Remove hir::Crate::attrs.

compiler/rustc_ast_lowering/src/lib.rs

@@ -568,7 +568,7 @@ fn visit_ty(&mut self, t: &'tcx Ty) {
         visit::walk_crate(&mut item::ItemLowerer { lctx: &mut self }, c);
 
         let module = self.lower_mod(&c.items, c.span);
-        let attrs = self.lower_attrs(hir::CRATE_HIR_ID, &c.attrs);
+        self.lower_attrs(hir::CRATE_HIR_ID, &c.attrs);
         let body_ids = body_ids(&self.bodies);
         let proc_macros =
             c.proc_macros.iter().map(|id| self.node_id_to_hir_id[*id].unwrap()).collect();
@@ -599,7 +599,7 @@ fn visit_ty(&mut self, t: &'tcx Ty) {
         self.attrs.push_owner(Idx::new(self.resolver.definitions().def_index_count() - 1));
 
         hir::Crate {
-            item: hir::CrateItem { module, attrs, span: c.span },
+            item: hir::CrateItem { module, span: c.span },
             exported_macros: self.arena.alloc_from_iter(self.exported_macros),
             non_exported_macro_attrs: self.arena.alloc_from_iter(self.non_exported_macro_attrs),
             items: self.items,

compiler/rustc_codegen_ssa/src/back/write.rs

@@ -433,12 +433,10 @@ pub fn start_async_codegen<B: ExtraBackendMethods>(
     let sess = tcx.sess;
 
     let crate_name = tcx.crate_name(LOCAL_CRATE);
-    let no_builtins = tcx.sess.contains_name(&tcx.hir().krate().item.attrs, sym::no_builtins);
-    let is_compiler_builtins =
-        tcx.sess.contains_name(&tcx.hir().krate().item.attrs, sym::compiler_builtins);
-    let subsystem = tcx
-        .sess
-        .first_attr_value_str_by_name(&tcx.hir().krate().item.attrs, sym::windows_subsystem);
+    let crate_attrs = tcx.hir().attrs(rustc_hir::CRATE_HIR_ID);
+    let no_builtins = tcx.sess.contains_name(crate_attrs, sym::no_builtins);
+    let is_compiler_builtins = tcx.sess.contains_name(crate_attrs, sym::compiler_builtins);
+    let subsystem = tcx.sess.first_attr_value_str_by_name(crate_attrs, sym::windows_subsystem);
     let windows_subsystem = subsystem.map(|subsystem| {
         if subsystem != sym::windows && subsystem != sym::console {
             tcx.sess.fatal(&format!(

compiler/rustc_hir/src/hir.rs

@@ -629,7 +629,6 @@ pub struct ModuleItems {
 #[derive(Encodable, Debug, HashStable_Generic)]
 pub struct CrateItem<'hir> {
     pub module: Mod<'hir>,
-    pub attrs: &'hir [Attribute],
     pub span: Span,
 }
 

compiler/rustc_hir_pretty/src/lib.rs

@@ -168,7 +168,7 @@ pub fn print_crate<'a>(
     // When printing the AST, we sometimes need to inject `#[no_std]` here.
     // Since you can't compile the HIR, it's not necessary.
 
-    s.print_mod(&krate.item.module, &krate.item.attrs);
+    s.print_mod(&krate.item.module, krate.attrs[hir::CRATE_HIR_ID]);
     s.print_remaining_comments();
     s.s.eof()
 }

compiler/rustc_incremental/src/assert_module_sources.rs

@@ -44,7 +44,7 @@ pub fn assert_module_sources(tcx: TyCtxt<'_>) {
 
         let ams = AssertModuleSource { tcx, available_cgus };
 
-        for attr in tcx.hir().krate().item.attrs {
+        for attr in tcx.hir().attrs(rustc_hir::CRATE_HIR_ID) {
             ams.check_attr(attr);
         }
     })

compiler/rustc_lint/src/levels.rs

@@ -38,7 +38,7 @@ fn lint_levels(tcx: TyCtxt<'_>, cnum: CrateNum) -> LintLevelMap {
 
     builder.levels.id_to_set.reserve(krate.exported_macros.len() + 1);
 
-    let push = builder.levels.push(&krate.item.attrs, &store, true);
+    let push = builder.levels.push(tcx.hir().attrs(hir::CRATE_HIR_ID), &store, true);
     builder.levels.register_id(hir::CRATE_HIR_ID);
     for macro_def in krate.exported_macros {
         builder.levels.register_id(macro_def.hir_id());

compiler/rustc_metadata/src/link_args.rs

@@ -8,7 +8,7 @@
     let mut collector = Collector { tcx, args: Vec::new() };
     tcx.hir().krate().visit_all_item_likes(&mut collector);
 
-    for attr in tcx.hir().krate().item.attrs.iter() {
+    for attr in tcx.hir().attrs(hir::CRATE_HIR_ID).iter() {
         if attr.has_name(sym::link_args) {
             if let Some(linkarg) = attr.value_str() {
                 collector.add_link_args(linkarg);

compiler/rustc_passes/src/entry.rs

@@ -2,7 +2,7 @@
 use rustc_errors::struct_span_err;
 use rustc_hir::def_id::{CrateNum, LocalDefId, CRATE_DEF_INDEX, LOCAL_CRATE};
 use rustc_hir::itemlikevisit::ItemLikeVisitor;
-use rustc_hir::{ForeignItem, HirId, ImplItem, Item, ItemKind, TraitItem};
+use rustc_hir::{ForeignItem, HirId, ImplItem, Item, ItemKind, TraitItem, CRATE_HIR_ID};
 use rustc_middle::hir::map::Map;
 use rustc_middle::ty::query::Providers;
 use rustc_middle::ty::TyCtxt;
@@ -60,7 +60,7 @@ fn entry_fn(tcx: TyCtxt<'_>, cnum: CrateNum) -> Option<(LocalDefId, EntryFnType)
     }
 
     // If the user wants no main function at all, then stop here.
-    if tcx.sess.contains_name(&tcx.hir().krate().item.attrs, sym::no_main) {
+    if tcx.sess.contains_name(&tcx.hir().attrs(CRATE_HIR_ID), sym::no_main) {
         return None;
     }
 

compiler/rustc_save_analysis/src/dump_visitor.rs

@@ -1118,6 +1118,7 @@ pub(crate) fn process_crate(&mut self, krate: &'tcx hir::Crate<'tcx>) {
             .map(|i| id_from_def_id(i.def_id.to_def_id()))
             .collect();
         let span = self.span_from_span(krate.item.span);
+        let attrs = self.tcx.hir().attrs(id);
 
         self.dumper.dump_def(
             &Access { public: true, reachable: true },
@@ -1131,9 +1132,9 @@ pub(crate) fn process_crate(&mut self, krate: &'tcx hir::Crate<'tcx>) {
                 children,
                 parent: None,
                 decl_id: None,
-                docs: self.save_ctxt.docs_for_attrs(krate.item.attrs),
+                docs: self.save_ctxt.docs_for_attrs(attrs),
                 sig: None,
-                attributes: lower_attributes(krate.item.attrs.to_owned(), &self.save_ctxt),
+                attributes: lower_attributes(attrs.to_owned(), &self.save_ctxt),
             },
         );
         intravisit::walk_crate(self, krate);

src/librustdoc/doctest.rs

@@ -106,25 +106,27 @@
 
     let tests = interface::run_compiler(config, |compiler| {
         compiler.enter(|queries| {
-            let lower_to_hir = queries.lower_to_hir()?;
-
-            let mut opts = scrape_test_config(lower_to_hir.peek().0);
-            opts.display_warnings |= options.display_warnings;
-            let enable_per_target_ignores = options.enable_per_target_ignores;
-            let mut collector = Collector::new(
-                queries.crate_name()?.peek().to_string(),
-                options,
-                false,
-                opts,
-                Some(compiler.session().parse_sess.clone_source_map()),
-                None,
-                enable_per_target_ignores,
-            );
+            let _lower_to_hir = queries.lower_to_hir()?;
 
+            let crate_name = queries.crate_name()?.peek().to_string();
             let mut global_ctxt = queries.global_ctxt()?.take();
 
-            global_ctxt.enter(|tcx| {
+            let collector = global_ctxt.enter(|tcx| {
                 let krate = tcx.hir().krate();
+                let crate_attrs = tcx.hir().attrs(CRATE_HIR_ID);
+
+                let mut opts = scrape_test_config(crate_attrs);
+                opts.display_warnings |= options.display_warnings;
+                let enable_per_target_ignores = options.enable_per_target_ignores;
+                let mut collector = Collector::new(
+                    crate_name,
+                    options,
+                    false,
+                    opts,
+                    Some(compiler.session().parse_sess.clone_source_map()),
+                    None,
+                    enable_per_target_ignores,
+                );
 
                 let mut hir_collector = HirCollector {
                     sess: compiler.session(),
@@ -143,6 +145,8 @@
                         intravisit::walk_crate(this, krate);
                     },
                 );
+
+                collector
             });
             compiler.session().abort_if_errors();
 
@@ -167,15 +171,13 @@
 }
 
 // Look for `#![doc(test(no_crate_inject))]`, used by crates in the std facade.
-fn scrape_test_config(krate: &::rustc_hir::Crate<'_>) -> TestOptions {
+fn scrape_test_config(attrs: &[ast::Attribute]) -> TestOptions {
     use rustc_ast_pretty::pprust;
 
     let mut opts =
         TestOptions { no_crate_inject: false, display_warnings: false, attrs: Vec::new() };
 
-    let test_attrs: Vec<_> = krate
-        .item
-        .attrs
+    let test_attrs: Vec<_> = attrs
         .iter()
         .filter(|a| a.has_name(sym::doc))
         .flat_map(|a| a.meta_item_list().unwrap_or_else(Vec::new))

src/tools/clippy/clippy_lints/src/doc.rs

@@ -208,8 +208,9 @@ pub fn new(valid_idents: FxHashSet<String>) -> Self {
 );
 
 impl<'tcx> LateLintPass<'tcx> for DocMarkdown {
-    fn check_crate(&mut self, cx: &LateContext<'tcx>, krate: &'tcx hir::Crate<'_>) {
-        check_attrs(cx, &self.valid_idents, &krate.item.attrs);
+    fn check_crate(&mut self, cx: &LateContext<'tcx>, _: &'tcx hir::Crate<'_>) {
+        let attrs = cx.tcx.hir().attrs(hir::CRATE_HIR_ID);
+        check_attrs(cx, &self.valid_idents, attrs);
     }
 
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'_>) {

src/tools/clippy/clippy_lints/src/loops.rs

@@ -578,7 +578,7 @@ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
             // also check for empty `loop {}` statements, skipping those in #[panic_handler]
             if block.stmts.is_empty() && block.expr.is_none() && !is_in_panic_handler(cx, expr) {
                 let msg = "empty `loop {}` wastes CPU cycles";
-                let help = if is_no_std_crate(cx.tcx.hir().krate()) {
+                let help = if is_no_std_crate(cx) {
                     "you should either use `panic!()` or add a call pausing or sleeping the thread to the loop body"
                 } else {
                     "you should either use `panic!()` or add `std::thread::sleep(..);` to the loop body"

src/tools/clippy/clippy_lints/src/main_recursion.rs

@@ -32,8 +32,8 @@ pub struct MainRecursion {
 impl_lint_pass!(MainRecursion => [MAIN_RECURSION]);
 
 impl LateLintPass<'_> for MainRecursion {
-    fn check_crate(&mut self, _: &LateContext<'_>, krate: &Crate<'_>) {
-        self.has_no_std_attr = is_no_std_crate(krate);
+    fn check_crate(&mut self, cx: &LateContext<'_>, _: &Crate<'_>) {
+        self.has_no_std_attr = is_no_std_crate(cx);
     }
 
     fn check_expr_post(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) {

src/tools/clippy/clippy_lints/src/missing_doc.rs

@@ -127,7 +127,8 @@ fn exit_lint_attrs(&mut self, _: &LateContext<'tcx>, _: &'tcx [ast::Attribute])
     }
 
     fn check_crate(&mut self, cx: &LateContext<'tcx>, krate: &'tcx hir::Crate<'_>) {
-        self.check_missing_docs_attrs(cx, &krate.item.attrs, krate.item.span, "the", "crate");
+        let attrs = cx.tcx.hir().attrs(hir::CRATE_HIR_ID);
+        self.check_missing_docs_attrs(cx, attrs, krate.item.span, "the", "crate");
     }
 
     fn check_item(&mut self, cx: &LateContext<'tcx>, it: &'tcx hir::Item<'_>) {

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

@@ -61,7 +61,7 @@
 use rustc_hir::intravisit::{self, NestedVisitorMap, Visitor};
 use rustc_hir::Node;
 use rustc_hir::{
-    def, Arm, Block, Body, Constness, Crate, Expr, ExprKind, FnDecl, HirId, ImplItem, ImplItemKind, Item, ItemKind,
+    def, Arm, Block, Body, Constness, Expr, ExprKind, FnDecl, HirId, ImplItem, ImplItemKind, Item, ItemKind,
     MatchSource, Param, Pat, PatKind, Path, PathSegment, QPath, TraitItem, TraitItemKind, TraitRef, TyKind, Unsafety,
 };
 use rustc_infer::infer::TyCtxtInferExt;
@@ -1510,8 +1510,8 @@ pub fn is_must_use_func_call(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
     did.map_or(false, |did| must_use_attr(&cx.tcx.get_attrs(did)).is_some())
 }
 
-pub fn is_no_std_crate(krate: &Crate<'_>) -> bool {
-    krate.item.attrs.iter().any(|attr| {
+pub fn is_no_std_crate(cx: &LateContext<'_>) -> bool {
+    cx.tcx.hir().attrs(hir::CRATE_HIR_ID).iter().any(|attr| {
         if let ast::AttrKind::Normal(ref attr, _) = attr.kind {
             attr.path == sym::no_std
         } else {