Rename all_crate_nums query to crates and remove useless wrapper

compiler/rustc_codegen_ssa/src/back/symbol_export.rs

@@ -277,7 +277,7 @@ fn upstream_monomorphizations_provider(
     tcx: TyCtxt<'_>,
     (): (),
 ) -> DefIdMap<FxHashMap<SubstsRef<'_>, CrateNum>> {
-    let cnums = tcx.all_crate_nums(());
+    let cnums = tcx.crates(());
 
     let mut instances: DefIdMap<FxHashMap<_, _>> = Default::default();
 

compiler/rustc_codegen_ssa/src/back/write.rs

@@ -994,7 +994,7 @@ fn start_executing_work<B: ExtraBackendMethods>(
             }
             Lto::Fat | Lto::Thin => {
                 exported_symbols.insert(LOCAL_CRATE, copy_symbols(LOCAL_CRATE));
-                for &cnum in tcx.crates().iter() {
+                for &cnum in tcx.crates(()).iter() {
                     exported_symbols.insert(cnum, copy_symbols(cnum));
                 }
                 Some(Arc::new(exported_symbols))

compiler/rustc_codegen_ssa/src/base.rs

@@ -789,7 +789,7 @@ impl CrateInfo {
         };
         let lang_items = tcx.lang_items();
 
-        let crates = tcx.crates();
+        let crates = tcx.crates(());
 
         let n_crates = crates.len();
         info.native_libraries.reserve(n_crates);

compiler/rustc_metadata/src/dependency_format.rs

@@ -129,7 +129,7 @@ fn calculate_type(tcx: TyCtxt<'_>, ty: CrateType) -> DependencyList {
                 && sess.crt_static(Some(ty))
                 && !sess.target.crt_static_allows_dylibs)
         {
-            for &cnum in tcx.crates().iter() {
+            for &cnum in tcx.crates(()).iter() {
                 if tcx.dep_kind(cnum).macros_only() {
                     continue;
                 }
@@ -152,7 +152,7 @@ fn calculate_type(tcx: TyCtxt<'_>, ty: CrateType) -> DependencyList {
     // Sweep all crates for found dylibs. Add all dylibs, as well as their
     // dependencies, ensuring there are no conflicts. The only valid case for a
     // dependency to be relied upon twice is for both cases to rely on a dylib.
-    for &cnum in tcx.crates().iter() {
+    for &cnum in tcx.crates(()).iter() {
         if tcx.dep_kind(cnum).macros_only() {
             continue;
         }
@@ -170,7 +170,7 @@ fn calculate_type(tcx: TyCtxt<'_>, ty: CrateType) -> DependencyList {
     }
 
     // Collect what we've got so far in the return vector.
-    let last_crate = tcx.crates().len();
+    let last_crate = tcx.crates(()).len();
     let mut ret = (1..last_crate + 1)
         .map(|cnum| match formats.get(&CrateNum::new(cnum)) {
             Some(&RequireDynamic) => Linkage::Dynamic,
@@ -184,7 +184,7 @@ fn calculate_type(tcx: TyCtxt<'_>, ty: CrateType) -> DependencyList {
     //
     // If the crate hasn't been included yet and it's not actually required
     // (e.g., it's an allocator) then we skip it here as well.
-    for &cnum in tcx.crates().iter() {
+    for &cnum in tcx.crates(()).iter() {
         let src = tcx.used_crate_source(cnum);
         if src.dylib.is_none()
             && !formats.contains_key(&cnum)
@@ -281,7 +281,7 @@ fn attempt_static(tcx: TyCtxt<'_>) -> Option<DependencyList> {
 
     // All crates are available in an rlib format, so we're just going to link
     // everything in explicitly so long as it's actually required.
-    let last_crate = tcx.crates().len();
+    let last_crate = tcx.crates(()).len();
     let mut ret = (1..last_crate + 1)
         .map(|cnum| {
             if tcx.dep_kind(CrateNum::new(cnum)) == CrateDepKind::Explicit {

compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs

@@ -312,7 +312,7 @@ pub fn provide(providers: &mut Providers) {
             // which is to say, its not deterministic in general. But
             // we believe that libstd is consistently assigned crate
             // num 1, so it should be enough to resolve #46112.
-            let mut crates: Vec<CrateNum> = (*tcx.crates()).to_owned();
+            let mut crates: Vec<CrateNum> = (*tcx.crates(())).to_owned();
             crates.sort();
 
             for &cnum in crates.iter() {

compiler/rustc_metadata/src/rmeta/encoder.rs

@@ -1668,7 +1668,7 @@ impl EncodeContext<'a, 'tcx> {
 
     fn encode_crate_deps(&mut self) -> Lazy<[CrateDep]> {
         empty_proc_macro!(self);
-        let crates = self.tcx.crates();
+        let crates = self.tcx.crates(());
 
         let mut deps = crates
             .iter()

compiler/rustc_middle/src/middle/cstore.rs

@@ -229,7 +229,7 @@ pub type CrateStoreDyn = dyn CrateStore + sync::Sync;
 // positions.
 pub fn used_crates(tcx: TyCtxt<'_>, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)> {
     let mut libs = tcx
-        .crates()
+        .crates(())
         .iter()
         .cloned()
         .filter_map(|cnum| {

compiler/rustc_middle/src/query/mod.rs

@@ -1444,7 +1444,7 @@ rustc_queries! {
         eval_always
         desc { "calculating the stability index for the local crate" }
     }
-    query all_crate_nums(_: ()) -> &'tcx [CrateNum] {
+    query crates(_: ()) -> &'tcx [CrateNum] {
         eval_always
         desc { "fetching all foreign CrateNum instances" }
     }

compiler/rustc_middle/src/ty/context.rs

@@ -1259,10 +1259,6 @@ impl<'tcx> TyCtxt<'tcx> {
         self.stability_index(())
     }
 
-    pub fn crates(self) -> &'tcx [CrateNum] {
-        self.all_crate_nums(())
-    }
-
     pub fn features(self) -> &'tcx rustc_feature::Features {
         self.features_query(())
     }
@@ -2819,7 +2815,7 @@ pub fn provide(providers: &mut ty::query::Providers) {
         tcx.stability().local_deprecation_entry(id)
     };
     providers.extern_mod_stmt_cnum = |tcx, id| tcx.extern_crate_map.get(&id).cloned();
-    providers.all_crate_nums = |tcx, ()| tcx.arena.alloc_slice(&tcx.cstore.crates_untracked());
+    providers.crates = |tcx, ()| tcx.arena.alloc_slice(&tcx.cstore.crates_untracked());
     providers.output_filenames = |tcx, ()| tcx.output_filenames.clone();
     providers.features_query = |tcx, ()| tcx.sess.features_untracked();
     providers.is_panic_runtime = |tcx, cnum| {

compiler/rustc_middle/src/ty/print/pretty.rs

@@ -2248,7 +2248,7 @@ fn for_each_def(tcx: TyCtxt<'_>, mut collect_fn: impl for<'b> FnMut(&'b Ident, N
     let queue = &mut Vec::new();
     let mut seen_defs: DefIdSet = Default::default();
 
-    for &cnum in tcx.crates().iter() {
+    for &cnum in tcx.crates(()).iter() {
         let def_id = DefId { krate: cnum, index: CRATE_DEF_INDEX };
 
         // Ignore crates that are not direct dependencies.

compiler/rustc_middle/src/ty/query/on_disk_cache.rs

@@ -558,7 +558,7 @@ impl<'sess> OnDiskCache<'sess> {
     // maps to None.
     fn compute_cnum_map(tcx: TyCtxt<'_>) -> UnhashMap<StableCrateId, CrateNum> {
         tcx.dep_graph.with_ignore(|| {
-            tcx.all_crate_nums(())
+            tcx.crates(())
                 .iter()
                 .chain(std::iter::once(&LOCAL_CRATE))
                 .map(|&cnum| {

compiler/rustc_middle/src/ty/trait_def.rs

@@ -215,7 +215,7 @@ pub(super) fn trait_impls_of_provider(tcx: TyCtxt<'_>, trait_id: DefId) -> Trait
     // Traits defined in the current crate can't have impls in upstream
     // crates, so we don't bother querying the cstore.
     if !trait_id.is_local() {
-        for &cnum in tcx.crates().iter() {
+        for &cnum in tcx.crates(()).iter() {
             for &(impl_def_id, simplified_self_ty) in
                 tcx.implementations_of_trait((cnum, trait_id)).iter()
             {

compiler/rustc_passes/src/diagnostic_items.rs

@@ -121,7 +121,7 @@ fn all_diagnostic_items<'tcx>(tcx: TyCtxt<'tcx>, (): ()) -> FxHashMap<Symbol, De
     let mut collector = FxHashMap::default();
 
     // Collect diagnostic items in other crates.
-    for &cnum in tcx.crates().iter().chain(std::iter::once(&LOCAL_CRATE)) {
+    for &cnum in tcx.crates(()).iter().chain(std::iter::once(&LOCAL_CRATE)) {
         for (&name, &def_id) in tcx.diagnostic_items(cnum).iter() {
             collect_item(tcx, &mut collector, name, def_id);
         }

compiler/rustc_passes/src/lang_items.rs

@@ -309,7 +309,7 @@ fn get_lang_items(tcx: TyCtxt<'_>, (): ()) -> LanguageItems {
     let mut collector = LanguageItemCollector::new(tcx);
 
     // Collect lang items in other crates.
-    for &cnum in tcx.crates().iter() {
+    for &cnum in tcx.crates(()).iter() {
         for &(def_id, item_index) in tcx.defined_lang_items(cnum).iter() {
             collector.collect_item(item_index, def_id);
         }

compiler/rustc_passes/src/stability.rs

@@ -938,7 +938,7 @@ pub fn check_unused_or_stable_features(tcx: TyCtxt<'_>) {
     if !remaining_lib_features.is_empty() {
         check_features(&mut remaining_lib_features, &local_defined_features);
 
-        for &cnum in tcx.crates() {
+        for &cnum in tcx.crates(()) {
             if remaining_lib_features.is_empty() {
                 break;
             }

compiler/rustc_passes/src/weak_lang_items.rs

@@ -53,7 +53,7 @@ fn verify<'tcx>(tcx: TyCtxt<'tcx>, items: &lang_items::LanguageItems) {
     }
 
     let mut missing = FxHashSet::default();
-    for &cnum in tcx.crates().iter() {
+    for &cnum in tcx.crates(()).iter() {
         for &item in tcx.missing_lang_items(cnum).iter() {
             missing.insert(item);
         }

compiler/rustc_save_analysis/src/lib.rs

@@ -109,9 +109,9 @@ impl<'tcx> SaveContext<'tcx> {
 
     // List external crates used by the current crate.
     pub fn get_external_crates(&self) -> Vec<ExternalCrateData> {
-        let mut result = Vec::with_capacity(self.tcx.crates().len());
+        let mut result = Vec::with_capacity(self.tcx.crates(()).len());
 
-        for &n in self.tcx.crates().iter() {
+        for &n in self.tcx.crates(()).iter() {
             let span = match self.tcx.extern_crate(n.as_def_id()) {
                 Some(&ExternCrate { span, .. }) => span,
                 None => {

compiler/rustc_typeck/src/check/method/suggest.rs

@@ -1591,7 +1591,7 @@ fn compute_all_traits(tcx: TyCtxt<'_>, (): ()) -> &[DefId] {
             _ => {}
         }
     }
-    for &cnum in tcx.crates().iter() {
+    for &cnum in tcx.crates(()).iter() {
         let def_id = DefId { krate: cnum, index: CRATE_DEF_INDEX };
         handle_external_res(tcx, &mut traits, &mut external_mods, Res::Def(DefKind::Mod, def_id));
     }

src/librustdoc/clean/utils.rs

@@ -30,7 +30,7 @@ crate fn krate(cx: &mut DocContext<'_>) -> Crate {
     cx.cache.owned_box_did = cx.tcx.lang_items().owned_box();
 
     let mut externs = Vec::new();
-    for &cnum in cx.tcx.crates().iter() {
+    for &cnum in cx.tcx.crates(()).iter() {
         externs.push((cnum, cnum.clean(cx)));
         // Analyze doc-reachability for extern items
         LibEmbargoVisitor::new(cx).visit_lib(cnum);

src/librustdoc/passes/collect_trait_impls.rs

@@ -29,7 +29,7 @@ crate fn collect_trait_impls(krate: Crate, cx: &mut DocContext<'_>) -> Crate {
 
     let mut new_items = Vec::new();
 
-    for &cnum in cx.tcx.crates().iter() {
+    for &cnum in cx.tcx.crates(()).iter() {
         for &(did, _) in cx.tcx.all_trait_implementations(cnum).iter() {
             cx.tcx.sess.prof.generic_activity("build_extern_trait_impl").run(|| {
                 inline::build_impl(cx, None, did, None, &mut new_items);
@@ -85,7 +85,7 @@ crate fn collect_trait_impls(krate: Crate, cx: &mut DocContext<'_>) -> Crate {
         }
     });
 
-    // `tcx.crates()` doesn't include the local crate, and `tcx.all_trait_implementations`
+    // `tcx.crates(())` doesn't include the local crate, and `tcx.all_trait_implementations`
     // doesn't work with it anyway, so pull them from the HIR map instead
     let mut extra_attrs = Vec::new();
     for &trait_did in cx.tcx.all_traits(()).iter() {

src/tools/clippy/clippy_utils/src/lib.rs

@@ -493,7 +493,7 @@ pub fn path_to_res(cx: &LateContext<'_>, path: &[&str]) -> Res {
         _ => return Res::Err,
     };
     let tcx = cx.tcx;
-    let crates = tcx.crates();
+    let crates = tcx.crates(());
     let krate = try_res!(crates.iter().find(|&&num| tcx.crate_name(num).as_str() == krate));
     let first = try_res!(item_child_by_name(tcx, krate.as_def_id(), first));
     let last = path