Auto merge of #11694 - flip1995:rustup, r=flip1995

Rustup

r? `@ghost`

changelog: none

clippy_lints/src/async_yields_async.rs

@@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_hir_and_then;
 use clippy_utils::source::snippet;
 use clippy_utils::ty::implements_trait;
 use rustc_errors::Applicability;
-use rustc_hir::{AsyncGeneratorKind, Body, BodyId, ExprKind, GeneratorKind, QPath};
+use rustc_hir::{AsyncCoroutineKind, Body, BodyId, CoroutineKind, ExprKind, QPath};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 
@@ -45,10 +45,10 @@ declare_lint_pass!(AsyncYieldsAsync => [ASYNC_YIELDS_ASYNC]);
 
 impl<'tcx> LateLintPass<'tcx> for AsyncYieldsAsync {
     fn check_body(&mut self, cx: &LateContext<'tcx>, body: &'tcx Body<'_>) {
-        use AsyncGeneratorKind::{Block, Closure};
+        use AsyncCoroutineKind::{Block, Closure};
         // For functions, with explicitly defined types, don't warn.
         // XXXkhuey maybe we should?
-        if let Some(GeneratorKind::Async(Block | Closure)) = body.generator_kind {
+        if let Some(CoroutineKind::Async(Block | Closure)) = body.coroutine_kind {
             if let Some(future_trait_def_id) = cx.tcx.lang_items().future_trait() {
                 let body_id = BodyId {
                     hir_id: body.value.hir_id,

clippy_lints/src/attrs.rs

@@ -183,7 +183,7 @@ declare_clippy_lint! {
 
 declare_clippy_lint! {
     /// ### What it does
-    /// Checks for empty lines after documenation comments.
+    /// Checks for empty lines after documentation comments.
     ///
     /// ### Why is this bad?
     /// The documentation comment was most likely meant to be an inner attribute or regular comment.
@@ -795,7 +795,7 @@ impl EarlyLintPass for EarlyAttributes {
 
 /// Check for empty lines after outer attributes.
 ///
-/// Attributes and documenation comments are both considered outer attributes
+/// Attributes and documentation comments are both considered outer attributes
 /// by the AST. However, the average user likely considers them to be different.
 /// Checking for empty lines after each of these attributes is split into two different
 /// lints but can share the same logic.

clippy_lints/src/await_holding_invalid.rs

@@ -2,9 +2,9 @@ use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::{match_def_path, paths};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_hir::def_id::DefId;
-use rustc_hir::{AsyncGeneratorKind, Body, GeneratorKind};
+use rustc_hir::{AsyncCoroutineKind, Body, CoroutineKind};
 use rustc_lint::{LateContext, LateLintPass};
-use rustc_middle::mir::GeneratorLayout;
+use rustc_middle::mir::CoroutineLayout;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::{sym, Span};
 
@@ -195,26 +195,26 @@ impl LateLintPass<'_> for AwaitHolding {
     }
 
     fn check_body(&mut self, cx: &LateContext<'_>, body: &'_ Body<'_>) {
-        use AsyncGeneratorKind::{Block, Closure, Fn};
+        use AsyncCoroutineKind::{Block, Closure, Fn};
-        if let Some(GeneratorKind::Async(Block | Closure | Fn)) = body.generator_kind {
+        if let Some(CoroutineKind::Async(Block | Closure | Fn)) = body.coroutine_kind {
             let def_id = cx.tcx.hir().body_owner_def_id(body.id());
-            if let Some(generator_layout) = cx.tcx.mir_generator_witnesses(def_id) {
+            if let Some(coroutine_layout) = cx.tcx.mir_coroutine_witnesses(def_id) {
-                self.check_interior_types(cx, generator_layout);
+                self.check_interior_types(cx, coroutine_layout);
             }
         }
     }
 }
 
 impl AwaitHolding {
-    fn check_interior_types(&self, cx: &LateContext<'_>, generator: &GeneratorLayout<'_>) {
+    fn check_interior_types(&self, cx: &LateContext<'_>, coroutine: &CoroutineLayout<'_>) {
-        for (ty_index, ty_cause) in generator.field_tys.iter_enumerated() {
+        for (ty_index, ty_cause) in coroutine.field_tys.iter_enumerated() {
             if let rustc_middle::ty::Adt(adt, _) = ty_cause.ty.kind() {
                 let await_points = || {
-                    generator
+                    coroutine
                         .variant_source_info
                         .iter_enumerated()
                         .filter_map(|(variant, source_info)| {
-                            generator.variant_fields[variant]
+                            coroutine.variant_fields[variant]
                                 .raw
                                 .contains(&ty_index)
                                 .then_some(source_info.span)
@@ -287,5 +287,8 @@ fn is_mutex_guard(cx: &LateContext<'_>, def_id: DefId) -> bool {
 }
 
 fn is_refcell_ref(cx: &LateContext<'_>, def_id: DefId) -> bool {
-    match_def_path(cx, def_id, &paths::REFCELL_REF) || match_def_path(cx, def_id, &paths::REFCELL_REFMUT)
+    matches!(
+        cx.tcx.get_diagnostic_name(def_id),
+        Some(sym::RefCellRef | sym::RefCellRefMut)
+    )
 }

clippy_lints/src/box_default.rs

@@ -1,8 +1,9 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::macros::macro_backtrace;
 use clippy_utils::ty::expr_sig;
-use clippy_utils::{get_parent_node, is_default_equivalent, match_path, path_def_id, paths};
+use clippy_utils::{get_parent_node, is_default_equivalent, path_def_id};
 use rustc_errors::Applicability;
+use rustc_hir::def::Res;
 use rustc_hir::intravisit::{walk_ty, Visitor};
 use rustc_hir::{Block, Expr, ExprKind, Local, Node, QPath, TyKind};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
@@ -55,7 +56,7 @@ impl LateLintPass<'_> for BoxDefault {
                 expr.span,
                 "`Box::new(_)` of default value",
                 "try",
-                if is_plain_default(arg_path) || given_type(cx, expr) {
+                if is_plain_default(cx, arg_path) || given_type(cx, expr) {
                     "Box::default()".into()
                 } else if let Some(arg_ty) = cx.typeck_results().expr_ty(arg).make_suggestable(cx.tcx, true) {
                     with_forced_trimmed_paths!(format!("Box::<{arg_ty}>::default()"))
@@ -68,11 +69,13 @@ impl LateLintPass<'_> for BoxDefault {
     }
 }
 
-fn is_plain_default(arg_path: &Expr<'_>) -> bool {
+fn is_plain_default(cx: &LateContext<'_>, arg_path: &Expr<'_>) -> bool {
     // we need to match the actual path so we don't match e.g. "u8::default"
-    if let ExprKind::Path(QPath::Resolved(None, path)) = &arg_path.kind {
+    if let ExprKind::Path(QPath::Resolved(None, path)) = &arg_path.kind
+        && let Res::Def(_, def_id) = path.res
+    {
         // avoid generic parameters
-        match_path(path, &paths::DEFAULT_TRAIT_METHOD) && path.segments.iter().all(|seg| seg.args.is_none())
+        cx.tcx.is_diagnostic_item(sym::default_fn, def_id) && path.segments.iter().all(|seg| seg.args.is_none())
     } else {
         false
     }

clippy_lints/src/casts/cast_ptr_alignment.rs

@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint;
 use clippy_utils::ty::is_c_void;
-use clippy_utils::{get_parent_expr, is_hir_ty_cfg_dependant, match_any_def_paths, paths};
+use clippy_utils::{get_parent_expr, is_hir_ty_cfg_dependant};
 use rustc_hir::{Expr, ExprKind, GenericArg};
 use rustc_lint::LateContext;
 use rustc_middle::ty::layout::LayoutOf;
@@ -75,16 +75,17 @@ fn is_used_as_unaligned(cx: &LateContext<'_>, e: &Expr<'_>) -> bool {
             }
         },
         ExprKind::Call(func, [arg, ..]) if arg.hir_id == e.hir_id => {
-            static PATHS: &[&[&str]] = &[
-                paths::PTR_READ_UNALIGNED.as_slice(),
-                paths::PTR_UNALIGNED_VOLATILE_LOAD.as_slice(),
-                paths::PTR_UNALIGNED_VOLATILE_STORE.as_slice(),
-            ];
-
             if let ExprKind::Path(path) = &func.kind
                 && let Some(def_id) = cx.qpath_res(path, func.hir_id).opt_def_id()
-                && (match_any_def_paths(cx, def_id, PATHS).is_some()
+                && matches!(
-                    || cx.tcx.is_diagnostic_item(sym::ptr_write_unaligned, def_id))
+                    cx.tcx.get_diagnostic_name(def_id),
+                    Some(
+                        sym::ptr_write_unaligned
+                        | sym::ptr_read_unaligned
+                        | sym::intrinsics_unaligned_volatile_load
+                        | sym::intrinsics_unaligned_volatile_store
+                    )
+                )
             {
                 true
             } else {

clippy_lints/src/casts/cast_slice_from_raw_parts.rs

@@ -1,13 +1,13 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::msrvs::{self, Msrv};
 use clippy_utils::source::snippet_with_context;
-use clippy_utils::{match_def_path, paths};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::def_id::DefId;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::LateContext;
 use rustc_middle::ty::{self, Ty};
+use rustc_span::sym;
 
 use super::CAST_SLICE_FROM_RAW_PARTS;
 
@@ -17,12 +17,10 @@ enum RawPartsKind {
 }
 
 fn raw_parts_kind(cx: &LateContext<'_>, did: DefId) -> Option<RawPartsKind> {
-    if match_def_path(cx, did, &paths::SLICE_FROM_RAW_PARTS) {
+    match cx.tcx.get_diagnostic_name(did)? {
-        Some(RawPartsKind::Immutable)
+        sym::slice_from_raw_parts => Some(RawPartsKind::Immutable),
-    } else if match_def_path(cx, did, &paths::SLICE_FROM_RAW_PARTS_MUT) {
+        sym::slice_from_raw_parts_mut => Some(RawPartsKind::Mutable),
-        Some(RawPartsKind::Mutable)
+        _ => None,
-    } else {
-        None
     }
 }
 

clippy_lints/src/create_dir.rs

@@ -1,11 +1,11 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::source::snippet;
-use clippy_utils::{match_def_path, paths};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -37,7 +37,7 @@ impl LateLintPass<'_> for CreateDir {
             if let ExprKind::Call(func, [arg, ..]) = expr.kind;
             if let ExprKind::Path(ref path) = func.kind;
             if let Some(def_id) = cx.qpath_res(path, func.hir_id).opt_def_id();
-            if match_def_path(cx, def_id, &paths::STD_FS_CREATE_DIR);
+            if cx.tcx.is_diagnostic_item(sym::fs_create_dir, def_id);
             then {
                 span_lint_and_sugg(
                     cx,

clippy_lints/src/default.rs

@@ -1,9 +1,7 @@
 use clippy_utils::diagnostics::{span_lint_and_note, span_lint_and_sugg};
 use clippy_utils::source::snippet_with_context;
 use clippy_utils::ty::{has_drop, is_copy};
-use clippy_utils::{
+use clippy_utils::{any_parent_is_automatically_derived, contains_name, get_parent_expr, is_from_proc_macro};
-    any_parent_is_automatically_derived, contains_name, get_parent_expr, is_from_proc_macro, match_def_path, paths,
-};
 use if_chain::if_chain;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::Applicability;
@@ -14,7 +12,7 @@ use rustc_middle::ty;
 use rustc_middle::ty::print::with_forced_trimmed_paths;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::symbol::{Ident, Symbol};
-use rustc_span::Span;
+use rustc_span::{sym, Span};
 
 declare_clippy_lint! {
     /// ### What it does
@@ -91,7 +89,7 @@ impl<'tcx> LateLintPass<'tcx> for Default {
             if !any_parent_is_automatically_derived(cx.tcx, expr.hir_id);
             if let ExprKind::Path(ref qpath) = path.kind;
             if let Some(def_id) = cx.qpath_res(qpath, path.hir_id).opt_def_id();
-            if match_def_path(cx, def_id, &paths::DEFAULT_TRAIT_METHOD);
+            if cx.tcx.is_diagnostic_item(sym::default_fn, def_id);
             if !is_update_syntax_base(cx, expr);
             // Detect and ignore <Foo as Default>::default() because these calls do explicitly name the type.
             if let QPath::Resolved(None, _path) = qpath;
@@ -268,7 +266,7 @@ fn is_expr_default<'tcx>(expr: &'tcx Expr<'tcx>, cx: &LateContext<'tcx>) -> bool
         if let Res::Def(_, def_id) = cx.qpath_res(qpath, fn_expr.hir_id);
         then {
             // right hand side of assignment is `Default::default`
-            match_def_path(cx, def_id, &paths::DEFAULT_TRAIT_METHOD)
+            cx.tcx.is_diagnostic_item(sym::default_fn, def_id)
         } else {
             false
         }

clippy_lints/src/default_constructed_unit_structs.rs

@@ -1,5 +1,5 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
-use clippy_utils::{is_ty_alias, match_def_path, paths};
+use clippy_utils::is_ty_alias;
 use hir::def::Res;
 use hir::ExprKind;
 use rustc_errors::Applicability;
@@ -7,6 +7,7 @@ use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -63,7 +64,7 @@ impl LateLintPass<'_> for DefaultConstructedUnitStructs {
             // `<Foo as Bar>::Assoc` cannot be used as a constructor
             if !is_alias(*base);
             if let Res::Def(_, def_id) = cx.qpath_res(qpath, fn_expr.hir_id);
-            if match_def_path(cx, def_id, &paths::DEFAULT_TRAIT_METHOD);
+            if cx.tcx.is_diagnostic_item(sym::default_fn, def_id);
             // make sure we have a struct with no fields (unit struct)
             if let ty::Adt(def, ..) = cx.typeck_results().expr_ty(expr).kind();
             if def.is_struct();

clippy_lints/src/default_instead_of_iter_empty.rs

@@ -1,11 +1,11 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
+use clippy_utils::last_path_segment;
 use clippy_utils::source::snippet_with_context;
-use clippy_utils::{last_path_segment, match_def_path, paths};
 use rustc_errors::Applicability;
 use rustc_hir::{def, Expr, ExprKind, GenericArg, QPath, TyKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::SyntaxContext;
+use rustc_span::{sym, SyntaxContext};
 
 declare_clippy_lint! {
     /// ### What it does
@@ -37,7 +37,7 @@ impl<'tcx> LateLintPass<'tcx> for DefaultIterEmpty {
             && let TyKind::Path(ty_path) = &ty.kind
             && let QPath::Resolved(None, path) = ty_path
             && let def::Res::Def(_, def_id) = &path.res
-            && match_def_path(cx, *def_id, &paths::ITER_EMPTY)
+            && cx.tcx.is_diagnostic_item(sym::IterEmpty, *def_id)
             && let ctxt = expr.span.ctxt()
             && ty.span.ctxt() == ctxt
         {

clippy_lints/src/dereference.rs

@@ -701,7 +701,7 @@ fn deref_method_same_type<'tcx>(result_ty: Ty<'tcx>, arg_ty: Ty<'tcx>) -> bool {
 
 fn in_postfix_position<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'tcx>) -> bool {
     if let Some(parent) = get_parent_expr(cx, e)
-        && parent.span.ctxt() == e.span.ctxt()
+        && parent.span.eq_ctxt(e.span)
     {
         match parent.kind {
             ExprKind::Call(child, _) | ExprKind::MethodCall(_, child, _, _) | ExprKind::Index(child, _, _)
@@ -842,8 +842,8 @@ impl TyCoercionStability {
                 | ty::Adt(..)
                 | ty::Foreign(_)
                 | ty::FnDef(..)
-                | ty::Generator(..)
+                | ty::Coroutine(..)
-                | ty::GeneratorWitness(..)
+                | ty::CoroutineWitness(..)
                 | ty::Closure(..)
                 | ty::Never
                 | ty::Tuple(_)

clippy_lints/src/doc.rs

@@ -436,8 +436,8 @@ fn lint_for_missing_headers(
                 let body = cx.tcx.hir().body(body_id);
                 let ret_ty = typeck.expr_ty(body.value);
                 if implements_trait(cx, ret_ty, future, &[]);
-                if let ty::Generator(_, subs, _) = ret_ty.kind();
+                if let ty::Coroutine(_, subs, _) = ret_ty.kind();
-                if is_type_diagnostic_item(cx, subs.as_generator().return_ty(), sym::Result);
+                if is_type_diagnostic_item(cx, subs.as_coroutine().return_ty(), sym::Result);
                 then {
                     span_lint(
                         cx,

clippy_lints/src/entry.rs

@@ -241,7 +241,7 @@ fn try_parse_contains<'tcx>(cx: &LateContext<'_>, expr: &'tcx Expr<'_>) -> Optio
                 },
             ],
             _,
-        ) if key_span.ctxt() == expr.span.ctxt() => {
+        ) if key_span.eq_ctxt(expr.span) => {
             let id = cx.typeck_results().type_dependent_def_id(expr.hir_id)?;
             let expr = ContainsExpr {
                 negated,

clippy_lints/src/exit.rs

@@ -1,9 +1,10 @@
 use clippy_utils::diagnostics::span_lint;
-use clippy_utils::{is_entrypoint_fn, match_def_path, paths};
+use clippy_utils::is_entrypoint_fn;
 use if_chain::if_chain;
 use rustc_hir::{Expr, ExprKind, Item, ItemKind, Node};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -45,7 +46,7 @@ impl<'tcx> LateLintPass<'tcx> for Exit {
             if let ExprKind::Call(path_expr, _args) = e.kind;
             if let ExprKind::Path(ref path) = path_expr.kind;
             if let Some(def_id) = cx.qpath_res(path, path_expr.hir_id).opt_def_id();
-            if match_def_path(cx, def_id, &paths::EXIT);
+            if cx.tcx.is_diagnostic_item(sym::process_exit, def_id);
             let parent = cx.tcx.hir().get_parent_item(e.hir_id).def_id;
             if let Some(Node::Item(Item{kind: ItemKind::Fn(..), ..})) = cx.tcx.hir().find_by_def_id(parent);
             // If the next item up is a function we check if it is an entry point

clippy_lints/src/explicit_write.rs

@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::macros::{find_format_args, format_args_inputs_span};
 use clippy_utils::source::snippet_with_applicability;
-use clippy_utils::{is_expn_of, match_function_call, paths};
+use clippy_utils::{is_expn_of, path_def_id};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::def::Res;
@@ -47,18 +47,19 @@ impl<'tcx> LateLintPass<'tcx> for ExplicitWrite {
         if let ExprKind::MethodCall(unwrap_fun, write_call, [], _) = expr.kind
             && unwrap_fun.ident.name == sym::unwrap
             // match call to write_fmt
-            && let ExprKind::MethodCall(write_fun, write_recv, [write_arg], _) = look_in_block(cx, &write_call.kind)
+            && let ExprKind::MethodCall(write_fun, write_recv, [write_arg], _) = *look_in_block(cx, &write_call.kind)
+            && let ExprKind::Call(write_recv_path, _) = write_recv.kind
             && write_fun.ident.name == sym!(write_fmt)
-            // match calls to std::io::stdout() / std::io::stderr ()
+            && let Some(def_id) = path_def_id(cx, write_recv_path)
-            && let Some(dest_name) = if match_function_call(cx, write_recv, &paths::STDOUT).is_some() {
-                Some("stdout")
-            } else if match_function_call(cx, write_recv, &paths::STDERR).is_some() {
-                Some("stderr")
-            } else {
-                None
-            }
-            && let Some(format_args) = find_format_args(cx, write_arg, ExpnId::root())
         {
+            // match calls to std::io::stdout() / std::io::stderr ()
+            let (dest_name, prefix) = match cx.tcx.get_diagnostic_name(def_id) {
+                Some(sym::io_stdout) => ("stdout", ""),
+                Some(sym::io_stderr) => ("stderr", "e"),
+                _ => return,
+            };
+            let Some(format_args) = find_format_args(cx, write_arg, ExpnId::root()) else { return; };
+
             // ordering is important here, since `writeln!` uses `write!` internally
             let calling_macro = if is_expn_of(write_call.span, "writeln").is_some() {
                 Some("writeln")
@@ -67,11 +68,6 @@ impl<'tcx> LateLintPass<'tcx> for ExplicitWrite {
             } else {
                 None
             };
-            let prefix = if dest_name == "stderr" {
-                "e"
-            } else {
-                ""
-            };
 
             // We need to remove the last trailing newline from the string because the
             // underlying `fmt::write` function doesn't know whether `println!` or `print!` was

clippy_lints/src/formatting.rs

@@ -274,7 +274,7 @@ fn check_array(cx: &EarlyContext<'_>, expr: &Expr) {
         for element in array {
             if_chain! {
                 if let ExprKind::Binary(ref op, ref lhs, _) = element.kind;
-                if has_unary_equivalent(op.node) && lhs.span.ctxt() == op.span.ctxt();
+                if has_unary_equivalent(op.node) && lhs.span.eq_ctxt(op.span);
                 let space_span = lhs.span.between(op.span);
                 if let Some(space_snippet) = snippet_opt(cx, space_span);
                 let lint_span = lhs.span.with_lo(lhs.span.hi());

clippy_lints/src/from_raw_with_void_ptr.rs

@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_help;
+use clippy_utils::path_def_id;
 use clippy_utils::ty::is_c_void;
-use clippy_utils::{match_def_path, path_def_id, paths};
 use rustc_hir::def_id::DefId;
 use rustc_hir::{Expr, ExprKind, QPath};
 use rustc_lint::{LateContext, LateLintPass};
@@ -68,7 +68,7 @@ fn def_id_matches_type(cx: &LateContext<'_>, def_id: DefId) -> Option<&'static s
         }
     }
 
-    if match_def_path(cx, def_id, &paths::WEAK_RC) || match_def_path(cx, def_id, &paths::WEAK_ARC) {
+    if matches!(cx.tcx.get_diagnostic_name(def_id), Some(sym::RcWeak | sym::ArcWeak)) {
         Some("Weak")
     } else {
         None

clippy_lints/src/instant_subtraction.rs

@@ -130,11 +130,7 @@ fn is_instant_now_call(cx: &LateContext<'_>, expr_block: &'_ Expr<'_>) -> bool {
 
 fn is_an_instant(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
     let expr_ty = cx.typeck_results().expr_ty(expr);
-
+    ty::is_type_diagnostic_item(cx, expr_ty, sym::Instant)
-    match expr_ty.kind() {
-        rustc_middle::ty::Adt(def, _) => clippy_utils::match_def_path(cx, def.did(), &clippy_utils::paths::INSTANT),
-        _ => false,
-    }
 }
 
 fn is_a_duration(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {

clippy_lints/src/large_futures.rs

@@ -12,7 +12,7 @@ declare_clippy_lint! {
     /// It checks for the size of a `Future` created by `async fn` or `async {}`.
     ///
     /// ### Why is this bad?
-    /// Due to the current [unideal implementation](https://github.com/rust-lang/rust/issues/69826) of `Generator`,
+    /// Due to the current [unideal implementation](https://github.com/rust-lang/rust/issues/69826) of `Coroutine`,
     /// large size of a `Future` may cause stack overflows.
     ///
     /// ### Example

clippy_lints/src/let_with_type_underscore.rs

@@ -31,7 +31,7 @@ impl LateLintPass<'_> for UnderscoreTyped {
             if !in_external_macro(cx.tcx.sess, local.span);
             if let Some(ty) = local.ty; // Ensure that it has a type defined
             if let TyKind::Infer = &ty.kind; // that type is '_'
-            if local.span.ctxt() == ty.span.ctxt();
+            if local.span.eq_ctxt(ty.span);
             then {
                 // NOTE: Using `is_from_proc_macro` on `init` will require that it's initialized,
                 // this doesn't. Alternatively, `WithSearchPat` can be implemented for `Ty`

clippy_lints/src/lines_filter_map_ok.rs

@@ -1,5 +1,5 @@
 use clippy_utils::diagnostics::span_lint_and_then;
-use clippy_utils::ty::match_type;
+use clippy_utils::ty::is_type_diagnostic_item;
 use clippy_utils::{is_diag_item_method, is_trait_method, match_def_path, path_to_local_id, paths};
 use rustc_errors::Applicability;
 use rustc_hir::{Body, Closure, Expr, ExprKind};
@@ -62,7 +62,7 @@ impl LateLintPass<'_> for LinesFilterMapOk {
         if let ExprKind::MethodCall(fm_method, fm_receiver, [fm_arg], fm_span) = expr.kind &&
             is_trait_method(cx, expr, sym::Iterator) &&
             (fm_method.ident.as_str() == "filter_map" || fm_method.ident.as_str() == "flat_map") &&
-            match_type(cx, cx.typeck_results().expr_ty_adjusted(fm_receiver), &paths::STD_IO_LINES)
+            is_type_diagnostic_item(cx, cx.typeck_results().expr_ty_adjusted(fm_receiver), sym::IoLines)
         {
             let lint = match &fm_arg.kind {
                 // Detect `Result::ok`

clippy_lints/src/manual_async_fn.rs

@@ -4,7 +4,7 @@ use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::intravisit::FnKind;
 use rustc_hir::{
-    AsyncGeneratorKind, Block, Body, Closure, Expr, ExprKind, FnDecl, FnRetTy, GeneratorKind, GenericArg, GenericBound,
+    AsyncCoroutineKind, Block, Body, Closure, CoroutineKind, Expr, ExprKind, FnDecl, FnRetTy, GenericArg, GenericBound,
     ImplItem, Item, ItemKind, LifetimeName, Node, Term, TraitRef, Ty, TyKind, TypeBindingKind,
 };
 use rustc_lint::{LateContext, LateLintPass};
@@ -188,7 +188,7 @@ fn desugared_async_block<'tcx>(cx: &LateContext<'tcx>, block: &'tcx Block<'tcx>)
             ..
         } = block_expr;
         let closure_body = cx.tcx.hir().body(body);
-        if closure_body.generator_kind == Some(GeneratorKind::Async(AsyncGeneratorKind::Block));
+        if closure_body.coroutine_kind == Some(CoroutineKind::Async(AsyncCoroutineKind::Block));
         then {
             return Some(closure_body);
         }

clippy_lints/src/manual_float_methods.rs

@@ -85,7 +85,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualFloatMethods {
         if !in_external_macro(cx.sess(), expr.span)
             && (
                 matches!(cx.tcx.constness(cx.tcx.hir().enclosing_body_owner(expr.hir_id)), Constness::NotConst)
-                    || cx.tcx.features().active(sym!(const_float_classify))
+                    || cx.tcx.features().declared(sym!(const_float_classify))
             ) && let ExprKind::Binary(kind, lhs, rhs) = expr.kind
             && let ExprKind::Binary(lhs_kind, lhs_lhs, lhs_rhs) = lhs.kind
             && let ExprKind::Binary(rhs_kind, rhs_lhs, rhs_rhs) = rhs.kind

clippy_lints/src/manual_let_else.rs

@@ -59,7 +59,7 @@ impl<'tcx> QuestionMark {
             let Some(init) = local.init &&
             local.els.is_none() &&
             local.ty.is_none() &&
-            init.span.ctxt() == stmt.span.ctxt() &&
+            init.span.eq_ctxt(stmt.span) &&
             let Some(if_let_or_match) = IfLetOrMatch::parse(cx, init)
         {
             match if_let_or_match {

clippy_lints/src/manual_retain.rs

@@ -135,7 +135,7 @@ fn check_to_owned(
     if msrv.meets(msrvs::STRING_RETAIN)
         && let hir::ExprKind::MethodCall(_, filter_expr, [], _) = &target_expr.kind
         && let Some(to_owned_def_id) = cx.typeck_results().type_dependent_def_id(target_expr.hir_id)
-        && match_def_path(cx, to_owned_def_id, &paths::TO_OWNED_METHOD)
+        && cx.tcx.is_diagnostic_item(sym::to_owned_method, to_owned_def_id)
         && let hir::ExprKind::MethodCall(_, chars_expr, [_], _) = &filter_expr.kind
         && let Some(filter_def_id) = cx.typeck_results().type_dependent_def_id(filter_expr.hir_id)
         && match_def_path(cx, filter_def_id, &paths::CORE_ITER_FILTER)

clippy_lints/src/matches/collapsible_match.rs

@@ -57,7 +57,7 @@ fn check_arm<'tcx>(
                 }
             },
         };
-        if outer_pat.span.ctxt() == inner_scrutinee.span.ctxt();
+        if outer_pat.span.eq_ctxt(inner_scrutinee.span);
         // match expression must be a local binding
         // match <local> { .. }
         if let Some(binding_id) = path_to_local(peel_ref_operators(cx, inner_scrutinee));

clippy_lints/src/matches/manual_utils.rs

@@ -119,7 +119,7 @@ where
     // it's being passed by value.
     let scrutinee = peel_hir_expr_refs(scrutinee).0;
     let (scrutinee_str, _) = snippet_with_context(cx, scrutinee.span, expr_ctxt, "..", &mut app);
-    let scrutinee_str = if scrutinee.span.ctxt() == expr.span.ctxt() && scrutinee.precedence().order() < PREC_POSTFIX {
+    let scrutinee_str = if scrutinee.span.eq_ctxt(expr.span) && scrutinee.precedence().order() < PREC_POSTFIX {
         format!("({scrutinee_str})")
     } else {
         scrutinee_str.into()
@@ -130,7 +130,7 @@ where
         if_chain! {
             if !some_expr.needs_unsafe_block;
             if let Some(func) = can_pass_as_func(cx, id, some_expr.expr);
-            if func.span.ctxt() == some_expr.expr.span.ctxt();
+            if func.span.eq_ctxt(some_expr.expr.span);
             then {
                 snippet_with_applicability(cx, func.span, "..", &mut app).into_owned()
             } else {

clippy_lints/src/matches/match_wild_err_arm.rs

@@ -19,7 +19,7 @@ pub(crate) fn check<'tcx>(cx: &LateContext<'tcx>, ex: &Expr<'tcx>, arms: &[Arm<'
     if is_type_diagnostic_item(cx, ex_ty, sym::Result) {
         for arm in arms {
             if let PatKind::TupleStruct(ref path, inner, _) = arm.pat.kind {
-                let path_str = rustc_hir_pretty::to_string(rustc_hir_pretty::NO_ANN, |s| s.print_qpath(path, false));
+                let path_str = rustc_hir_pretty::qpath_to_string(path);
                 if path_str == "Err" {
                     let mut matching_wild = inner.iter().any(is_wild);
                     let mut ident_bind_name = kw::Underscore;

clippy_lints/src/methods/bytecount.rs

@@ -1,8 +1,8 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::source::snippet_with_applicability;
-use clippy_utils::ty::match_type;
+use clippy_utils::ty::is_type_diagnostic_item;
 use clippy_utils::visitors::is_local_used;
-use clippy_utils::{path_to_local_id, paths, peel_blocks, peel_ref_operators, strip_pat_refs};
+use clippy_utils::{path_to_local_id, peel_blocks, peel_ref_operators, strip_pat_refs};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::{BinOpKind, Closure, Expr, ExprKind, PatKind};
@@ -25,9 +25,9 @@ pub(super) fn check<'tcx>(
         if let PatKind::Binding(_, arg_id, _, _) = strip_pat_refs(param.pat).kind;
         if let ExprKind::Binary(ref op, l, r) = body.value.kind;
         if op.node == BinOpKind::Eq;
-        if match_type(cx,
+        if is_type_diagnostic_item(cx,
                     cx.typeck_results().expr_ty(filter_recv).peel_refs(),
-                    &paths::SLICE_ITER);
+                    sym::SliceIter);
         let operand_is_arg = |expr| {
             let expr = peel_ref_operators(cx, peel_blocks(expr));
             path_to_local_id(expr, arg_id)

clippy_lints/src/methods/clone_on_ref_ptr.rs

@@ -1,7 +1,5 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
-use clippy_utils::paths;
 use clippy_utils::source::snippet_with_context;
-use clippy_utils::ty::{is_type_diagnostic_item, match_type};
 use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
@@ -22,15 +20,14 @@ pub(super) fn check(
     }
     let obj_ty = cx.typeck_results().expr_ty(receiver).peel_refs();
 
-    if let ty::Adt(_, subst) = obj_ty.kind() {
+    if let ty::Adt(adt, subst) = obj_ty.kind()
-        let caller_type = if is_type_diagnostic_item(cx, obj_ty, sym::Rc) {
+        && let Some(name) = cx.tcx.get_diagnostic_name(adt.did())
-            "Rc"
+    {
-        } else if is_type_diagnostic_item(cx, obj_ty, sym::Arc) {
+        let caller_type = match name {
-            "Arc"
+            sym::Rc => "Rc",
-        } else if match_type(cx, obj_ty, &paths::WEAK_RC) || match_type(cx, obj_ty, &paths::WEAK_ARC) {
+            sym::Arc => "Arc",
-            "Weak"
+            sym::RcWeak | sym::ArcWeak => "Weak",
-        } else {
+            _ => return,
-            return;
         };
 
         // Sometimes unnecessary ::<_> after Rc/Arc/Weak

clippy_lints/src/methods/from_iter_instead_of_collect.rs

@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::source::snippet_opt;
 use clippy_utils::ty::implements_trait;
-use clippy_utils::{is_expr_path_def_path, paths, sugg};
+use clippy_utils::{is_path_diagnostic_item, sugg};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir as hir;
@@ -13,7 +13,7 @@ use super::FROM_ITER_INSTEAD_OF_COLLECT;
 
 pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, args: &[hir::Expr<'_>], func: &hir::Expr<'_>) {
     if_chain! {
-        if is_expr_path_def_path(cx, func, &paths::FROM_ITERATOR_METHOD);
+        if is_path_diagnostic_item(cx, func, sym::from_iter_fn);
         let ty = cx.typeck_results().expr_ty(expr);
         let arg_ty = cx.typeck_results().expr_ty(&args[0]);
         if let Some(iter_id) = cx.tcx.get_diagnostic_item(sym::Iterator);

clippy_lints/src/methods/inefficient_to_string.rs

@@ -1,7 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet_with_applicability;
 use clippy_utils::ty::{is_type_lang_item, walk_ptrs_ty_depth};
-use clippy_utils::{match_def_path, paths};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir as hir;
@@ -22,7 +21,7 @@ pub fn check(
     if_chain! {
         if args.is_empty() && method_name == sym::to_string;
         if let Some(to_string_meth_did) = cx.typeck_results().type_dependent_def_id(expr.hir_id);
-        if match_def_path(cx, to_string_meth_did, &paths::TO_STRING_METHOD);
+        if cx.tcx.is_diagnostic_item(sym::to_string_method, to_string_meth_did);
         if let Some(args) = cx.typeck_results().node_args_opt(expr.hir_id);
         let arg_ty = cx.typeck_results().expr_ty_adjusted(receiver);
         let self_ty = args.type_at(0);

clippy_lints/src/methods/iter_kv_map.rs

@@ -26,7 +26,7 @@ pub(super) fn check<'tcx>(
     if_chain! {
         if !expr.span.from_expansion();
         if let ExprKind::Closure(c) = m_arg.kind;
-        if let Body {params: [p], value: body_expr, generator_kind: _ } = cx.tcx.hir().body(c.body);
+        if let Body {params: [p], value: body_expr, coroutine_kind: _ } = cx.tcx.hir().body(c.body);
         if let PatKind::Tuple([key_pat, val_pat], _) = p.pat.kind;
 
         let (replacement_kind, annotation, bound_ident) = match (&key_pat.kind, &val_pat.kind) {

clippy_lints/src/methods/iter_out_of_bounds.rs

@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_note;
 use clippy_utils::higher::VecArgs;
-use clippy_utils::{expr_or_init, is_trait_method, match_def_path, paths};
+use clippy_utils::{expr_or_init, is_trait_method};
 use rustc_ast::LitKind;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::LateContext;
@@ -26,14 +26,14 @@ fn get_iterator_length<'tcx>(cx: &LateContext<'tcx>, iter: &'tcx Expr<'tcx>) ->
     };
     let did = adt.did();
 
-    if match_def_path(cx, did, &paths::ARRAY_INTO_ITER) {
+    if cx.tcx.is_diagnostic_item(sym::ArrayIntoIter, did) {
         // For array::IntoIter<T, const N: usize>, the length is the second generic
         // parameter.
         substs
             .const_at(1)
             .try_eval_target_usize(cx.tcx, cx.param_env)
             .map(u128::from)
-    } else if match_def_path(cx, did, &paths::SLICE_ITER)
+    } else if cx.tcx.is_diagnostic_item(sym::SliceIter, did)
         && let ExprKind::MethodCall(_, recv, ..) = iter.kind
     {
         if let ty::Array(_, len) = cx.typeck_results().expr_ty(recv).peel_refs().kind() {
@@ -47,9 +47,9 @@ fn get_iterator_length<'tcx>(cx: &LateContext<'tcx>, iter: &'tcx Expr<'tcx>) ->
         } else {
             None
         }
-    } else if match_def_path(cx, did, &paths::ITER_EMPTY) {
+    } else if cx.tcx.is_diagnostic_item(sym::IterEmpty, did) {
         Some(0)
-    } else if match_def_path(cx, did, &paths::ITER_ONCE) {
+    } else if cx.tcx.is_diagnostic_item(sym::IterOnce, did) {
         Some(1)
     }  else {
         None

clippy_lints/src/methods/map_unwrap_or.rs

@@ -56,7 +56,7 @@ pub(super) fn check<'tcx>(
         // lint, with note if neither arg is > 1 line and both map() and
         // unwrap_or_else() have the same span
         let multiline = map_snippet.lines().count() > 1 || unwrap_snippet.lines().count() > 1;
-        let same_span = map_arg.span.ctxt() == unwrap_arg.span.ctxt();
+        let same_span = map_arg.span.eq_ctxt(unwrap_arg.span);
         if same_span && !multiline {
             let var_snippet = snippet(cx, recv.span, "..");
             span_lint_and_sugg(

clippy_lints/src/methods/open_options.rs

@@ -1,17 +1,17 @@
 use clippy_utils::diagnostics::span_lint;
-use clippy_utils::paths;
+use clippy_utils::ty::is_type_diagnostic_item;
-use clippy_utils::ty::match_type;
 use rustc_ast::ast::LitKind;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::LateContext;
 use rustc_span::source_map::{Span, Spanned};
+use rustc_span::sym;
 
 use super::NONSENSICAL_OPEN_OPTIONS;
 
 pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>, recv: &'tcx Expr<'_>) {
     if let Some(method_id) = cx.typeck_results().type_dependent_def_id(e.hir_id)
         && let Some(impl_id) = cx.tcx.impl_of_method(method_id)
-        && match_type(cx, cx.tcx.type_of(impl_id).instantiate_identity(), &paths::OPEN_OPTIONS)
+        && is_type_diagnostic_item(cx, cx.tcx.type_of(impl_id).instantiate_identity(), sym::FsOpenOptions)
     {
         let mut options = Vec::new();
         get_open_options(cx, recv, &mut options);
@@ -40,7 +40,7 @@ fn get_open_options(cx: &LateContext<'_>, argument: &Expr<'_>, options: &mut Vec
         let obj_ty = cx.typeck_results().expr_ty(receiver).peel_refs();
 
         // Only proceed if this is a call on some object of type std::fs::OpenOptions
-        if match_type(cx, obj_ty, &paths::OPEN_OPTIONS) && !arguments.is_empty() {
+        if is_type_diagnostic_item(cx, obj_ty, sym::FsOpenOptions) && !arguments.is_empty() {
             let argument_option = match arguments[0].kind {
                 ExprKind::Lit(span) => {
                     if let Spanned {

clippy_lints/src/methods/option_as_ref_deref.rs

@@ -32,8 +32,7 @@ pub(super) fn check(
         return;
     }
 
-    let deref_aliases: [&[&str]; 8] = [
+    let deref_aliases: [&[&str]; 7] = [
-        &paths::DEREF_MUT_TRAIT_METHOD,
         &paths::CSTRING_AS_C_STR,
         &paths::OS_STRING_AS_OS_STR,
         &paths::PATH_BUF_AS_PATH,
@@ -49,6 +48,7 @@ pub(super) fn check(
                 .opt_def_id()
                 .map_or(false, |fun_def_id| {
                     cx.tcx.is_diagnostic_item(sym::deref_method, fun_def_id)
+                        || cx.tcx.is_diagnostic_item(sym::deref_mut_method, fun_def_id)
                         || deref_aliases.iter().any(|path| match_def_path(cx, fun_def_id, path))
                 })
         },
@@ -70,6 +70,7 @@ pub(super) fn check(
                         then {
                             let method_did = cx.typeck_results().type_dependent_def_id(closure_expr.hir_id).unwrap();
                             cx.tcx.is_diagnostic_item(sym::deref_method, method_did)
+                                || cx.tcx.is_diagnostic_item(sym::deref_mut_method, method_did)
                                 || deref_aliases.iter().any(|path| match_def_path(cx, method_did, path))
                         } else {
                             false

clippy_lints/src/methods/seek_from_current.rs

@@ -2,18 +2,19 @@ use rustc_ast::ast::{LitIntType, LitKind};
 use rustc_errors::Applicability;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::LateContext;
+use rustc_span::sym;
 
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::source::snippet_with_applicability;
 use clippy_utils::ty::implements_trait;
-use clippy_utils::{get_trait_def_id, match_def_path, paths};
+use clippy_utils::{match_def_path, paths};
 
 use super::SEEK_FROM_CURRENT;
 
 pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, recv: &'tcx Expr<'_>, arg: &'tcx Expr<'_>) {
     let ty = cx.typeck_results().expr_ty(recv);
 
-    if let Some(def_id) = get_trait_def_id(cx, &paths::STD_IO_SEEK) {
+    if let Some(def_id) = cx.tcx.get_diagnostic_item(sym::IoSeek) {
         if implements_trait(cx, ty, def_id, &[]) && arg_is_seek_from_current(cx, arg) {
             let mut applicability = Applicability::MachineApplicable;
             let snip = snippet_with_applicability(cx, recv.span, "..", &mut applicability);

clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs

@@ -1,11 +1,11 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::ty::implements_trait;
-use clippy_utils::{get_trait_def_id, is_expr_used_or_unified, match_def_path, paths};
+use clippy_utils::{is_expr_used_or_unified, match_def_path, paths};
 use rustc_ast::ast::{LitIntType, LitKind};
 use rustc_errors::Applicability;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::LateContext;
-use rustc_span::Span;
+use rustc_span::{sym, Span};
 
 use super::SEEK_TO_START_INSTEAD_OF_REWIND;
 
@@ -23,7 +23,7 @@ pub(super) fn check<'tcx>(
         return;
     }
 
-    if let Some(seek_trait_id) = get_trait_def_id(cx, &paths::STD_IO_SEEK) &&
+    if let Some(seek_trait_id) = cx.tcx.get_diagnostic_item(sym::IoSeek) &&
         implements_trait(cx, ty, seek_trait_id, &[]) &&
         let ExprKind::Call(func, args1) = arg.kind &&
         let ExprKind::Path(ref path) = func.kind &&

clippy_lints/src/methods/suspicious_command_arg_space.rs

@@ -1,9 +1,8 @@
 use clippy_utils::diagnostics::span_lint_and_then;
-use clippy_utils::paths;
+use clippy_utils::ty::is_type_diagnostic_item;
-use clippy_utils::ty::match_type;
 use rustc_errors::{Applicability, Diagnostic};
 use rustc_lint::LateContext;
-use rustc_span::Span;
+use rustc_span::{sym, Span};
 use {rustc_ast as ast, rustc_hir as hir};
 
 use super::SUSPICIOUS_COMMAND_ARG_SPACE;
@@ -11,7 +10,7 @@ use super::SUSPICIOUS_COMMAND_ARG_SPACE;
 pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, recv: &'tcx hir::Expr<'_>, arg: &'tcx hir::Expr<'_>, span: Span) {
     let ty = cx.typeck_results().expr_ty(recv).peel_refs();
 
-    if match_type(cx, ty, &paths::STD_PROCESS_COMMAND)
+    if is_type_diagnostic_item(cx, ty, sym::Command)
         && let hir::ExprKind::Lit(lit) = &arg.kind
         && let ast::LitKind::Str(s, _) = &lit.node
         && let Some((arg1, arg2)) = s.as_str().split_once(' ')

clippy_lints/src/missing_fields_in_debug.rs

@@ -1,9 +1,9 @@
 use std::ops::ControlFlow;
 
 use clippy_utils::diagnostics::span_lint_and_then;
-use clippy_utils::ty::match_type;
+use clippy_utils::is_path_lang_item;
+use clippy_utils::ty::is_type_diagnostic_item;
 use clippy_utils::visitors::{for_each_expr, Visitable};
-use clippy_utils::{is_path_lang_item, paths};
 use rustc_ast::LitKind;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::def::{DefKind, Res};
@@ -114,9 +114,11 @@ fn should_lint<'tcx>(
         if let ExprKind::MethodCall(path, recv, ..) = &expr.kind {
             let recv_ty = typeck_results.expr_ty(recv).peel_refs();
 
-            if path.ident.name == sym::debug_struct && match_type(cx, recv_ty, &paths::FORMATTER) {
+            if path.ident.name == sym::debug_struct && is_type_diagnostic_item(cx, recv_ty, sym::Formatter) {
                 has_debug_struct = true;
-            } else if path.ident.name == sym!(finish_non_exhaustive) && match_type(cx, recv_ty, &paths::DEBUG_STRUCT) {
+            } else if path.ident.name == sym!(finish_non_exhaustive)
+                && is_type_diagnostic_item(cx, recv_ty, sym::DebugStruct)
+            {
                 has_finish_non_exhaustive = true;
             }
         }
@@ -137,7 +139,7 @@ fn as_field_call<'tcx>(
 ) -> Option<Symbol> {
     if let ExprKind::MethodCall(path, recv, [debug_field, _], _) = &expr.kind
         && let recv_ty = typeck_results.expr_ty(recv).peel_refs()
-        && match_type(cx, recv_ty, &paths::DEBUG_STRUCT)
+        && is_type_diagnostic_item(cx, recv_ty, sym::DebugStruct)
         && path.ident.name == sym::field
         && let ExprKind::Lit(lit) = &debug_field.kind
         && let LitKind::Str(sym, ..) = lit.node

clippy_lints/src/mut_reference.rs

@@ -49,7 +49,7 @@ impl<'tcx> LateLintPass<'tcx> for UnnecessaryMutPassed {
                         cx,
                         arguments.iter().collect(),
                         cx.typeck_results().expr_ty(fn_expr),
-                        &rustc_hir_pretty::to_string(rustc_hir_pretty::NO_ANN, |s| s.print_qpath(path, false)),
+                        &rustc_hir_pretty::qpath_to_string(path),
                         "function",
                     );
                 }

clippy_lints/src/needless_pass_by_value.rs

@@ -1,10 +1,10 @@
 use clippy_utils::diagnostics::{multispan_sugg, span_lint_and_then};
+use clippy_utils::is_self;
 use clippy_utils::ptr::get_spans;
 use clippy_utils::source::{snippet, snippet_opt};
 use clippy_utils::ty::{
     implements_trait, implements_trait_with_env_from_iter, is_copy, is_type_diagnostic_item, is_type_lang_item,
 };
-use clippy_utils::{get_trait_def_id, is_self, paths};
 use if_chain::if_chain;
 use rustc_ast::ast::Attribute;
 use rustc_errors::{Applicability, Diagnostic};
@@ -115,7 +115,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue {
             need!(cx.tcx.lang_items().fn_trait()),
             need!(cx.tcx.lang_items().fn_once_trait()),
             need!(cx.tcx.lang_items().fn_mut_trait()),
-            need!(get_trait_def_id(cx, &paths::RANGE_ARGUMENT_TRAIT)),
+            need!(cx.tcx.get_diagnostic_item(sym::RangeBounds)),
         ];
 
         let sized_trait = need!(cx.tcx.lang_items().sized_trait());

clippy_lints/src/needless_question_mark.rs

@@ -4,7 +4,7 @@ use clippy_utils::source::snippet;
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::def::{DefKind, Res};
-use rustc_hir::{AsyncGeneratorKind, Block, Body, Expr, ExprKind, GeneratorKind, LangItem, MatchSource, QPath};
+use rustc_hir::{AsyncCoroutineKind, Block, Body, CoroutineKind, Expr, ExprKind, LangItem, MatchSource, QPath};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 
@@ -87,7 +87,7 @@ impl LateLintPass<'_> for NeedlessQuestionMark {
     }
 
     fn check_body(&mut self, cx: &LateContext<'_>, body: &'_ Body<'_>) {
-        if let Some(GeneratorKind::Async(AsyncGeneratorKind::Fn)) = body.generator_kind {
+        if let Some(CoroutineKind::Async(AsyncCoroutineKind::Fn)) = body.coroutine_kind {
             if let ExprKind::Block(
                 Block {
                     expr:
@@ -125,7 +125,7 @@ fn check(cx: &LateContext<'_>, expr: &Expr<'_>) {
         if let ExprKind::Match(inner_expr_with_q, _, MatchSource::TryDesugar(_)) = &arg.kind;
         if let ExprKind::Call(called, [inner_expr]) = &inner_expr_with_q.kind;
         if let ExprKind::Path(QPath::LangItem(LangItem::TryTraitBranch, ..)) = &called.kind;
-        if expr.span.ctxt() == inner_expr.span.ctxt();
+        if expr.span.eq_ctxt(inner_expr.span);
         let expr_ty = cx.typeck_results().expr_ty(expr);
         let inner_ty = cx.typeck_results().expr_ty(inner_expr);
         if expr_ty == inner_ty;

clippy_lints/src/non_canonical_impls.rs

@@ -1,7 +1,6 @@
 use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then};
-use clippy_utils::paths::ORD_CMP;
 use clippy_utils::ty::implements_trait;
-use clippy_utils::{get_parent_node, is_res_lang_ctor, last_path_segment, match_def_path, path_res, std_or_core};
+use clippy_utils::{get_parent_node, is_res_lang_ctor, last_path_segment, path_res, std_or_core};
 use rustc_errors::Applicability;
 use rustc_hir::def_id::LocalDefId;
 use rustc_hir::{Expr, ExprKind, ImplItem, ImplItemKind, LangItem, Node, UnOp};
@@ -261,7 +260,7 @@ fn self_cmp_call<'tcx>(
     match cmp_expr.kind {
         ExprKind::Call(path, [_self, _other]) => path_res(cx, path)
             .opt_def_id()
-            .is_some_and(|def_id| match_def_path(cx, def_id, &ORD_CMP)),
+            .is_some_and(|def_id| cx.tcx.is_diagnostic_item(sym::ord_cmp_method, def_id)),
         ExprKind::MethodCall(_, _, [_other], ..) => {
             // We can set this to true here no matter what as if it's a `MethodCall` and goes to the
             // `else` branch, it must be a method named `cmp` that isn't `Ord::cmp`
@@ -273,7 +272,7 @@ fn self_cmp_call<'tcx>(
             cx.tcx
                 .typeck(def_id)
                 .type_dependent_def_id(cmp_expr.hir_id)
-                .is_some_and(|def_id| match_def_path(cx, def_id, &ORD_CMP))
+                .is_some_and(|def_id| cx.tcx.is_diagnostic_item(sym::ord_cmp_method, def_id))
         },
         _ => false,
     }

clippy_lints/src/non_octal_unix_permissions.rs

@@ -1,6 +1,5 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::source::{snippet_opt, snippet_with_applicability};
-use clippy_utils::ty::{is_type_diagnostic_item, match_type};
 use clippy_utils::{match_def_path, paths};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
@@ -45,15 +44,14 @@ impl<'tcx> LateLintPass<'tcx> for NonOctalUnixPermissions {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) {
         match &expr.kind {
             ExprKind::MethodCall(path, func, [param], _) => {
-                let obj_ty = cx.typeck_results().expr_ty(func).peel_refs();
-
                 if_chain! {
+                    if let Some(adt) = cx.typeck_results().expr_ty(func).peel_refs().ty_adt_def();
                     if (path.ident.name == sym!(mode)
-                        && (match_type(cx, obj_ty, &paths::OPEN_OPTIONS)
+                        && matches!(cx.tcx.get_diagnostic_name(adt.did()), Some(sym::FsOpenOptions | sym::DirBuilder)))
-                            || is_type_diagnostic_item(cx, obj_ty, sym::DirBuilder)))
+                        || (path.ident.name == sym!(set_mode)
-                        || (path.ident.name == sym!(set_mode) && match_type(cx, obj_ty, &paths::PERMISSIONS));
+                            && cx.tcx.is_diagnostic_item(sym::FsPermissions, adt.did()));
                     if let ExprKind::Lit(_) = param.kind;
-                    if param.span.ctxt() == expr.span.ctxt();
+                    if param.span.eq_ctxt(expr.span);
 
                     then {
                         let Some(snip) = snippet_opt(cx, param.span) else {
@@ -72,7 +70,7 @@ impl<'tcx> LateLintPass<'tcx> for NonOctalUnixPermissions {
                     if let Some(def_id) = cx.qpath_res(path, func.hir_id).opt_def_id();
                     if match_def_path(cx, def_id, &paths::PERMISSIONS_FROM_MODE);
                     if let ExprKind::Lit(_) = param.kind;
-                    if param.span.ctxt() == expr.span.ctxt();
+                    if param.span.eq_ctxt(expr.span);
                     if let Some(snip) = snippet_opt(cx, param.span);
                     if !snip.starts_with("0o");
                     then {

clippy_lints/src/non_send_fields_in_send_ty.rs

@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::span_lint_and_then;
+use clippy_utils::is_lint_allowed;
 use clippy_utils::source::snippet;
 use clippy_utils::ty::{implements_trait, is_copy};
-use clippy_utils::{is_lint_allowed, match_def_path, paths};
 use rustc_ast::ImplPolarity;
 use rustc_hir::def_id::DefId;
 use rustc_hir::{FieldDef, Item, ItemKind, Node};
@@ -233,7 +233,7 @@ fn contains_pointer_like<'tcx>(cx: &LateContext<'tcx>, target_ty: Ty<'tcx>) -> b
                     return true;
                 },
                 ty::Adt(adt_def, _) => {
-                    if match_def_path(cx, adt_def.did(), &paths::PTR_NON_NULL) {
+                    if cx.tcx.is_diagnostic_item(sym::NonNull, adt_def.did()) {
                         return true;
                     }
                 },

clippy_lints/src/operators/cmp_owned.rs

@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::span_lint_and_then;
+use clippy_utils::path_def_id;
 use clippy_utils::source::snippet;
 use clippy_utils::ty::{implements_trait, is_copy};
-use clippy_utils::{match_def_path, path_def_id, paths};
 use rustc_errors::Applicability;
 use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp};
 use rustc_lint::LateContext;
@@ -50,7 +50,7 @@ fn check_op(cx: &LateContext<'_>, expr: &Expr<'_>, other: &Expr<'_>, left: bool)
         },
         ExprKind::Call(path, [arg])
             if path_def_id(cx, path).map_or(false, |did| {
-                if match_def_path(cx, did, &paths::FROM_STR_METHOD) {
+                if cx.tcx.is_diagnostic_item(sym::from_str_method, did) {
                     true
                 } else if cx.tcx.is_diagnostic_item(sym::from_fn, did) {
                     !is_copy(cx, typeck.expr_ty(expr))

clippy_lints/src/permissions_set_readonly_false.rs

@@ -1,10 +1,10 @@
 use clippy_utils::diagnostics::span_lint_and_then;
-use clippy_utils::paths;
+use clippy_utils::ty::is_type_diagnostic_item;
-use clippy_utils::ty::match_type;
 use rustc_ast::ast::LitKind;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -31,7 +31,7 @@ declare_lint_pass!(PermissionsSetReadonlyFalse => [PERMISSIONS_SET_READONLY_FALS
 impl<'tcx> LateLintPass<'tcx> for PermissionsSetReadonlyFalse {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) {
         if let ExprKind::MethodCall(path, receiver, [arg], _) = &expr.kind
-            && match_type(cx, cx.typeck_results().expr_ty(receiver), &paths::PERMISSIONS)
+            && is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(receiver), sym::FsPermissions)
             && path.ident.name == sym!(set_readonly)
             && let ExprKind::Lit(lit) = &arg.kind
             && LitKind::Bool(false) == lit.node

clippy_lints/src/ptr.rs

@@ -4,9 +4,8 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_the
 use clippy_utils::source::snippet_opt;
 use clippy_utils::ty::expr_sig;
 use clippy_utils::visitors::contains_unsafe_block;
-use clippy_utils::{get_expr_use_or_unification_node, is_lint_allowed, path_def_id, path_to_local, paths};
+use clippy_utils::{get_expr_use_or_unification_node, is_lint_allowed, path_def_id, path_to_local};
 use hir::LifetimeName;
-use if_chain::if_chain;
 use rustc_errors::{Applicability, MultiSpan};
 use rustc_hir::def_id::DefId;
 use rustc_hir::hir_id::HirIdMap;
@@ -271,60 +270,43 @@ impl<'tcx> LateLintPass<'tcx> for Ptr {
 }
 
 fn check_invalid_ptr_usage<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
-    // (fn_path, arg_indices) - `arg_indices` are the `arg` positions where null would cause U.B.
+    if let ExprKind::Call(fun, args) = expr.kind
-    const INVALID_NULL_PTR_USAGE_TABLE: [(&[&str], &[usize]); 13] = [
+        && let ExprKind::Path(ref qpath) = fun.kind
-        (&paths::SLICE_FROM_RAW_PARTS, &[0]),
+        && let Some(fun_def_id) = cx.qpath_res(qpath, fun.hir_id).opt_def_id()
-        (&paths::SLICE_FROM_RAW_PARTS_MUT, &[0]),
+        && let Some(name) = cx.tcx.get_diagnostic_name(fun_def_id)
-        (&paths::PTR_COPY, &[0, 1]),
+    {
-        (&paths::PTR_COPY_NONOVERLAPPING, &[0, 1]),
+        // `arg` positions where null would cause U.B.
-        (&paths::PTR_READ, &[0]),
+        let arg_indices: &[_] = match name {
-        (&paths::PTR_READ_UNALIGNED, &[0]),
+            sym::ptr_read
-        (&paths::PTR_READ_VOLATILE, &[0]),
+            | sym::ptr_read_unaligned
-        (&paths::PTR_REPLACE, &[0]),
+            | sym::ptr_read_volatile
-        (&paths::PTR_SLICE_FROM_RAW_PARTS, &[0]),
+            | sym::ptr_replace
-        (&paths::PTR_SLICE_FROM_RAW_PARTS_MUT, &[0]),
+            | sym::ptr_slice_from_raw_parts
-        (&paths::PTR_SWAP, &[0, 1]),
+            | sym::ptr_slice_from_raw_parts_mut
-        (&paths::PTR_SWAP_NONOVERLAPPING, &[0, 1]),
+            | sym::ptr_write
-        (&paths::PTR_WRITE_BYTES, &[0]),
+            | sym::ptr_write_bytes
-    ];
+            | sym::ptr_write_unaligned
-    let invalid_null_ptr_usage_table_diag_items: [(Option<DefId>, &[usize]); 3] = [
+            | sym::ptr_write_volatile
-        (cx.tcx.get_diagnostic_item(sym::ptr_write), &[0]),
+            | sym::slice_from_raw_parts
-        (cx.tcx.get_diagnostic_item(sym::ptr_write_unaligned), &[0]),
+            | sym::slice_from_raw_parts_mut => &[0],
-        (cx.tcx.get_diagnostic_item(sym::ptr_write_volatile), &[0]),
+            sym::ptr_copy
-    ];
+            | sym::ptr_copy_nonoverlapping
+            | sym::ptr_swap
+            | sym::ptr_swap_nonoverlapping => &[0, 1],
+            _ => return,
+        };
 
-    if_chain! {
+        for &arg_idx in arg_indices {
-        if let ExprKind::Call(fun, args) = expr.kind;
+            if let Some(arg) = args.get(arg_idx).filter(|arg| is_null_path(cx, arg)) {
-        if let ExprKind::Path(ref qpath) = fun.kind;
+                span_lint_and_sugg(
-        if let Some(fun_def_id) = cx.qpath_res(qpath, fun.hir_id).opt_def_id();
+                    cx,
-        let fun_def_path = cx.get_def_path(fun_def_id).into_iter().map(Symbol::to_ident_string).collect::<Vec<_>>();
+                    INVALID_NULL_PTR_USAGE,
-        if let Some(arg_indices) = INVALID_NULL_PTR_USAGE_TABLE
+                    arg.span,
-            .iter()
+                    "pointer must be non-null",
-            .find_map(|&(fn_path, indices)| if fn_path == fun_def_path { Some(indices) } else { None })
+                    "change this to",
-            .or_else(|| {
+                    "core::ptr::NonNull::dangling().as_ptr()".to_string(),
-                invalid_null_ptr_usage_table_diag_items
+                    Applicability::MachineApplicable,
-                    .iter()
+                );
-                    .find_map(|&(def_id, indices)| {
-                        if def_id == Some(fun_def_id) {
-                            Some(indices)
-                        } else {
-                            None
-                        }
-                    })
-            });
-        then {
-            for &arg_idx in arg_indices {
-                if let Some(arg) = args.get(arg_idx).filter(|arg| is_null_path(cx, arg)) {
-                    span_lint_and_sugg(
-                        cx,
-                        INVALID_NULL_PTR_USAGE,
-                        arg.span,
-                        "pointer must be non-null",
-                        "change this to",
-                        "core::ptr::NonNull::dangling().as_ptr()".to_string(),
-                        Applicability::MachineApplicable,
-                    );
-                }
             }
         }
     }

clippy_lints/src/rc_clone_in_vec_init.rs

@@ -1,12 +1,12 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::higher::VecArgs;
+use clippy_utils::last_path_segment;
 use clippy_utils::macros::root_macro_call_first_node;
 use clippy_utils::source::{indent_of, snippet};
-use clippy_utils::ty::match_type;
-use clippy_utils::{last_path_segment, paths};
 use rustc_errors::Applicability;
 use rustc_hir::{Expr, ExprKind, QPath, TyKind};
 use rustc_lint::{LateContext, LateLintPass};
+use rustc_middle::ty;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::{sym, Span, Symbol};
 
@@ -133,8 +133,9 @@ fn ref_init(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<(Symbol, Span)> {
                 return Some((symbol, func.span));
             }
 
-            let ty_path = cx.typeck_results().expr_ty(expr);
+            if let ty::Adt(adt, _) = *cx.typeck_results().expr_ty(expr).kind()
-            if match_type(cx, ty_path, &paths::WEAK_RC) || match_type(cx, ty_path, &paths::WEAK_ARC) {
+                && matches!(cx.tcx.get_diagnostic_name(adt.did()), Some(sym::RcWeak | sym::ArcWeak))
+            {
                 return Some((Symbol::intern("Weak"), func.span));
             }
         }

clippy_lints/src/redundant_async_block.rs

@@ -5,7 +5,7 @@ use clippy_utils::peel_blocks;
 use clippy_utils::source::{snippet, walk_span_to_context};
 use clippy_utils::visitors::for_each_expr;
 use rustc_errors::Applicability;
-use rustc_hir::{AsyncGeneratorKind, Closure, Expr, ExprKind, GeneratorKind, MatchSource};
+use rustc_hir::{AsyncCoroutineKind, Closure, CoroutineKind, Expr, ExprKind, MatchSource};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::lint::in_external_macro;
 use rustc_middle::ty::UpvarCapture;
@@ -48,7 +48,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantAsyncBlock {
             let Some(body_expr) = desugar_async_block(cx, expr) &&
             let Some(expr) = desugar_await(peel_blocks(body_expr)) &&
             // The await prefix must not come from a macro as its content could change in the future.
-            expr.span.ctxt() == body_expr.span.ctxt() &&
+            expr.span.eq_ctxt(body_expr.span) &&
             // An async block does not have immediate side-effects from a `.await` point-of-view.
             (!expr.can_have_side_effects() || desugar_async_block(cx, expr).is_some()) &&
             let Some(shortened_span) = walk_span_to_context(expr.span, span.ctxt())
@@ -71,7 +71,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantAsyncBlock {
 fn desugar_async_block<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Option<&'tcx Expr<'tcx>> {
     if let ExprKind::Closure(Closure { body, def_id, .. }) = expr.kind &&
         let body = cx.tcx.hir().body(*body) &&
-        matches!(body.generator_kind, Some(GeneratorKind::Async(AsyncGeneratorKind::Block)))
+        matches!(body.coroutine_kind, Some(CoroutineKind::Async(AsyncCoroutineKind::Block)))
     {
         cx
             .typeck_results()

clippy_lints/src/redundant_clone.rs

@@ -99,8 +99,8 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClone {
                 unwrap_or_continue!(is_call_with_ref_arg(cx, mir, &terminator.kind));
 
             let from_borrow = match_def_path(cx, fn_def_id, &paths::CLONE_TRAIT_METHOD)
-                || match_def_path(cx, fn_def_id, &paths::TO_OWNED_METHOD)
+                || cx.tcx.is_diagnostic_item(sym::to_owned_method, fn_def_id)
-                || (match_def_path(cx, fn_def_id, &paths::TO_STRING_METHOD)
+                || (cx.tcx.is_diagnostic_item(sym::to_string_method, fn_def_id)
                     && is_type_lang_item(cx, arg_ty, LangItem::String));
 
             let from_deref = !from_borrow

clippy_lints/src/redundant_closure_call.rs

@@ -144,7 +144,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClosureCall {
             // without this check, we'd end up linting twice.
             && !matches!(recv.kind, hir::ExprKind::Call(..))
             && let (full_expr, call_depth) = get_parent_call_exprs(cx, expr)
-            && let Some((body, fn_decl, generator_kind)) = find_innermost_closure(cx, recv, call_depth)
+            && let Some((body, fn_decl, coroutine_kind)) = find_innermost_closure(cx, recv, call_depth)
         {
             span_lint_and_then(
                 cx,
@@ -156,7 +156,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClosureCall {
                         let mut applicability = Applicability::MachineApplicable;
                         let mut hint = Sugg::hir_with_context(cx, body, full_expr.span.ctxt(), "..", &mut applicability);
 
-                        if generator_kind.is_async()
+                        if coroutine_kind.is_async()
                             && let hir::ExprKind::Closure(closure) = body.kind
                         {
                             let async_closure_body = cx.tcx.hir().body(closure.body);

clippy_lints/src/reference.rs

@@ -50,7 +50,7 @@ impl EarlyLintPass for DerefAddrOf {
         if_chain! {
             if let ExprKind::Unary(UnOp::Deref, ref deref_target) = e.kind;
             if let ExprKind::AddrOf(_, ref mutability, ref addrof_target) = without_parens(deref_target).kind;
-            if deref_target.span.ctxt() == e.span.ctxt();
+            if deref_target.span.eq_ctxt(e.span);
             if !addrof_target.span.from_expansion();
             then {
                 let mut applicability = Applicability::MachineApplicable;

clippy_lints/src/size_of_in_element_count.rs

@@ -2,7 +2,6 @@
 //! expecting a count of T
 
 use clippy_utils::diagnostics::span_lint_and_help;
-use clippy_utils::{match_def_path, paths};
 use if_chain::if_chain;
 use rustc_hir::{BinOpKind, Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
@@ -67,16 +66,6 @@ fn get_pointee_ty_and_count_expr<'tcx>(
     cx: &LateContext<'tcx>,
     expr: &'tcx Expr<'_>,
 ) -> Option<(Ty<'tcx>, &'tcx Expr<'tcx>)> {
-    const FUNCTIONS: [&[&str]; 8] = [
-        &paths::PTR_COPY_NONOVERLAPPING,
-        &paths::PTR_COPY,
-        &paths::PTR_WRITE_BYTES,
-        &paths::PTR_SWAP_NONOVERLAPPING,
-        &paths::PTR_SLICE_FROM_RAW_PARTS,
-        &paths::PTR_SLICE_FROM_RAW_PARTS_MUT,
-        &paths::SLICE_FROM_RAW_PARTS,
-        &paths::SLICE_FROM_RAW_PARTS_MUT,
-    ];
     const METHODS: [&str; 11] = [
         "write_bytes",
         "copy_to",
@@ -97,7 +86,16 @@ fn get_pointee_ty_and_count_expr<'tcx>(
         if let ExprKind::Call(func, [.., count]) = expr.kind;
         if let ExprKind::Path(ref func_qpath) = func.kind;
         if let Some(def_id) = cx.qpath_res(func_qpath, func.hir_id).opt_def_id();
-        if FUNCTIONS.iter().any(|func_path| match_def_path(cx, def_id, func_path));
+        if matches!(cx.tcx.get_diagnostic_name(def_id), Some(
+            sym::ptr_copy
+            | sym::ptr_copy_nonoverlapping
+            | sym::ptr_slice_from_raw_parts
+            | sym::ptr_slice_from_raw_parts_mut
+            | sym::ptr_swap_nonoverlapping
+            | sym::ptr_write_bytes
+            | sym::slice_from_raw_parts
+            | sym::slice_from_raw_parts_mut
+        ));
 
         // Get the pointee type
         if let Some(pointee_ty) = cx.typeck_results().node_args(func.hir_id).types().next();

clippy_lints/src/suspicious_xor_used_as_pow.rs

@@ -33,7 +33,7 @@ impl LateLintPass<'_> for ConfusingXorAndPow {
         if !in_external_macro(cx.sess(), expr.span)
             && let ExprKind::Binary(op, left, right) = &expr.kind
             && op.node == BinOpKind::BitXor
-            && left.span.ctxt() == right.span.ctxt()
+            && left.span.eq_ctxt(right.span)
             && let ExprKind::Lit(lit_left) = &left.kind
             && let ExprKind::Lit(lit_right) = &right.kind
             && matches!(lit_right.node, LitKind::Int(..) | LitKind::Float(..))

clippy_lints/src/swap_ptr_to_ref.rs

@@ -1,11 +1,11 @@
 use clippy_utils::diagnostics::span_lint_and_then;
+use clippy_utils::path_def_id;
 use clippy_utils::source::snippet_with_context;
-use clippy_utils::{match_def_path, path_def_id, paths};
 use rustc_errors::Applicability;
 use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, UnOp};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::{Span, SyntaxContext};
+use rustc_span::{sym, Span, SyntaxContext};
 
 declare_clippy_lint! {
     /// ### What it does
@@ -42,7 +42,7 @@ impl LateLintPass<'_> for SwapPtrToRef {
     fn check_expr(&mut self, cx: &LateContext<'_>, e: &Expr<'_>) {
         if let ExprKind::Call(fn_expr, [arg1, arg2]) = e.kind
             && let Some(fn_id) = path_def_id(cx, fn_expr)
-            && match_def_path(cx, fn_id, &paths::MEM_SWAP)
+            && cx.tcx.is_diagnostic_item(sym::mem_swap, fn_id)
             && let ctxt = e.span.ctxt()
             && let (from_ptr1, arg1_span) = is_ptr_to_ref(cx, arg1, ctxt)
             && let (from_ptr2, arg2_span) = is_ptr_to_ref(cx, arg2, ctxt)

clippy_lints/src/unnamed_address.rs

@@ -1,10 +1,10 @@
 use clippy_utils::diagnostics::{span_lint, span_lint_and_help};
-use clippy_utils::{match_def_path, paths};
 use if_chain::if_chain;
 use rustc_hir::{BinOpKind, Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -96,7 +96,7 @@ impl LateLintPass<'_> for UnnamedAddress {
             if let ExprKind::Call(func, [ref _left, ref _right]) = expr.kind;
             if let ExprKind::Path(ref func_qpath) = func.kind;
             if let Some(def_id) = cx.qpath_res(func_qpath, func.hir_id).opt_def_id();
-            if match_def_path(cx, def_id, &paths::PTR_EQ);
+            if cx.tcx.is_diagnostic_item(sym::ptr_eq, def_id);
             let ty_param = cx.typeck_results().node_args(func.hir_id).type_at(0);
             if ty_param.is_trait();
             then {

clippy_lints/src/unused_async.rs

@@ -86,7 +86,7 @@ impl<'a, 'tcx> Visitor<'tcx> for AsyncFnVisitor<'a, 'tcx> {
     }
 
     fn visit_body(&mut self, b: &'tcx Body<'tcx>) {
-        let is_async_block = matches!(b.generator_kind, Some(rustc_hir::GeneratorKind::Async(_)));
+        let is_async_block = matches!(b.coroutine_kind, Some(rustc_hir::CoroutineKind::Async(_)));
 
         if is_async_block {
             self.async_depth += 1;

clippy_lints/src/unused_peekable.rs

@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_help;
-use clippy_utils::ty::{match_type, peel_mid_ty_refs_is_mutable};
+use clippy_utils::ty::{is_type_diagnostic_item, peel_mid_ty_refs_is_mutable};
-use clippy_utils::{fn_def_id, is_trait_method, path_to_local_id, paths, peel_ref_operators};
+use clippy_utils::{fn_def_id, is_trait_method, path_to_local_id, peel_ref_operators};
 use rustc_ast::Mutability;
 use rustc_hir::intravisit::{walk_expr, Visitor};
 use rustc_hir::{Block, Expr, ExprKind, HirId, Local, Node, PatKind, PathSegment, StmtKind};
@@ -49,7 +49,7 @@ impl<'tcx> LateLintPass<'tcx> for UnusedPeekable {
         // Don't lint `Peekable`s returned from a block
         if let Some(expr) = block.expr
             && let Some(ty) = cx.typeck_results().expr_ty_opt(peel_ref_operators(cx, expr))
-            && match_type(cx, ty, &paths::PEEKABLE)
+            && is_type_diagnostic_item(cx, ty, sym::IterPeekable)
         {
             return;
         }
@@ -62,7 +62,7 @@ impl<'tcx> LateLintPass<'tcx> for UnusedPeekable {
                 && !init.span.from_expansion()
                 && let Some(ty) = cx.typeck_results().expr_ty_opt(init)
                 && let (ty, _, Mutability::Mut) = peel_mid_ty_refs_is_mutable(ty)
-                && match_type(cx, ty, &paths::PEEKABLE)
+                && is_type_diagnostic_item(cx, ty, sym::IterPeekable)
             {
                 let mut vis = PeekableVisitor::new(cx, binding);
 
@@ -222,7 +222,7 @@ impl<'tcx> Visitor<'tcx> for PeekableVisitor<'_, 'tcx> {
 fn arg_is_mut_peekable(cx: &LateContext<'_>, arg: &Expr<'_>) -> bool {
     if let Some(ty) = cx.typeck_results().expr_ty_opt(arg)
         && let (ty, _, Mutability::Mut) = peel_mid_ty_refs_is_mutable(ty)
-        && match_type(cx, ty, &paths::PEEKABLE)
+        && is_type_diagnostic_item(cx, ty, sym::IterPeekable)
     {
         true
     } else {

clippy_lints/src/useless_conversion.rs

@@ -2,7 +2,7 @@ use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg, span_lin
 use clippy_utils::source::{snippet, snippet_with_applicability, snippet_with_context};
 use clippy_utils::sugg::Sugg;
 use clippy_utils::ty::{is_copy, is_type_diagnostic_item, same_type_and_consts};
-use clippy_utils::{get_parent_expr, is_trait_method, is_ty_alias, match_def_path, path_to_local, paths};
+use clippy_utils::{get_parent_expr, is_trait_method, is_ty_alias, path_to_local};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::def::DefKind;
@@ -331,7 +331,7 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion {
                         let a = cx.typeck_results().expr_ty(e);
                         let b = cx.typeck_results().expr_ty(arg);
                         if_chain! {
-                            if match_def_path(cx, def_id, &paths::TRY_FROM);
+                            if cx.tcx.is_diagnostic_item(sym::try_from_fn, def_id);
                             if is_type_diagnostic_item(cx, a, sym::Result);
                             if let ty::Adt(_, args) = a.kind();
                             if let Some(a_type) = args.types().next();

clippy_lints/src/utils/internal_lints/if_chain_style.rs

@@ -30,7 +30,7 @@ impl<'tcx> LateLintPass<'tcx> for IfChainStyle {
                 if_chain_local_span(cx, local, if_chain_span),
                 "`let` expression should be above the `if_chain!`",
             );
-        } else if local.span.ctxt() == block.span.ctxt() && is_if_chain_then(after, block.expr, if_chain_span) {
+        } else if local.span.eq_ctxt(block.span) && is_if_chain_then(after, block.expr, if_chain_span) {
             span_lint(
                 cx,
                 IF_CHAIN_STYLE,

clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs

@@ -13,6 +13,7 @@ use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::mir::ConstValue;
 use rustc_middle::ty;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
+use rustc_span::sym;
 use rustc_span::symbol::Symbol;
 
 use std::borrow::Cow;
@@ -160,12 +161,8 @@ impl<'tcx> LateLintPass<'tcx> for InterningDefinedSymbol {
 
 impl InterningDefinedSymbol {
     fn symbol_str_expr<'tcx>(&self, expr: &'tcx Expr<'tcx>, cx: &LateContext<'tcx>) -> Option<SymbolStrExpr<'tcx>> {
-        static IDENT_STR_PATHS: &[&[&str]] = &[&paths::IDENT_AS_STR, &paths::TO_STRING_METHOD];
+        static IDENT_STR_PATHS: &[&[&str]] = &[&paths::IDENT_AS_STR];
-        static SYMBOL_STR_PATHS: &[&[&str]] = &[
+        static SYMBOL_STR_PATHS: &[&[&str]] = &[&paths::SYMBOL_AS_STR, &paths::SYMBOL_TO_IDENT_STRING];
-            &paths::SYMBOL_AS_STR,
-            &paths::SYMBOL_TO_IDENT_STRING,
-            &paths::TO_STRING_METHOD,
-        ];
         let call = if_chain! {
             if let ExprKind::AddrOf(_, _, e) = expr.kind;
             if let ExprKind::Unary(UnOp::Deref, e) = e.kind;
@@ -186,9 +183,19 @@ impl InterningDefinedSymbol {
             };
             // ...which converts it to a string
             let paths = if is_ident { IDENT_STR_PATHS } else { SYMBOL_STR_PATHS };
-            if let Some(path) = paths.iter().find(|path| match_def_path(cx, did, path));
+            if let Some(is_to_owned) = paths
+                .iter()
+                .find_map(|path| if match_def_path(cx, did, path) {
+                    Some(path == &paths::SYMBOL_TO_IDENT_STRING)
+                } else {
+                    None
+                })
+                .or_else(|| if cx.tcx.is_diagnostic_item(sym::to_string_method, did) {
+                    Some(true)
+                } else {
+                    None
+                });
             then {
-                let is_to_owned = path.last().unwrap().ends_with("string");
                 return Some(SymbolStrExpr::Expr {
                     item,
                     is_ident,

clippy_lints/src/utils/internal_lints/metadata_collector.rs

@@ -494,7 +494,7 @@ impl SerializableSpan {
         let loc: Loc = cx.sess().source_map().lookup_char_pos(span.lo());
 
         Self {
-            path: format!("{}", loc.file.name.prefer_remapped()),
+            path: format!("{}", loc.file.name.prefer_remapped_unconditionaly()),
             line: loc.line,
         }
     }

clippy_utils/src/higher.rs

@@ -457,7 +457,7 @@ pub fn get_vec_init_kind<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -
                 };
             },
             ExprKind::Path(QPath::Resolved(_, path))
-                if match_def_path(cx, path.res.opt_def_id()?, &paths::DEFAULT_TRAIT_METHOD)
+                if cx.tcx.is_diagnostic_item(sym::default_fn, path.res.opt_def_id()?)
                     && is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(expr), sym::Vec) =>
             {
                 return Some(VecInitKind::Default);

clippy_utils/src/lib.rs

@@ -2048,21 +2048,33 @@ fn is_body_identity_function(cx: &LateContext<'_>, func: &Body<'_>) -> bool {
     let mut expr = func.value;
     loop {
         match expr.kind {
-            #[rustfmt::skip]
+            ExprKind::Block(
-                ExprKind::Block(&Block { stmts: [], expr: Some(e), .. }, _, )
+                &Block {
-                | ExprKind::Ret(Some(e)) => expr = e,
+                    stmts: [],
-            #[rustfmt::skip]
+                    expr: Some(e),
-                ExprKind::Block(&Block { stmts: [stmt], expr: None, .. }, _) => {
+                    ..
-                    if_chain! {
-                        if let StmtKind::Semi(e) | StmtKind::Expr(e) = stmt.kind;
-                        if let ExprKind::Ret(Some(ret_val)) = e.kind;
-                        then {
-                            expr = ret_val;
-                        } else {
-                            return false;
-                        }
-                    }
                 },
+                _,
+            )
+            | ExprKind::Ret(Some(e)) => expr = e,
+            ExprKind::Block(
+                &Block {
+                    stmts: [stmt],
+                    expr: None,
+                    ..
+                },
+                _,
+            ) => {
+                if_chain! {
+                    if let StmtKind::Semi(e) | StmtKind::Expr(e) = stmt.kind;
+                    if let ExprKind::Ret(Some(ret_val)) = e.kind;
+                    then {
+                        expr = ret_val;
+                    } else {
+                        return false;
+                    }
+                }
+            },
             _ => return path_to_local_id(expr, id) && cx.typeck_results().expr_adjustments(expr).is_empty(),
         }
     }
@@ -2081,9 +2093,8 @@ pub fn is_expr_untyped_identity_function(cx: &LateContext<'_>, expr: &Expr<'_>)
         },
         ExprKind::Path(QPath::Resolved(_, path))
             if path.segments.iter().all(|seg| seg.infer_args)
-                && let Some(did) = path.res.opt_def_id() =>
+                && let Some(did) = path.res.opt_def_id() => {
-        {
+            cx.tcx.is_diagnostic_item(sym::convert_identity, did)
-            match_def_path(cx, did, &paths::CONVERT_IDENTITY)
         },
         _ => false,
     }
@@ -2100,7 +2111,7 @@ pub fn is_expr_untyped_identity_function(cx: &LateContext<'_>, expr: &Expr<'_>)
 pub fn is_expr_identity_function(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
     match expr.kind {
         ExprKind::Closure(&Closure { body, .. }) => is_body_identity_function(cx, cx.tcx.hir().body(body)),
-        _ => path_def_id(cx, expr).map_or(false, |id| match_def_path(cx, id, &paths::CONVERT_IDENTITY)),
+        _ => path_def_id(cx, expr).map_or(false, |id| cx.tcx.is_diagnostic_item(sym::convert_identity, id)),
     }
 }
 

clippy_utils/src/macros.rs

@@ -245,7 +245,7 @@ impl<'a> PanicExpn<'a> {
             return None;
         };
         let result = match name {
-            "panic" if arg.span.ctxt() == expr.span.ctxt() => Self::Empty,
+            "panic" if arg.span.eq_ctxt(expr.span) => Self::Empty,
             "panic" | "panic_str" => Self::Str(arg),
             "panic_display" | "panic_cold_display" => {
                 let ExprKind::AddrOf(_, _, e) = &arg.kind else {

clippy_utils/src/paths.rs

@@ -25,17 +25,12 @@ pub const CORE_ITER_COPIED: [&str; 6] = ["core", "iter", "traits", "iterator", "
 pub const CORE_ITER_FILTER: [&str; 6] = ["core", "iter", "traits", "iterator", "Iterator", "filter"];
 pub const CORE_RESULT_OK_METHOD: [&str; 4] = ["core", "result", "Result", "ok"];
 pub const CSTRING_AS_C_STR: [&str; 5] = ["alloc", "ffi", "c_str", "CString", "as_c_str"];
-pub const DEFAULT_TRAIT_METHOD: [&str; 4] = ["core", "default", "Default", "default"];
-pub const DEREF_MUT_TRAIT_METHOD: [&str; 5] = ["core", "ops", "deref", "DerefMut", "deref_mut"];
 #[cfg(feature = "internal")]
 pub const EARLY_CONTEXT: [&str; 2] = ["rustc_lint", "EarlyContext"];
 #[cfg(feature = "internal")]
 pub const EARLY_LINT_PASS: [&str; 3] = ["rustc_lint", "passes", "EarlyLintPass"];
-pub const EXIT: [&str; 3] = ["std", "process", "exit"];
 pub const F32_EPSILON: [&str; 4] = ["core", "f32", "<impl f32>", "EPSILON"];
 pub const F64_EPSILON: [&str; 4] = ["core", "f64", "<impl f64>", "EPSILON"];
-pub const FROM_ITERATOR_METHOD: [&str; 6] = ["core", "iter", "traits", "collect", "FromIterator", "from_iter"];
-pub const FROM_STR_METHOD: [&str; 5] = ["core", "str", "traits", "FromStr", "from_str"];
 #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates
 pub const FUTURES_IO_ASYNCREADEXT: [&str; 3] = ["futures_util", "io", "AsyncReadExt"];
 #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates
@@ -48,8 +43,6 @@ pub const IDENT: [&str; 3] = ["rustc_span", "symbol", "Ident"];
 #[cfg(feature = "internal")]
 pub const IDENT_AS_STR: [&str; 4] = ["rustc_span", "symbol", "Ident", "as_str"];
 pub const INSERT_STR: [&str; 4] = ["alloc", "string", "String", "insert_str"];
-pub const ITER_EMPTY: [&str; 5] = ["core", "iter", "sources", "empty", "Empty"];
-pub const ITER_ONCE: [&str; 5] = ["core", "iter", "sources", "once", "Once"];
 pub const ITERTOOLS_NEXT_TUPLE: [&str; 3] = ["itertools", "Itertools", "next_tuple"];
 #[cfg(feature = "internal")]
 pub const KW_MODULE: [&str; 3] = ["rustc_span", "symbol", "kw"];
@@ -59,10 +52,8 @@ pub const LATE_CONTEXT: [&str; 2] = ["rustc_lint", "LateContext"];
 pub const LATE_LINT_PASS: [&str; 3] = ["rustc_lint", "passes", "LateLintPass"];
 #[cfg(feature = "internal")]
 pub const LINT: [&str; 2] = ["rustc_lint_defs", "Lint"];
-pub const MEM_SWAP: [&str; 3] = ["core", "mem", "swap"];
 #[cfg(feature = "internal")]
 pub const MSRV: [&str; 3] = ["clippy_utils", "msrvs", "Msrv"];
-pub const OPEN_OPTIONS: [&str; 3] = ["std", "fs", "OpenOptions"];
 pub const OS_STRING_AS_OS_STR: [&str; 5] = ["std", "ffi", "os_str", "OsString", "as_os_str"];
 pub const OS_STR_TO_OS_STRING: [&str; 5] = ["std", "ffi", "os_str", "OsStr", "to_os_string"];
 pub const PARKING_LOT_MUTEX_GUARD: [&str; 3] = ["lock_api", "mutex", "MutexGuard"];
@@ -71,28 +62,9 @@ pub const PARKING_LOT_RWLOCK_WRITE_GUARD: [&str; 3] = ["lock_api", "rwlock", "Rw
 pub const PATH_BUF_AS_PATH: [&str; 4] = ["std", "path", "PathBuf", "as_path"];
 pub const PATH_MAIN_SEPARATOR: [&str; 3] = ["std", "path", "MAIN_SEPARATOR"];
 pub const PATH_TO_PATH_BUF: [&str; 4] = ["std", "path", "Path", "to_path_buf"];
-pub const PEEKABLE: [&str; 5] = ["core", "iter", "adapters", "peekable", "Peekable"];
-pub const PERMISSIONS: [&str; 3] = ["std", "fs", "Permissions"];
 #[cfg_attr(not(unix), allow(clippy::invalid_paths))]
 pub const PERMISSIONS_FROM_MODE: [&str; 6] = ["std", "os", "unix", "fs", "PermissionsExt", "from_mode"];
-pub const PTR_COPY: [&str; 3] = ["core", "intrinsics", "copy"];
-pub const PTR_COPY_NONOVERLAPPING: [&str; 3] = ["core", "intrinsics", "copy_nonoverlapping"];
-pub const PTR_EQ: [&str; 3] = ["core", "ptr", "eq"];
-pub const PTR_SLICE_FROM_RAW_PARTS: [&str; 3] = ["core", "ptr", "slice_from_raw_parts"];
-pub const PTR_SLICE_FROM_RAW_PARTS_MUT: [&str; 3] = ["core", "ptr", "slice_from_raw_parts_mut"];
-pub const PTR_SWAP_NONOVERLAPPING: [&str; 3] = ["core", "ptr", "swap_nonoverlapping"];
-pub const PTR_READ: [&str; 3] = ["core", "ptr", "read"];
-pub const PTR_READ_UNALIGNED: [&str; 3] = ["core", "ptr", "read_unaligned"];
-pub const PTR_READ_VOLATILE: [&str; 3] = ["core", "ptr", "read_volatile"];
-pub const PTR_REPLACE: [&str; 3] = ["core", "ptr", "replace"];
-pub const PTR_SWAP: [&str; 3] = ["core", "ptr", "swap"];
-pub const PTR_UNALIGNED_VOLATILE_LOAD: [&str; 3] = ["core", "intrinsics", "unaligned_volatile_load"];
-pub const PTR_UNALIGNED_VOLATILE_STORE: [&str; 3] = ["core", "intrinsics", "unaligned_volatile_store"];
-pub const PTR_WRITE_BYTES: [&str; 3] = ["core", "intrinsics", "write_bytes"];
 pub const PUSH_STR: [&str; 4] = ["alloc", "string", "String", "push_str"];
-pub const RANGE_ARGUMENT_TRAIT: [&str; 3] = ["core", "ops", "RangeBounds"];
-pub const REFCELL_REF: [&str; 3] = ["core", "cell", "Ref"];
-pub const REFCELL_REFMUT: [&str; 3] = ["core", "cell", "RefMut"];
 pub const REGEX_BUILDER_NEW: [&str; 3] = ["regex", "RegexBuilder", "new"];
 pub const REGEX_BYTES_BUILDER_NEW: [&str; 4] = ["regex", "bytes", "RegexBuilder", "new"];
 pub const REGEX_BYTES_NEW: [&str; 4] = ["regex", "bytes", "Regex", "new"];
@@ -101,21 +73,11 @@ pub const REGEX_NEW: [&str; 3] = ["regex", "Regex", "new"];
 pub const REGEX_SET_NEW: [&str; 3] = ["regex", "RegexSet", "new"];
 pub const SERDE_DESERIALIZE: [&str; 3] = ["serde", "de", "Deserialize"];
 pub const SERDE_DE_VISITOR: [&str; 3] = ["serde", "de", "Visitor"];
-pub const SLICE_FROM_RAW_PARTS: [&str; 4] = ["core", "slice", "raw", "from_raw_parts"];
-pub const SLICE_FROM_RAW_PARTS_MUT: [&str; 4] = ["core", "slice", "raw", "from_raw_parts_mut"];
 pub const SLICE_GET: [&str; 4] = ["core", "slice", "<impl [T]>", "get"];
 pub const SLICE_INTO_VEC: [&str; 4] = ["alloc", "slice", "<impl [T]>", "into_vec"];
 pub const SLICE_INTO: [&str; 4] = ["core", "slice", "<impl [T]>", "iter"];
-pub const SLICE_ITER: [&str; 4] = ["core", "slice", "iter", "Iter"];
-pub const STDERR: [&str; 4] = ["std", "io", "stdio", "stderr"];
-pub const STDOUT: [&str; 4] = ["std", "io", "stdio", "stdout"];
-pub const CONVERT_IDENTITY: [&str; 3] = ["core", "convert", "identity"];
-pub const STD_FS_CREATE_DIR: [&str; 3] = ["std", "fs", "create_dir"];
-pub const STD_IO_LINES: [&str; 3] = ["std", "io", "Lines"];
-pub const STD_IO_SEEK: [&str; 3] = ["std", "io", "Seek"];
 pub const STD_IO_SEEK_FROM_CURRENT: [&str; 4] = ["std", "io", "SeekFrom", "Current"];
 pub const STD_IO_SEEKFROM_START: [&str; 4] = ["std", "io", "SeekFrom", "Start"];
-pub const STD_PROCESS_COMMAND: [&str; 3] = ["std", "process", "Command"];
 pub const STRING_AS_MUT_STR: [&str; 4] = ["alloc", "string", "String", "as_mut_str"];
 pub const STRING_AS_STR: [&str; 4] = ["alloc", "string", "String", "as_str"];
 pub const STRING_NEW: [&str; 4] = ["alloc", "string", "String", "new"];
@@ -136,13 +98,10 @@ pub const SYMBOL_TO_IDENT_STRING: [&str; 4] = ["rustc_span", "symbol", "Symbol",
 pub const SYM_MODULE: [&str; 3] = ["rustc_span", "symbol", "sym"];
 #[cfg(feature = "internal")]
 pub const SYNTAX_CONTEXT: [&str; 3] = ["rustc_span", "hygiene", "SyntaxContext"];
-pub const TO_OWNED_METHOD: [&str; 4] = ["alloc", "borrow", "ToOwned", "to_owned"];
-pub const TO_STRING_METHOD: [&str; 4] = ["alloc", "string", "ToString", "to_string"];
 #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates
 pub const TOKIO_IO_ASYNCREADEXT: [&str; 5] = ["tokio", "io", "util", "async_read_ext", "AsyncReadExt"];
 #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates
 pub const TOKIO_IO_ASYNCWRITEEXT: [&str; 5] = ["tokio", "io", "util", "async_write_ext", "AsyncWriteExt"];
-pub const TRY_FROM: [&str; 4] = ["core", "convert", "TryFrom", "try_from"];
 pub const VEC_AS_MUT_SLICE: [&str; 4] = ["alloc", "vec", "Vec", "as_mut_slice"];
 pub const VEC_AS_SLICE: [&str; 4] = ["alloc", "vec", "Vec", "as_slice"];
 pub const VEC_DEQUE_ITER: [&str; 5] = ["alloc", "collections", "vec_deque", "VecDeque", "iter"];
@@ -150,18 +109,10 @@ pub const VEC_FROM_ELEM: [&str; 3] = ["alloc", "vec", "from_elem"];
 pub const VEC_NEW: [&str; 4] = ["alloc", "vec", "Vec", "new"];
 pub const VEC_WITH_CAPACITY: [&str; 4] = ["alloc", "vec", "Vec", "with_capacity"];
 pub const VEC_RESIZE: [&str; 4] = ["alloc", "vec", "Vec", "resize"];
-pub const WEAK_ARC: [&str; 3] = ["alloc", "sync", "Weak"];
-pub const WEAK_RC: [&str; 3] = ["alloc", "rc", "Weak"];
-pub const PTR_NON_NULL: [&str; 4] = ["core", "ptr", "non_null", "NonNull"];
 pub const INSTANT_NOW: [&str; 4] = ["std", "time", "Instant", "now"];
-pub const INSTANT: [&str; 3] = ["std", "time", "Instant"];
 pub const VEC_IS_EMPTY: [&str; 4] = ["alloc", "vec", "Vec", "is_empty"];
 pub const VEC_POP: [&str; 4] = ["alloc", "vec", "Vec", "pop"];
 pub const OPTION_UNWRAP: [&str; 4] = ["core", "option", "Option", "unwrap"];
 pub const OPTION_EXPECT: [&str; 4] = ["core", "option", "Option", "expect"];
-pub const FORMATTER: [&str; 3] = ["core", "fmt", "Formatter"];
-pub const DEBUG_STRUCT: [&str; 4] = ["core", "fmt", "builders", "DebugStruct"];
-pub const ORD_CMP: [&str; 4] = ["core", "cmp", "Ord", "cmp"];
 #[expect(clippy::invalid_paths)] // not sure why it thinks this, it works so
 pub const BOOL_THEN: [&str; 4] = ["core", "bool", "<impl bool>", "then"];
-pub const ARRAY_INTO_ITER: [&str; 4] = ["core", "array", "iter", "IntoIter"];

clippy_utils/src/qualify_min_const_fn.rs

@@ -305,8 +305,8 @@ fn check_terminator<'tcx>(
             Ok(())
         },
         TerminatorKind::SwitchInt { discr, targets: _ } => check_operand(tcx, discr, span, body),
-        TerminatorKind::GeneratorDrop | TerminatorKind::Yield { .. } => {
+        TerminatorKind::CoroutineDrop | TerminatorKind::Yield { .. } => {
-            Err((span, "const fn generators are unstable".into()))
+            Err((span, "const fn coroutines are unstable".into()))
         },
         TerminatorKind::Call {
             func,

clippy_utils/src/ty.rs

@@ -31,7 +31,7 @@ use rustc_trait_selection::traits::{Obligation, ObligationCause};
 use std::assert_matches::debug_assert_matches;
 use std::iter;
 
-use crate::{match_def_path, path_res, paths};
+use crate::{match_def_path, path_res};
 
 mod type_certainty;
 pub use type_certainty::expr_type_is_certain;
@@ -461,10 +461,8 @@ pub fn needs_ordered_drop<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
         else if is_type_lang_item(cx, ty, LangItem::OwnedBox)
             || matches!(
                 get_type_diagnostic_name(cx, ty),
-                Some(sym::HashSet | sym::Rc | sym::Arc | sym::cstring_type)
+                Some(sym::HashSet | sym::Rc | sym::Arc | sym::cstring_type | sym::RcWeak | sym::ArcWeak)
             )
-            || match_type(cx, ty, &paths::WEAK_RC)
-            || match_type(cx, ty, &paths::WEAK_ARC)
         {
             // Check all of the generic arguments.
             if let ty::Adt(_, subs) = ty.kind() {
@@ -1135,7 +1133,7 @@ pub fn make_projection<'tcx>(
         #[cfg(debug_assertions)]
         assert_generic_args_match(tcx, assoc_item.def_id, args);
 
-        Some(tcx.mk_alias_ty(assoc_item.def_id, args))
+        Some(ty::AliasTy::new(tcx, assoc_item.def_id, args))
     }
     helper(
         tcx,

rust-toolchain

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2023-10-06"
+channel = "nightly-2023-10-21"
 components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"]

tests/ui-internal/unnecessary_def_path_hardcoded_path.rs

@@ -11,6 +11,6 @@ fn main() {
     const DEREF_MUT_TRAIT: [&str; 4] = ["core", "ops", "deref", "DerefMut"];
     const DEREF_TRAIT_METHOD: [&str; 5] = ["core", "ops", "deref", "Deref", "deref"];
 
-    // Don't lint, not yet a diagnostic or language item
+    // Don't lint, not a diagnostic or language item
-    const DEREF_MUT_TRAIT_METHOD: [&str; 5] = ["core", "ops", "deref", "DerefMut", "deref_mut"];
+    const OPS_MOD: [&str; 2] = ["core", "ops"];
 }

tests/ui/builtin_type_shadow.stderr

@@ -13,7 +13,7 @@ error[E0308]: mismatched types
 LL | fn foo<u32>(a: u32) -> u32 {
    |        ---             --- expected `u32` because of return type
    |        |
-   |        this type parameter
+   |        expected this type parameter
 LL |     42
    |     ^^ expected type parameter `u32`, found integer
    |

tests/ui/crashes/ice-5238.rs

@@ -1,6 +1,6 @@
 // Regression test for #5238 / https://github.com/rust-lang/rust/pull/69562
 
-#![feature(generators, generator_trait)]
+#![feature(coroutines, coroutine_trait)]
 
 fn main() {
     let _ = || {

tests/ui/crashes/ice-6252.stderr

@@ -31,7 +31,7 @@ LL |     const VAL: T;
    |     ------------ `VAL` from trait
 ...
 LL | impl<N, M> TypeVal<usize> for Multiply<N, M> where N: TypeVal<VAL> {}
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `VAL` in implementation
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `VAL` in implementation
 
 error: aborting due to 3 previous errors
 

tests/ui/implied_bounds_in_impls.fixed

@@ -1,6 +1,5 @@
 #![warn(clippy::implied_bounds_in_impls)]
 #![allow(dead_code)]
-#![feature(return_position_impl_trait_in_trait)]
 
 use std::ops::{Deref, DerefMut};
 

tests/ui/implied_bounds_in_impls.rs

@@ -1,6 +1,5 @@
 #![warn(clippy::implied_bounds_in_impls)]
 #![allow(dead_code)]
-#![feature(return_position_impl_trait_in_trait)]
 
 use std::ops::{Deref, DerefMut};
 

tests/ui/implied_bounds_in_impls.stderr

@@ -1,5 +1,5 @@
 error: this bound is already specified as the supertrait of `DerefMut<Target = T>`
-  --> $DIR/implied_bounds_in_impls.rs:13:36
+  --> $DIR/implied_bounds_in_impls.rs:12:36
    |
 LL | fn deref_derefmut<T>(x: T) -> impl Deref<Target = T> + DerefMut<Target = T> {
    |                                    ^^^^^^^^^^^^^^^^^
@@ -13,7 +13,7 @@ LL + fn deref_derefmut<T>(x: T) -> impl DerefMut<Target = T> {
    |
 
 error: this bound is already specified as the supertrait of `GenericSubtrait<U, W, U>`
-  --> $DIR/implied_bounds_in_impls.rs:30:37
+  --> $DIR/implied_bounds_in_impls.rs:29:37
    |
 LL | fn generics_implied<U, W>() -> impl GenericTrait<W> + GenericSubtrait<U, W, U>
    |                                     ^^^^^^^^^^^^^^^
@@ -25,7 +25,7 @@ LL + fn generics_implied<U, W>() -> impl GenericSubtrait<U, W, U>
    |
 
 error: this bound is already specified as the supertrait of `GenericSubtrait<(), i32, V>`
-  --> $DIR/implied_bounds_in_impls.rs:36:40
+  --> $DIR/implied_bounds_in_impls.rs:35:40
    |
 LL | fn generics_implied_multi<V>() -> impl GenericTrait<i32> + GenericTrait2<V> + GenericSubtrait<(), i32, V> {}
    |                                        ^^^^^^^^^^^^^^^^^
@@ -37,7 +37,7 @@ LL + fn generics_implied_multi<V>() -> impl GenericTrait2<V> + GenericSubtrait<(
    |
 
 error: this bound is already specified as the supertrait of `GenericSubtrait<(), i32, V>`
-  --> $DIR/implied_bounds_in_impls.rs:36:60
+  --> $DIR/implied_bounds_in_impls.rs:35:60
    |
 LL | fn generics_implied_multi<V>() -> impl GenericTrait<i32> + GenericTrait2<V> + GenericSubtrait<(), i32, V> {}
    |                                                            ^^^^^^^^^^^^^^^^
@@ -49,7 +49,7 @@ LL + fn generics_implied_multi<V>() -> impl GenericTrait<i32> + GenericSubtrait<
    |
 
 error: this bound is already specified as the supertrait of `GenericSubtrait<(), T, V>`
-  --> $DIR/implied_bounds_in_impls.rs:38:44
+  --> $DIR/implied_bounds_in_impls.rs:37:44
    |
 LL | fn generics_implied_multi2<T, V>() -> impl GenericTrait<T> + GenericTrait2<V> + GenericSubtrait<(), T, V>
    |                                            ^^^^^^^^^^^^^^^
@@ -61,7 +61,7 @@ LL + fn generics_implied_multi2<T, V>() -> impl GenericTrait2<V> + GenericSubtra
    |
 
 error: this bound is already specified as the supertrait of `GenericSubtrait<(), T, V>`
-  --> $DIR/implied_bounds_in_impls.rs:38:62
+  --> $DIR/implied_bounds_in_impls.rs:37:62
    |
 LL | fn generics_implied_multi2<T, V>() -> impl GenericTrait<T> + GenericTrait2<V> + GenericSubtrait<(), T, V>
    |                                                              ^^^^^^^^^^^^^^^^
@@ -73,7 +73,7 @@ LL + fn generics_implied_multi2<T, V>() -> impl GenericTrait<T> + GenericSubtrai
    |
 
 error: this bound is already specified as the supertrait of `GenericSubtrait<(), i32, ()>`
-  --> $DIR/implied_bounds_in_impls.rs:48:28
+  --> $DIR/implied_bounds_in_impls.rs:47:28
    |
 LL | fn generics_same() -> impl GenericTrait<i32> + GenericSubtrait<(), i32, ()> {}
    |                            ^^^^^^^^^^^^^^^^^
@@ -85,7 +85,7 @@ LL + fn generics_same() -> impl GenericSubtrait<(), i32, ()> {}
    |
 
 error: this bound is already specified as the supertrait of `DerefMut<Target = u8>`
-  --> $DIR/implied_bounds_in_impls.rs:52:20
+  --> $DIR/implied_bounds_in_impls.rs:51:20
    |
 LL |     fn f() -> impl Deref + DerefMut<Target = u8>;
    |                    ^^^^^
@@ -97,7 +97,7 @@ LL +     fn f() -> impl DerefMut<Target = u8>;
    |
 
 error: this bound is already specified as the supertrait of `DerefMut<Target = u8>`
-  --> $DIR/implied_bounds_in_impls.rs:57:20
+  --> $DIR/implied_bounds_in_impls.rs:56:20
    |
 LL |     fn f() -> impl Deref + DerefMut<Target = u8> {
    |                    ^^^^^
@@ -109,7 +109,7 @@ LL +     fn f() -> impl DerefMut<Target = u8> {
    |
 
 error: this bound is already specified as the supertrait of `DerefMut<Target = u8>`
-  --> $DIR/implied_bounds_in_impls.rs:63:20
+  --> $DIR/implied_bounds_in_impls.rs:62:20
    |
 LL |     fn f() -> impl Deref + DerefMut<Target = u8> {
    |                    ^^^^^
@@ -121,7 +121,7 @@ LL +     fn f() -> impl DerefMut<Target = u8> {
    |
 
 error: this bound is already specified as the supertrait of `PartialOrd`
-  --> $DIR/implied_bounds_in_impls.rs:74:41
+  --> $DIR/implied_bounds_in_impls.rs:73:41
    |
 LL |     fn default_generic_param1() -> impl PartialEq + PartialOrd + Debug {}
    |                                         ^^^^^^^^^
@@ -133,7 +133,7 @@ LL +     fn default_generic_param1() -> impl PartialOrd + Debug {}
    |
 
 error: this bound is already specified as the supertrait of `PartialOrd`
-  --> $DIR/implied_bounds_in_impls.rs:75:54
+  --> $DIR/implied_bounds_in_impls.rs:74:54
    |
 LL |     fn default_generic_param2() -> impl PartialOrd + PartialEq + Debug {}
    |                                                      ^^^^^^^^^
@@ -145,7 +145,7 @@ LL +     fn default_generic_param2() -> impl PartialOrd + Debug {}
    |
 
 error: this bound is already specified as the supertrait of `DoubleEndedIterator`
-  --> $DIR/implied_bounds_in_impls.rs:88:26
+  --> $DIR/implied_bounds_in_impls.rs:87:26
    |
 LL |     fn my_iter() -> impl Iterator<Item = u32> + DoubleEndedIterator {
    |                          ^^^^^^^^^^^^^^^^^^^^
@@ -157,7 +157,7 @@ LL +     fn my_iter() -> impl DoubleEndedIterator<Item = u32> {
    |
 
 error: this bound is already specified as the supertrait of `Copy`
-  --> $DIR/implied_bounds_in_impls.rs:93:27
+  --> $DIR/implied_bounds_in_impls.rs:92:27
    |
 LL |     fn f() -> impl Copy + Clone {
    |                           ^^^^^
@@ -169,7 +169,7 @@ LL +     fn f() -> impl Copy {
    |
 
 error: this bound is already specified as the supertrait of `Trait2<i32>`
-  --> $DIR/implied_bounds_in_impls.rs:107:21
+  --> $DIR/implied_bounds_in_impls.rs:106:21
    |
 LL |     fn f2() -> impl Trait1<i32, U = i64> + Trait2<i32> {}
    |                     ^^^^^^^^^^^^^^^^^^^^
@@ -181,7 +181,7 @@ LL +     fn f2() -> impl Trait2<i32, U = i64> {}
    |
 
 error: this bound is already specified as the supertrait of `Trait4<i8, X = i32>`
-  --> $DIR/implied_bounds_in_impls.rs:122:21
+  --> $DIR/implied_bounds_in_impls.rs:121:21
    |
 LL |     fn f3() -> impl Trait3<i8, i16, i64, X = i32, Y = i128> + Trait4<i8, X = i32> {}
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/ui/large_futures.fixed

@@ -1,4 +1,4 @@
-#![feature(generators)]
+#![feature(coroutines)]
 #![warn(clippy::large_futures)]
 #![allow(clippy::never_loop)]
 #![allow(clippy::future_not_send)]

tests/ui/large_futures.rs

@@ -1,4 +1,4 @@
-#![feature(generators)]
+#![feature(coroutines)]
 #![warn(clippy::large_futures)]
 #![allow(clippy::never_loop)]
 #![allow(clippy::future_not_send)]

tests/ui/unused_async.rs

@@ -1,5 +1,4 @@
 #![warn(clippy::unused_async)]
-#![feature(async_fn_in_trait)]
 #![allow(incomplete_features)]
 
 use std::future::Future;

tests/ui/unused_async.stderr

@@ -1,5 +1,5 @@
 error: unused `async` for function with no await statements
-  --> $DIR/unused_async.rs:13:5
+  --> $DIR/unused_async.rs:12:5
    |
 LL | /     async fn async_block_await() {
 LL | |
@@ -11,7 +11,7 @@ LL | |     }
    |
    = help: consider removing the `async` from this function
 note: `await` used in an async block, which does not require the enclosing function to be `async`
-  --> $DIR/unused_async.rs:16:23
+  --> $DIR/unused_async.rs:15:23
    |
 LL |             ready(()).await;
    |                       ^^^^^
@@ -19,7 +19,7 @@ LL |             ready(()).await;
    = help: to override `-D warnings` add `#[allow(clippy::unused_async)]`
 
 error: unused `async` for function with no await statements
-  --> $DIR/unused_async.rs:46:5
+  --> $DIR/unused_async.rs:45:5
    |
 LL |     async fn f3() {}
    |     ^^^^^^^^^^^^^^^^
@@ -27,7 +27,7 @@ LL |     async fn f3() {}
    = help: consider removing the `async` from this function
 
 error: unused `async` for function with no await statements
-  --> $DIR/unused_async.rs:59:1
+  --> $DIR/unused_async.rs:58:1
    |
 LL | / async fn foo() -> i32 {
 LL | |
@@ -38,7 +38,7 @@ LL | | }
    = help: consider removing the `async` from this function
 
 error: unused `async` for function with no await statements
-  --> $DIR/unused_async.rs:71:5
+  --> $DIR/unused_async.rs:70:5
    |
 LL | /     async fn unused(&self) -> i32 {
 LL | |