Rollup merge of rust-lang#103520 - petrochenkov:resout, r=cjgillot

rustc_middle: Rearrange resolver outputs structures slightly

Addresses rust-lang#98106 (comment).
I also haven't seen the motivation for moving `cstore` from its old place, so I moved it back in this PR.
r? ```@cjgillot```

Author: Dylan-DPC

compiler/rustc_interface/src/passes.rs

@@ -16,7 +16,6 @@ use rustc_data_structures::sync::{Lrc, OnceCell, WorkerLocal};
 use rustc_errors::{ErrorGuaranteed, PResult};
 use rustc_expand::base::{ExtCtxt, LintStoreExpand, ResolverExpand};
 use rustc_hir::def_id::StableCrateId;
-use rustc_hir::definitions::Definitions;
 use rustc_lint::{BufferedEarlyLint, EarlyCheckNode, LintStore};
 use rustc_metadata::creader::CStore;
 use rustc_middle::arena::Arena;
@@ -30,7 +29,7 @@ use rustc_plugin_impl as plugin;
 use rustc_query_impl::{OnDiskCache, Queries as TcxQueries};
 use rustc_resolve::{Resolver, ResolverArenas};
 use rustc_session::config::{CrateType, Input, OutputFilenames, OutputType};
-use rustc_session::cstore::{CrateStoreDyn, MetadataLoader, MetadataLoaderDyn};
+use rustc_session::cstore::{MetadataLoader, MetadataLoaderDyn};
 use rustc_session::output::filename_for_input;
 use rustc_session::search_paths::PathKind;
 use rustc_session::{Limit, Session};
@@ -135,10 +134,7 @@ mod boxed_resolver {
             f((&mut *resolver).as_mut().unwrap())
         }
 
-        pub fn to_resolver_outputs(
-            resolver: Rc<RefCell<BoxedResolver>>,
-        ) -> (Definitions, Box<CrateStoreDyn>, ty::ResolverOutputs, ty::ResolverAstLowering)
-        {
+        pub fn to_resolver_outputs(resolver: Rc<RefCell<BoxedResolver>>) -> ty::ResolverOutputs {
             match Rc::try_unwrap(resolver) {
                 Ok(resolver) => {
                     let mut resolver = resolver.into_inner();
@@ -788,8 +784,7 @@ pub fn create_global_ctxt<'tcx>(
     // incr. comp. yet.
     dep_graph.assert_ignored();
 
-    let (definitions, cstore, resolver_outputs, resolver_for_lowering) =
-        BoxedResolver::to_resolver_outputs(resolver);
+    let resolver_outputs = BoxedResolver::to_resolver_outputs(resolver);
 
     let sess = &compiler.session();
     let query_result_on_disk_cache = rustc_incremental::load_query_result_cache(sess);
@@ -816,10 +811,7 @@ pub fn create_global_ctxt<'tcx>(
                 lint_store,
                 arena,
                 hir_arena,
-                definitions,
-                cstore,
                 resolver_outputs,
-                resolver_for_lowering,
                 krate,
                 dep_graph,
                 queries.on_disk_cache.as_ref().map(OnDiskCache::as_dyn),

compiler/rustc_middle/src/query/mod.rs

@@ -23,7 +23,7 @@ rustc_queries! {
         desc { "triggering a delay span bug" }
     }
 
-    query resolutions(_: ()) -> &'tcx ty::ResolverOutputs {
+    query resolutions(_: ()) -> &'tcx ty::ResolverGlobalCtxt {
         eval_always
         no_hash
         desc { "getting the resolver outputs" }

compiler/rustc_middle/src/ty/context.rs

@@ -79,7 +79,7 @@ use std::mem;
 use std::ops::{Bound, Deref};
 use std::sync::Arc;
 
-use super::{ImplPolarity, RvalueScopes};
+use super::{ImplPolarity, ResolverOutputs, RvalueScopes};
 
 pub trait OnDiskCache<'tcx>: rustc_data_structures::sync::Sync {
     /// Creates a new `OnDiskCache` instance from the serialized data in `data`.
@@ -1067,10 +1067,9 @@ pub struct GlobalCtxt<'tcx> {
     pub consts: CommonConsts<'tcx>,
 
     definitions: RwLock<Definitions>,
-    cstore: Box<CrateStoreDyn>,
 
     /// Output of the resolver.
-    pub(crate) untracked_resolutions: ty::ResolverOutputs,
+    pub(crate) untracked_resolutions: ty::ResolverGlobalCtxt,
     untracked_resolver_for_lowering: Steal<ty::ResolverAstLowering>,
     /// The entire crate as AST. This field serves as the input for the hir_crate query,
     /// which lowers it from AST to HIR. It must not be read or used by anything else.
@@ -1233,10 +1232,7 @@ impl<'tcx> TyCtxt<'tcx> {
         lint_store: Lrc<dyn Any + sync::Send + sync::Sync>,
         arena: &'tcx WorkerLocal<Arena<'tcx>>,
         hir_arena: &'tcx WorkerLocal<hir::Arena<'tcx>>,
-        definitions: Definitions,
-        cstore: Box<CrateStoreDyn>,
-        untracked_resolutions: ty::ResolverOutputs,
-        untracked_resolver_for_lowering: ty::ResolverAstLowering,
+        resolver_outputs: ResolverOutputs,
         krate: Lrc<ast::Crate>,
         dep_graph: DepGraph,
         on_disk_cache: Option<&'tcx dyn OnDiskCache<'tcx>>,
@@ -1245,6 +1241,11 @@ impl<'tcx> TyCtxt<'tcx> {
         crate_name: &str,
         output_filenames: OutputFilenames,
     ) -> GlobalCtxt<'tcx> {
+        let ResolverOutputs {
+            definitions,
+            global_ctxt: untracked_resolutions,
+            ast_lowering: untracked_resolver_for_lowering,
+        } = resolver_outputs;
         let data_layout = TargetDataLayout::parse(&s.target).unwrap_or_else(|err| {
             s.emit_fatal(err);
         });
@@ -1253,7 +1254,7 @@ impl<'tcx> TyCtxt<'tcx> {
             &interners,
             s,
             &definitions,
-            &*cstore,
+            &*untracked_resolutions.cstore,
             // This is only used to create a stable hashing context.
             &untracked_resolutions.source_span,
         );
@@ -1268,7 +1269,6 @@ impl<'tcx> TyCtxt<'tcx> {
             interners,
             dep_graph,
             definitions: RwLock::new(definitions),
-            cstore,
             prof: s.prof.clone(),
             types: common_types,
             lifetimes: common_lifetimes,
@@ -1369,7 +1369,7 @@ impl<'tcx> TyCtxt<'tcx> {
         if let Some(id) = id.as_local() {
             self.definitions_untracked().def_key(id)
         } else {
-            self.cstore.def_key(id)
+            self.untracked_resolutions.cstore.def_key(id)
         }
     }
 
@@ -1383,7 +1383,7 @@ impl<'tcx> TyCtxt<'tcx> {
         if let Some(id) = id.as_local() {
             self.definitions_untracked().def_path(id)
         } else {
-            self.cstore.def_path(id)
+            self.untracked_resolutions.cstore.def_path(id)
         }
     }
 
@@ -1393,7 +1393,7 @@ impl<'tcx> TyCtxt<'tcx> {
         if let Some(def_id) = def_id.as_local() {
             self.definitions_untracked().def_path_hash(def_id)
         } else {
-            self.cstore.def_path_hash(def_id)
+            self.untracked_resolutions.cstore.def_path_hash(def_id)
         }
     }
 
@@ -1402,7 +1402,7 @@ impl<'tcx> TyCtxt<'tcx> {
         if crate_num == LOCAL_CRATE {
             self.sess.local_stable_crate_id()
         } else {
-            self.cstore.stable_crate_id(crate_num)
+            self.untracked_resolutions.cstore.stable_crate_id(crate_num)
         }
     }
 
@@ -1413,7 +1413,7 @@ impl<'tcx> TyCtxt<'tcx> {
         if stable_crate_id == self.sess.local_stable_crate_id() {
             LOCAL_CRATE
         } else {
-            self.cstore.stable_crate_id_to_crate_num(stable_crate_id)
+            self.untracked_resolutions.cstore.stable_crate_id_to_crate_num(stable_crate_id)
         }
     }
 
@@ -1432,8 +1432,9 @@ impl<'tcx> TyCtxt<'tcx> {
         } else {
             // If this is a DefPathHash from an upstream crate, let the CrateStore map
             // it to a DefId.
-            let cnum = self.cstore.stable_crate_id_to_crate_num(stable_crate_id);
-            self.cstore.def_path_hash_to_def_id(cnum, hash)
+            let cstore = &*self.untracked_resolutions.cstore;
+            let cnum = cstore.stable_crate_id_to_crate_num(stable_crate_id);
+            cstore.def_path_hash_to_def_id(cnum, hash)
         }
     }
 
@@ -1445,7 +1446,7 @@ impl<'tcx> TyCtxt<'tcx> {
         let (crate_name, stable_crate_id) = if def_id.is_local() {
             (self.crate_name, self.sess.local_stable_crate_id())
         } else {
-            let cstore = &self.cstore;
+            let cstore = &*self.untracked_resolutions.cstore;
             (cstore.crate_name(def_id.krate), cstore.stable_crate_id(def_id.krate))
         };
 
@@ -1520,7 +1521,7 @@ impl<'tcx> TyCtxt<'tcx> {
     /// Note that this is *untracked* and should only be used within the query
     /// system if the result is otherwise tracked through queries
     pub fn cstore_untracked(self) -> &'tcx CrateStoreDyn {
-        &*self.cstore
+        &*self.untracked_resolutions.cstore
     }
 
     /// Note that this is *untracked* and should only be used within the query
@@ -1546,7 +1547,7 @@ impl<'tcx> TyCtxt<'tcx> {
         let hcx = StableHashingContext::new(
             self.sess,
             &*definitions,
-            &*self.cstore,
+            &*self.untracked_resolutions.cstore,
             &self.untracked_resolutions.source_span,
         );
         f(hcx)
@@ -2364,7 +2365,7 @@ impl<'tcx> TyCtxt<'tcx> {
             st,
             self.sess,
             &self.definitions.read(),
-            &*self.cstore,
+            &*self.untracked_resolutions.cstore,
             // This is only used to create a stable hashing context.
             &self.untracked_resolutions.source_span,
         )

compiler/rustc_middle/src/ty/mod.rs

@@ -38,11 +38,13 @@ use rustc_data_structures::tagged_ptr::CopyTaggedPtr;
 use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, CtorOf, DefKind, LifetimeRes, Res};
 use rustc_hir::def_id::{CrateNum, DefId, LocalDefId, LocalDefIdMap};
+use rustc_hir::definitions::Definitions;
 use rustc_hir::Node;
 use rustc_index::vec::IndexVec;
 use rustc_macros::HashStable;
 use rustc_query_system::ich::StableHashingContext;
 use rustc_serialize::{Decodable, Encodable};
+use rustc_session::cstore::CrateStoreDyn;
 use rustc_span::hygiene::MacroKind;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{ExpnId, Span};
@@ -142,8 +144,15 @@ mod sty;
 
 pub type RegisteredTools = FxHashSet<Ident>;
 
-#[derive(Debug)]
 pub struct ResolverOutputs {
+    pub definitions: Definitions,
+    pub global_ctxt: ResolverGlobalCtxt,
+    pub ast_lowering: ResolverAstLowering,
+}
+
+#[derive(Debug)]
+pub struct ResolverGlobalCtxt {
+    pub cstore: Box<CrateStoreDyn>,
     pub visibilities: FxHashMap<LocalDefId, Visibility>,
     /// This field is used to decide whether we should make `PRIVATE_IN_PUBLIC` a hard error.
     pub has_pub_restricted: bool,

compiler/rustc_resolve/src/lib.rs

@@ -42,9 +42,10 @@ use rustc_metadata::creader::{CStore, CrateLoader};
 use rustc_middle::metadata::ModChild;
 use rustc_middle::middle::privacy::AccessLevels;
 use rustc_middle::span_bug;
-use rustc_middle::ty::{self, DefIdTree, MainDefinition, RegisteredTools, ResolverOutputs};
+use rustc_middle::ty::{self, DefIdTree, MainDefinition, RegisteredTools};
+use rustc_middle::ty::{ResolverGlobalCtxt, ResolverOutputs};
 use rustc_query_system::ich::StableHashingContext;
-use rustc_session::cstore::{CrateStore, CrateStoreDyn, MetadataLoaderDyn};
+use rustc_session::cstore::{CrateStore, MetadataLoaderDyn};
 use rustc_session::lint::LintBuffer;
 use rustc_session::Session;
 use rustc_span::hygiene::{ExpnId, LocalExpnId, MacroKind, SyntaxContext, Transparency};
@@ -1376,9 +1377,7 @@ impl<'a> Resolver<'a> {
         Default::default()
     }
 
-    pub fn into_outputs(
-        self,
-    ) -> (Definitions, Box<CrateStoreDyn>, ResolverOutputs, ty::ResolverAstLowering) {
+    pub fn into_outputs(self) -> ResolverOutputs {
         let proc_macros = self.proc_macros.iter().map(|id| self.local_def_id(*id)).collect();
         let definitions = self.definitions;
         let cstore = Box::new(self.crate_loader.into_cstore());
@@ -1394,7 +1393,8 @@ impl<'a> Resolver<'a> {
         let main_def = self.main_def;
         let confused_type_with_std_module = self.confused_type_with_std_module;
         let access_levels = self.access_levels;
-        let resolutions = ResolverOutputs {
+        let global_ctxt = ResolverGlobalCtxt {
+            cstore,
             source_span,
             expn_that_defined,
             visibilities,
@@ -1416,7 +1416,7 @@ impl<'a> Resolver<'a> {
             confused_type_with_std_module,
             registered_tools: self.registered_tools,
         };
-        let resolutions_lowering = ty::ResolverAstLowering {
+        let ast_lowering = ty::ResolverAstLowering {
             legacy_const_generic_args: self.legacy_const_generic_args,
             partial_res_map: self.partial_res_map,
             import_res_map: self.import_res_map,
@@ -1429,16 +1429,15 @@ impl<'a> Resolver<'a> {
             trait_map: self.trait_map,
             builtin_macro_kinds: self.builtin_macro_kinds,
         };
-        (definitions, cstore, resolutions, resolutions_lowering)
+        ResolverOutputs { definitions, global_ctxt, ast_lowering }
     }
 
-    pub fn clone_outputs(
-        &self,
-    ) -> (Definitions, Box<CrateStoreDyn>, ResolverOutputs, ty::ResolverAstLowering) {
+    pub fn clone_outputs(&self) -> ResolverOutputs {
         let proc_macros = self.proc_macros.iter().map(|id| self.local_def_id(*id)).collect();
         let definitions = self.definitions.clone();
         let cstore = Box::new(self.cstore().clone());
-        let resolutions = ResolverOutputs {
+        let global_ctxt = ResolverGlobalCtxt {
+            cstore,
             source_span: self.source_span.clone(),
             expn_that_defined: self.expn_that_defined.clone(),
             visibilities: self.visibilities.clone(),
@@ -1460,7 +1459,7 @@ impl<'a> Resolver<'a> {
             registered_tools: self.registered_tools.clone(),
             access_levels: self.access_levels.clone(),
         };
-        let resolutions_lowering = ty::ResolverAstLowering {
+        let ast_lowering = ty::ResolverAstLowering {
             legacy_const_generic_args: self.legacy_const_generic_args.clone(),
             partial_res_map: self.partial_res_map.clone(),
             import_res_map: self.import_res_map.clone(),
@@ -1473,7 +1472,7 @@ impl<'a> Resolver<'a> {
             trait_map: self.trait_map.clone(),
             builtin_macro_kinds: self.builtin_macro_kinds.clone(),
         };
-        (definitions, cstore, resolutions, resolutions_lowering)
+        ResolverOutputs { definitions, global_ctxt, ast_lowering }
     }
 
     fn create_stable_hashing_context(&self) -> StableHashingContext<'_> {