Auto merge of #72539 - RalfJung:rollup-8yfidi8, r=RalfJung

Rollup of 5 pull requests

Successful merges:

 - #72402 (Remove all uses of `NodeId` in `ResolverOutputs`)
 - #72527 (bootstrap: propagate test-args to miri and clippy test suites)
 - #72530 (Clean up E0602 explanation)
 - #72532 (Use `dyn` trait syntax in more comments and docs)
 - #72535 (Use sort_unstable_by in its own docs)

Failed merges:

r? @ghost

src/bootstrap/test.rs

@@ -439,6 +439,8 @@ impl Step for Miri {
             cargo.env("RUSTC_LIB_PATH", builder.rustc_libdir(compiler));
             cargo.env("MIRI_PATH", miri);
 
+            cargo.arg("--").args(builder.config.cmd.test_args());
+
             builder.add_rustc_lib_path(compiler, &mut cargo);
 
             if !try_run(builder, &mut cargo.into()) {
@@ -545,6 +547,8 @@ impl Step for Clippy {
             // clippy tests need to find the driver
             cargo.env("CLIPPY_DRIVER_PATH", clippy);
 
+            cargo.arg("--").args(builder.config.cmd.test_args());
+
             builder.add_rustc_lib_path(compiler, &mut cargo);
 
             try_run(builder, &mut cargo.into());

src/libcore/raw.rs

@@ -9,15 +9,15 @@
 //! Their definition should always match the ABI defined in
 //! `rustc_middle::ty::layout`.
 
-/// The representation of a trait object like `&SomeTrait`.
+/// The representation of a trait object like `&dyn SomeTrait`.
 ///
-/// This struct has the same layout as types like `&SomeTrait` and
+/// This struct has the same layout as types like `&dyn SomeTrait` and
 /// `Box<dyn AnotherTrait>`.
 ///
 /// `TraitObject` is guaranteed to match layouts, but it is not the
 /// type of trait objects (e.g., the fields are not directly accessible
-/// on a `&SomeTrait`) nor does it control that layout (changing the
+/// on a `&dyn SomeTrait`) nor does it control that layout (changing the
-/// definition will not change the layout of a `&SomeTrait`). It is
+/// definition will not change the layout of a `&dyn SomeTrait`). It is
 /// only designed to be used by unsafe code that needs to manipulate
 /// the low-level details.
 ///

src/libcore/slice/mod.rs

@@ -1654,7 +1654,7 @@ impl<T> [T] {
     ///
     /// ```
     /// let mut floats = [5f64, 4.0, 1.0, 3.0, 2.0];
-    /// floats.sort_by(|a, b| a.partial_cmp(b).unwrap());
+    /// floats.sort_unstable_by(|a, b| a.partial_cmp(b).unwrap());
     /// assert_eq!(floats, [1.0, 2.0, 3.0, 4.0, 5.0]);
     /// ```
     ///

src/librustc_error_codes/error_codes/E0602.md

@@ -1,9 +1,9 @@
 An unknown lint was used on the command line.
 
-Erroneous example:
+Erroneous code example:
 
 ```sh
-rustc -D bogus omse_file.rs
+rustc -D bogus rust_file.rs
 ```
 
 Maybe you just misspelled the lint name or the lint doesn't exist anymore.

src/librustc_hir/definitions.rs

@@ -327,7 +327,9 @@ impl Definitions {
 
     #[inline]
     pub fn local_def_id(&self, node: ast::NodeId) -> LocalDefId {
-        self.opt_local_def_id(node).unwrap()
+        self.opt_local_def_id(node).unwrap_or_else(|| {
+            panic!("no entry for node id: `{:?}` / `{:?}`", node, self.opt_node_id_to_hir_id(node))
+        })
     }
 
     #[inline]

src/librustc_middle/ty/context.rs

@@ -35,7 +35,6 @@ use crate::ty::{InferTy, ParamTy, PolyFnSig, ProjectionTy};
 use crate::ty::{List, TyKind, TyS};
 use rustc_ast::ast;
 use rustc_ast::expand::allocator::AllocatorKind;
-use rustc_ast::node_id::NodeMap;
 use rustc_attr as attr;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_data_structures::profiling::SelfProfilerRef;
@@ -926,7 +925,7 @@ pub struct GlobalCtxt<'tcx> {
     pub consts: CommonConsts<'tcx>,
 
     /// Resolutions of `extern crate` items produced by resolver.
-    extern_crate_map: NodeMap<CrateNum>,
+    extern_crate_map: FxHashMap<DefId, CrateNum>,
 
     /// Map indicating what traits are in scope for places where this
     /// is relevant; generated by resolve.
@@ -1116,13 +1115,8 @@ impl<'tcx> TyCtxt<'tcx> {
         };
 
         let mut trait_map: FxHashMap<_, FxHashMap<_, _>> = FxHashMap::default();
-        for (k, v) in resolutions.trait_map {
+        for (hir_id, v) in resolutions.trait_map.into_iter() {
-            let hir_id = definitions.node_id_to_hir_id(k);
             let map = trait_map.entry(hir_id.owner).or_default();
-            let v = v
-                .into_iter()
-                .map(|tc| tc.map_import_ids(|id| definitions.node_id_to_hir_id(id)))
-                .collect();
             map.insert(hir_id.local_id, StableVec::new(v));
         }
 
@@ -1139,32 +1133,10 @@ impl<'tcx> TyCtxt<'tcx> {
             consts: common_consts,
             extern_crate_map: resolutions.extern_crate_map,
             trait_map,
-            export_map: resolutions
+            export_map: resolutions.export_map,
-                .export_map
+            maybe_unused_trait_imports: resolutions.maybe_unused_trait_imports,
-                .into_iter()
+            maybe_unused_extern_crates: resolutions.maybe_unused_extern_crates,
-                .map(|(k, v)| {
+            glob_map: resolutions.glob_map,
-                    let exports: Vec<_> = v
-                        .into_iter()
-                        .map(|e| e.map_id(|id| definitions.node_id_to_hir_id(id)))
-                        .collect();
-                    (k, exports)
-                })
-                .collect(),
-            maybe_unused_trait_imports: resolutions
-                .maybe_unused_trait_imports
-                .into_iter()
-                .map(|id| definitions.local_def_id(id))
-                .collect(),
-            maybe_unused_extern_crates: resolutions
-                .maybe_unused_extern_crates
-                .into_iter()
-                .map(|(id, sp)| (definitions.local_def_id(id).to_def_id(), sp))
-                .collect(),
-            glob_map: resolutions
-                .glob_map
-                .into_iter()
-                .map(|(id, names)| (definitions.local_def_id(id), names))
-                .collect(),
             extern_prelude: resolutions.extern_prelude,
             untracked_crate: krate,
             definitions,
@@ -2729,10 +2701,7 @@ pub fn provide(providers: &mut ty::query::Providers<'_>) {
         let id = tcx.hir().local_def_id_to_hir_id(id.expect_local());
         tcx.stability().local_deprecation_entry(id)
     };
-    providers.extern_mod_stmt_cnum = |tcx, id| {
+    providers.extern_mod_stmt_cnum = |tcx, id| tcx.extern_crate_map.get(&id).cloned();
-        let id = tcx.hir().as_local_node_id(id).unwrap();
-        tcx.extern_crate_map.get(&id).cloned()
-    };
     providers.all_crate_nums = |tcx, cnum| {
         assert_eq!(cnum, LOCAL_CRATE);
         tcx.arena.alloc_slice(&tcx.cstore.crates_untracked())

src/librustc_middle/ty/mod.rs

@@ -17,11 +17,11 @@ use crate::ty;
 use crate::ty::subst::{InternalSubsts, Subst, SubstsRef};
 use crate::ty::util::{Discr, IntTypeExt};
 use rustc_ast::ast;
-use rustc_ast::node_id::{NodeId, NodeMap, NodeSet};
 use rustc_attr as attr;
 use rustc_data_structures::captures::Captures;
 use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::fx::FxHashMap;
+use rustc_data_structures::fx::FxHashSet;
 use rustc_data_structures::fx::FxIndexMap;
 use rustc_data_structures::sorted_map::SortedIndexMultiMap;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
@@ -31,7 +31,7 @@ use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, CtorOf, DefKind, Namespace, Res};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LocalDefId, CRATE_DEF_INDEX};
 use rustc_hir::lang_items::{FnMutTraitLangItem, FnOnceTraitLangItem, FnTraitLangItem};
-use rustc_hir::{Constness, GlobMap, Node, TraitMap};
+use rustc_hir::{Constness, Node};
 use rustc_index::vec::{Idx, IndexVec};
 use rustc_macros::HashStable;
 use rustc_serialize::{self, Encodable, Encoder};
@@ -120,12 +120,12 @@ mod sty;
 pub struct ResolverOutputs {
     pub definitions: rustc_hir::definitions::Definitions,
     pub cstore: Box<CrateStoreDyn>,
-    pub extern_crate_map: NodeMap<CrateNum>,
+    pub extern_crate_map: FxHashMap<DefId, CrateNum>,
-    pub trait_map: TraitMap<NodeId>,
+    pub trait_map: FxHashMap<hir::HirId, Vec<hir::TraitCandidate<hir::HirId>>>,
-    pub maybe_unused_trait_imports: NodeSet,
+    pub maybe_unused_trait_imports: FxHashSet<LocalDefId>,
-    pub maybe_unused_extern_crates: Vec<(NodeId, Span)>,
+    pub maybe_unused_extern_crates: Vec<(DefId, Span)>,
-    pub export_map: ExportMap<NodeId>,
+    pub export_map: ExportMap<hir::HirId>,
-    pub glob_map: GlobMap,
+    pub glob_map: FxHashMap<LocalDefId, FxHashSet<Symbol>>,
     /// Extern prelude entries. The value is `true` if the entry was introduced
     /// via `extern crate` item and not `--extern` option or compiler built-in.
     pub extern_prelude: FxHashMap<Symbol, bool>,

src/librustc_resolve/lib.rs

@@ -1,3 +1,5 @@
+// ignore-tidy-filelength
+
 //! This crate is responsible for the part of name resolution that doesn't require type checker.
 //!
 //! Module structure of the crate is built here.
@@ -1266,15 +1268,60 @@ impl<'a> Resolver<'a> {
     }
 
     pub fn into_outputs(self) -> ResolverOutputs {
+        let definitions = self.definitions;
+        let extern_crate_map = self
+            .extern_crate_map
+            .into_iter()
+            .map(|(k, v)| (definitions.local_def_id(k).to_def_id(), v))
+            .collect();
+        let export_map = self
+            .export_map
+            .into_iter()
+            .map(|(k, v)| {
+                (
+                    k,
+                    v.into_iter()
+                        .map(|e| e.map_id(|id| definitions.node_id_to_hir_id(id)))
+                        .collect(),
+                )
+            })
+            .collect();
+        let trait_map = self
+            .trait_map
+            .into_iter()
+            .map(|(k, v)| {
+                (
+                    definitions.node_id_to_hir_id(k),
+                    v.into_iter()
+                        .map(|tc| tc.map_import_ids(|id| definitions.node_id_to_hir_id(id)))
+                        .collect(),
+                )
+            })
+            .collect();
+        let maybe_unused_trait_imports = self
+            .maybe_unused_trait_imports
+            .into_iter()
+            .map(|id| definitions.local_def_id(id))
+            .collect();
+        let maybe_unused_extern_crates = self
+            .maybe_unused_extern_crates
+            .into_iter()
+            .map(|(id, sp)| (definitions.local_def_id(id).to_def_id(), sp))
+            .collect();
+        let glob_map = self
+            .glob_map
+            .into_iter()
+            .map(|(id, names)| (definitions.local_def_id(id), names))
+            .collect();
         ResolverOutputs {
-            definitions: self.definitions,
+            definitions: definitions,
             cstore: Box::new(self.crate_loader.into_cstore()),
-            extern_crate_map: self.extern_crate_map,
+            extern_crate_map,
-            export_map: self.export_map,
+            export_map,
-            trait_map: self.trait_map,
+            trait_map,
-            glob_map: self.glob_map,
+            glob_map,
-            maybe_unused_trait_imports: self.maybe_unused_trait_imports,
+            maybe_unused_trait_imports,
-            maybe_unused_extern_crates: self.maybe_unused_extern_crates,
+            maybe_unused_extern_crates,
             extern_prelude: self
                 .extern_prelude
                 .iter()
@@ -1287,12 +1334,53 @@ impl<'a> Resolver<'a> {
         ResolverOutputs {
             definitions: self.definitions.clone(),
             cstore: Box::new(self.cstore().clone()),
-            extern_crate_map: self.extern_crate_map.clone(),
+            extern_crate_map: self
-            export_map: self.export_map.clone(),
+                .extern_crate_map
-            trait_map: self.trait_map.clone(),
+                .iter()
-            glob_map: self.glob_map.clone(),
+                .map(|(&k, &v)| (self.definitions.local_def_id(k).to_def_id(), v))
-            maybe_unused_trait_imports: self.maybe_unused_trait_imports.clone(),
+                .collect(),
-            maybe_unused_extern_crates: self.maybe_unused_extern_crates.clone(),
+            export_map: self
+                .export_map
+                .iter()
+                .map(|(&k, v)| {
+                    (
+                        k,
+                        v.iter()
+                            .map(|e| e.map_id(|id| self.definitions.node_id_to_hir_id(id)))
+                            .collect(),
+                    )
+                })
+                .collect(),
+            trait_map: self
+                .trait_map
+                .iter()
+                .map(|(&k, v)| {
+                    (
+                        self.definitions.node_id_to_hir_id(k),
+                        v.iter()
+                            .cloned()
+                            .map(|tc| {
+                                tc.map_import_ids(|id| self.definitions.node_id_to_hir_id(id))
+                            })
+                            .collect(),
+                    )
+                })
+                .collect(),
+            glob_map: self
+                .glob_map
+                .iter()
+                .map(|(&id, names)| (self.definitions.local_def_id(id), names.clone()))
+                .collect(),
+            maybe_unused_trait_imports: self
+                .maybe_unused_trait_imports
+                .iter()
+                .map(|&id| self.definitions.local_def_id(id))
+                .collect(),
+            maybe_unused_extern_crates: self
+                .maybe_unused_extern_crates
+                .iter()
+                .map(|&(id, sp)| (self.definitions.local_def_id(id).to_def_id(), sp))
+                .collect(),
             extern_prelude: self
                 .extern_prelude
                 .iter()