the HIR nodes and bodies inside the HIR owner `key`.
+    /// Gives access to the HIR nodes and bodies inside `key` if it's a HIR owner.
     ///
     /// This can be conveniently accessed by methods on `tcx.hir()`.
     /// Avoid calling this query directly.
-    query hir_owner_nodes(key: hir::OwnerId) -> hir::MaybeOwner<&'tcx hir::OwnerNodes<'tcx>> {
+    query opt_hir_owner_nodes(key: LocalDefId) -> Option<&'tcx hir::OwnerNodes<'tcx>> {
         desc { |tcx| "getting HIR owner items in `{}`", tcx.def_path_str(key) }
     }
 

compiler/rustc_mir_transform/src/coverage/mod.rs

@@ -452,7 +452,7 @@ fn get_body_span<'tcx>(
 fn hash_mir_source<'tcx>(tcx: TyCtxt<'tcx>, hir_body: &'tcx rustc_hir::Body<'tcx>) -> u64 {
     // FIXME(cjgillot) Stop hashing HIR manually here.
     let owner = hir_body.id().hir_id.owner;
-    tcx.hir_owner_nodes(owner)
+    tcx.opt_hir_owner_nodes(owner)
         .unwrap()
         .opt_hash_including_bodies
         .unwrap()

src/tools/clippy/clippy_lints/src/min_ident_chars.rs

@@ -93,7 +93,7 @@ impl Visitor<'_> for IdentVisitor<'_, '_> {
             // reimplement it even if we wanted to
             cx.tcx.opt_hir_node(hir_id)
         } else {
-            let Some(owner) = cx.tcx.hir_owner_nodes(hir_id.owner).as_owner() else {
+            let Some(owner) = cx.tcx.opt_hir_owner_nodes(hir_id.owner) else {
                 return;
             };
             owner.nodes.get(hir_id.local_id).copied().flatten().map(|p| p.node)