Rollup merge of #97415 - cjgillot:is-late-bound-solo, r=estebank

Compute `is_late_bound_map` query separately from lifetime resolution

This query is actually very simple, and is only useful for functions and method.  It can be computed directly by fetching the HIR, with no need to embed it within the lifetime resolution visitor.

Based on https://github.com/rust-lang/rust/pull/96296

compiler/rustc_typeck/src/collect.rs

@@ -1364,7 +1364,6 @@ fn has_late_bound_regions<'tcx>(tcx: TyCtxt<'tcx>, node: Node<'tcx>) -> Option<S
 
     fn has_late_bound_regions<'tcx>(
         tcx: TyCtxt<'tcx>,
-        def_id: LocalDefId,
         generics: &'tcx hir::Generics<'tcx>,
         decl: &'tcx hir::FnDecl<'tcx>,
     ) -> Option<Span> {
@@ -1373,14 +1372,9 @@ fn has_late_bound_regions<'tcx>(tcx: TyCtxt<'tcx>, node: Node<'tcx>) -> Option<S
             outer_index: ty::INNERMOST,
             has_late_bound_regions: None,
         };
-        let late_bound_map = tcx.is_late_bound_map(def_id);
-        let is_late_bound = |id| {
-            let id = tcx.hir().local_def_id(id);
-            late_bound_map.map_or(false, |(_, set)| set.contains(&id))
-        };
         for param in generics.params {
             if let GenericParamKind::Lifetime { .. } = param.kind {
-                if is_late_bound(param.hir_id) {
+                if tcx.is_late_bound(param.hir_id) {
                     return Some(param.span);
                 }
             }
@@ -1392,25 +1386,25 @@ fn has_late_bound_regions<'tcx>(tcx: TyCtxt<'tcx>, node: Node<'tcx>) -> Option<S
     match node {
         Node::TraitItem(item) => match item.kind {
             hir::TraitItemKind::Fn(ref sig, _) => {
-                has_late_bound_regions(tcx, item.def_id, &item.generics, sig.decl)
+                has_late_bound_regions(tcx, &item.generics, sig.decl)
             }
             _ => None,
         },
         Node::ImplItem(item) => match item.kind {
             hir::ImplItemKind::Fn(ref sig, _) => {
-                has_late_bound_regions(tcx, item.def_id, &item.generics, sig.decl)
+                has_late_bound_regions(tcx, &item.generics, sig.decl)
             }
             _ => None,
         },
         Node::ForeignItem(item) => match item.kind {
             hir::ForeignItemKind::Fn(fn_decl, _, ref generics) => {
-                has_late_bound_regions(tcx, item.def_id, generics, fn_decl)
+                has_late_bound_regions(tcx, generics, fn_decl)
             }
             _ => None,
         },
         Node::Item(item) => match item.kind {
             hir::ItemKind::Fn(ref sig, .., ref generics, _) => {
-                has_late_bound_regions(tcx, item.def_id, generics, sig.decl)
+                has_late_bound_regions(tcx, generics, sig.decl)
             }
             _ => None,
         },
@@ -1671,7 +1665,7 @@ fn generics_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::Generics {
         params.push(opt_self);
     }
 
-    let early_lifetimes = early_bound_lifetimes_from_generics(tcx, hir_id.owner, ast_generics);
+    let early_lifetimes = early_bound_lifetimes_from_generics(tcx, ast_generics);
     params.extend(early_lifetimes.enumerate().map(|(i, param)| ty::GenericParamDef {
         name: param.name.ident().name,
         index: own_start + i as u32,
@@ -2054,23 +2048,10 @@ fn impl_polarity(tcx: TyCtxt<'_>, def_id: DefId) -> ty::ImplPolarity {
 /// `resolve_lifetime::early_bound_lifetimes`.
 fn early_bound_lifetimes_from_generics<'a, 'tcx: 'a>(
     tcx: TyCtxt<'tcx>,
-    def_id: LocalDefId,
     generics: &'a hir::Generics<'a>,
 ) -> impl Iterator<Item = &'a hir::GenericParam<'a>> + Captures<'tcx> {
-    let late_bound_map = if generics.params.is_empty() {
-        // This function may be called on `def_id == CRATE_DEF_ID`,
-        // which makes `is_late_bound_map` ICE.  Don't even try if there
-        // is no generic parameter.
-        None
-    } else {
-        tcx.is_late_bound_map(def_id)
-    };
-    let is_late_bound = move |hir_id| {
-        let id = tcx.hir().local_def_id(hir_id);
-        late_bound_map.map_or(false, |(_, set)| set.contains(&id))
-    };
     generics.params.iter().filter(move |param| match param.kind {
-        GenericParamKind::Lifetime { .. } => !is_late_bound(param.hir_id),
+        GenericParamKind::Lifetime { .. } => !tcx.is_late_bound(param.hir_id),
         _ => false,
     })
 }
@@ -2255,7 +2236,7 @@ fn gather_explicit_predicates_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::GenericP
     // have to be careful to only iterate over early-bound regions.
     let mut index = parent_count
         + has_own_self as u32
-        + early_bound_lifetimes_from_generics(tcx, hir_id.owner, ast_generics).count() as u32;
+        + early_bound_lifetimes_from_generics(tcx, ast_generics).count() as u32;
 
     // Collect the predicates that were written inline by the user on each
     // type parameter (e.g., `<T: Foo>`).

compiler/rustc_typeck/src/structured_errors/wrong_number_of_generic_args.rs

@@ -514,7 +514,9 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
                             param_names
                                 .iter()
                                 .take(num_params_to_take)
-                                .map(|p| p.as_str())
+                                .map(|def_id| {
+                                    self.tcx.item_name(def_id.to_def_id()).to_ident_string()
+                                })
                                 .collect::<Vec<_>>()
                                 .join(", ")
                         } else {