Sync `mut_visit` function names with immut `visit` ones (s/noop_visit/walk/)

9 files changed, 226 insertions, 235 deletions

diff --git a/compiler/rustc_ast/src/mut_visit.rs b/compiler/rustc_ast/src/mut_visit.rs
index 2d749bd8fd4..56dd6663bb6 100644
--- a/compiler/rustc_ast/src/mut_visit.rs
+++ b/compiler/rustc_ast/src/mut_visit.rs
@@ -36,7 +36,7 @@ impl<A: Array> ExpectOne<A> for SmallVec<A> {
 }
 
 pub trait NoopVisitItemKind {
-    fn noop_visit(
+    fn walk(
         &mut self,
         ctxt: Option<AssocCtxt>,
         ident: Ident,
@@ -86,35 +86,35 @@ pub trait MutVisitor: Sized {
     // forget to add handling for it.
 
     fn visit_crate(&mut self, c: &mut Crate) {
-        noop_visit_crate(c, self)
+        walk_crate(c, self)
     }
 
     fn visit_meta_list_item(&mut self, list_item: &mut NestedMetaItem) {
-        noop_visit_meta_list_item(list_item, self);
+        walk_meta_list_item(list_item, self);
     }
 
     fn visit_meta_item(&mut self, meta_item: &mut MetaItem) {
-        noop_visit_meta_item(meta_item, self);
+        walk_meta_item(meta_item, self);
     }
 
     fn visit_use_tree(&mut self, use_tree: &mut UseTree) {
-        noop_visit_use_tree(use_tree, self);
+        walk_use_tree(use_tree, self);
     }
 
     fn flat_map_foreign_item(&mut self, ni: P<ForeignItem>) -> SmallVec<[P<ForeignItem>; 1]> {
-        noop_flat_map_item(ni, None, self)
+        walk_flat_map_item(ni, None, self)
     }
 
     fn flat_map_item(&mut self, i: P<Item>) -> SmallVec<[P<Item>; 1]> {
-        noop_flat_map_item(i, None, self)
+        walk_flat_map_item(i, None, self)
     }
 
     fn visit_fn_header(&mut self, header: &mut FnHeader) {
-        noop_visit_fn_header(header, self);
+        walk_fn_header(header, self);
     }
 
     fn flat_map_field_def(&mut self, fd: FieldDef) -> SmallVec<[FieldDef; 1]> {
-        noop_flat_map_field_def(fd, self)
+        walk_flat_map_field_def(fd, self)
     }
 
     fn flat_map_assoc_item(
@@ -122,48 +122,48 @@ pub trait MutVisitor: Sized {
         i: P<AssocItem>,
         ctxt: AssocCtxt,
     ) -> SmallVec<[P<AssocItem>; 1]> {
-        noop_flat_map_item(i, Some(ctxt), self)
+        walk_flat_map_item(i, Some(ctxt), self)
     }
 
     fn visit_fn_decl(&mut self, d: &mut P<FnDecl>) {
-        noop_visit_fn_decl(d, self);
+        walk_fn_decl(d, self);
     }
 
     /// `Span` and `NodeId` are mutated at the caller site.
     fn visit_fn(&mut self, fk: FnKind<'_>, _: Span, _: NodeId) {
-        noop_visit_fn(fk, self)
+        walk_fn(fk, self)
     }
 
     fn visit_coroutine_kind(&mut self, a: &mut CoroutineKind) {
-        noop_visit_coroutine_kind(a, self);
+        walk_coroutine_kind(a, self);
     }
 
     fn visit_closure_binder(&mut self, b: &mut ClosureBinder) {
-        noop_visit_closure_binder(b, self);
+        walk_closure_binder(b, self);
     }
 
     fn visit_block(&mut self, b: &mut P<Block>) {
-        noop_visit_block(b, self);
+        walk_block(b, self);
     }
 
     fn flat_map_stmt(&mut self, s: Stmt) -> SmallVec<[Stmt; 1]> {
-        noop_flat_map_stmt(s, self)
+        walk_flat_map_stmt(s, self)
     }
 
     fn flat_map_arm(&mut self, arm: Arm) -> SmallVec<[Arm; 1]> {
-        noop_flat_map_arm(arm, self)
+        walk_flat_map_arm(arm, self)
     }
 
     fn visit_pat(&mut self, p: &mut P<Pat>) {
-        noop_visit_pat(p, self);
+        walk_pat(p, self);
     }
 
     fn visit_anon_const(&mut self, c: &mut AnonConst) {
-        noop_visit_anon_const(c, self);
+        walk_anon_const(c, self);
     }
 
     fn visit_expr(&mut self, e: &mut P<Expr>) {
-        noop_visit_expr(e, self);
+        walk_expr(e, self);
     }
 
     /// This method is a hack to workaround unstable of `stmt_expr_attributes`.
@@ -177,127 +177,127 @@ pub trait MutVisitor: Sized {
     }
 
     fn visit_generic_arg(&mut self, arg: &mut GenericArg) {
-        noop_visit_generic_arg(arg, self);
+        walk_generic_arg(arg, self);
     }
 
     fn visit_ty(&mut self, t: &mut P<Ty>) {
-        noop_visit_ty(t, self);
+        walk_ty(t, self);
     }
 
     fn visit_lifetime(&mut self, l: &mut Lifetime) {
-        noop_visit_lifetime(l, self);
+        walk_lifetime(l, self);
     }
 
     fn visit_assoc_item_constraint(&mut self, c: &mut AssocItemConstraint) {
-        noop_visit_assoc_item_constraint(c, self);
+        walk_assoc_item_constraint(c, self);
     }
 
     fn visit_foreign_mod(&mut self, nm: &mut ForeignMod) {
-        noop_visit_foreign_mod(nm, self);
+        walk_foreign_mod(nm, self);
     }
 
     fn flat_map_variant(&mut self, v: Variant) -> SmallVec<[Variant; 1]> {
-        noop_flat_map_variant(v, self)
+        walk_flat_map_variant(v, self)
     }
 
     fn visit_ident(&mut self, i: &mut Ident) {
-        noop_visit_ident(i, self);
+        walk_ident(i, self);
     }
 
     fn visit_path(&mut self, p: &mut Path) {
-        noop_visit_path(p, self);
+        walk_path(self, p);
     }
 
     fn visit_path_segment(&mut self, p: &mut PathSegment) {
-        noop_visit_path_segment(p, self)
+        walk_path_segment(self, p)
     }
 
     fn visit_qself(&mut self, qs: &mut Option<P<QSelf>>) {
-        noop_visit_qself(qs, self);
+        walk_qself(qs, self);
     }
 
     fn visit_generic_args(&mut self, p: &mut GenericArgs) {
-        noop_visit_generic_args(p, self);
+        walk_generic_args(p, self);
     }
 
     fn visit_angle_bracketed_parameter_data(&mut self, p: &mut AngleBracketedArgs) {
-        noop_visit_angle_bracketed_parameter_data(p, self);
+        walk_angle_bracketed_parameter_data(p, self);
     }
 
     fn visit_parenthesized_parameter_data(&mut self, p: &mut ParenthesizedArgs) {
-        noop_visit_parenthesized_parameter_data(p, self);
+        walk_parenthesized_parameter_data(p, self);
     }
 
     fn visit_local(&mut self, l: &mut P<Local>) {
-        noop_visit_local(l, self);
+        walk_local(l, self);
     }
 
     fn visit_mac_call(&mut self, mac: &mut MacCall) {
-        noop_visit_mac(mac, self);
+        walk_mac(mac, self);
     }
 
     fn visit_macro_def(&mut self, def: &mut MacroDef) {
-        noop_visit_macro_def(def, self);
+        walk_macro_def(def, self);
     }
 
     fn visit_label(&mut self, label: &mut Label) {
-        noop_visit_label(label, self);
+        walk_label(label, self);
     }
 
     fn visit_attribute(&mut self, at: &mut Attribute) {
-        noop_visit_attribute(at, self);
+        walk_attribute(at, self);
     }
 
     fn flat_map_param(&mut self, param: Param) -> SmallVec<[Param; 1]> {
-        noop_flat_map_param(param, self)
+        walk_flat_map_param(param, self)
     }
 
     fn visit_generics(&mut self, generics: &mut Generics) {
-        noop_visit_generics(generics, self);
+        walk_generics(generics, self);
     }
 
     fn visit_trait_ref(&mut self, tr: &mut TraitRef) {
-        noop_visit_trait_ref(tr, self);
+        walk_trait_ref(tr, self);
     }
 
     fn visit_poly_trait_ref(&mut self, p: &mut PolyTraitRef) {
-        noop_visit_poly_trait_ref(p, self);
+        walk_poly_trait_ref(p, self);
     }
 
     fn visit_variant_data(&mut self, vdata: &mut VariantData) {
-        noop_visit_variant_data(vdata, self);
+        walk_variant_data(vdata, self);
     }
 
     fn flat_map_generic_param(&mut self, param: GenericParam) -> SmallVec<[GenericParam; 1]> {
-        noop_flat_map_generic_param(param, self)
+        walk_flat_map_generic_param(param, self)
     }
 
     fn visit_param_bound(&mut self, tpb: &mut GenericBound, _ctxt: BoundKind) {
-        noop_visit_param_bound(tpb, self);
+        walk_param_bound(tpb, self);
     }
 
     fn visit_precise_capturing_arg(&mut self, arg: &mut PreciseCapturingArg) {
-        noop_visit_precise_capturing_arg(arg, self);
+        walk_precise_capturing_arg(arg, self);
     }
 
     fn visit_mt(&mut self, mt: &mut MutTy) {
-        noop_visit_mt(mt, self);
+        walk_mt(mt, self);
     }
 
     fn flat_map_expr_field(&mut self, f: ExprField) -> SmallVec<[ExprField; 1]> {
-        noop_flat_map_expr_field(f, self)
+        walk_flat_map_expr_field(f, self)
     }
 
     fn visit_where_clause(&mut self, where_clause: &mut WhereClause) {
-        noop_visit_where_clause(where_clause, self);
+        walk_where_clause(where_clause, self);
     }
 
     fn visit_where_predicate(&mut self, where_predicate: &mut WherePredicate) {
-        noop_visit_where_predicate(where_predicate, self);
+        walk_where_predicate(where_predicate, self);
     }
 
     fn visit_vis(&mut self, vis: &mut Visibility) {
-        noop_visit_vis(vis, self);
+        walk_vis(vis, self);
     }
 
     fn visit_id(&mut self, _id: &mut NodeId) {
@@ -309,23 +309,23 @@ pub trait MutVisitor: Sized {
     }
 
     fn flat_map_pat_field(&mut self, fp: PatField) -> SmallVec<[PatField; 1]> {
-        noop_flat_map_pat_field(fp, self)
+        walk_flat_map_pat_field(fp, self)
     }
 
     fn visit_inline_asm(&mut self, asm: &mut InlineAsm) {
-        noop_visit_inline_asm(asm, self)
+        walk_inline_asm(asm, self)
     }
 
     fn visit_inline_asm_sym(&mut self, sym: &mut InlineAsmSym) {
-        noop_visit_inline_asm_sym(sym, self)
+        walk_inline_asm_sym(sym, self)
     }
 
     fn visit_format_args(&mut self, fmt: &mut FormatArgs) {
-        noop_visit_format_args(fmt, self)
+        walk_format_args(fmt, self)
     }
 
     fn visit_capture_by(&mut self, capture_by: &mut CaptureBy) {
-        noop_visit_capture_by(capture_by, self)
+        walk_capture_by(capture_by, self)
     }
 }
 
@@ -422,7 +422,7 @@ pub fn visit_delim_span<T: MutVisitor>(DelimSpan { open, close }: &mut DelimSpan
     vis.visit_span(close);
 }
 
-pub fn noop_flat_map_pat_field<T: MutVisitor>(
+pub fn walk_flat_map_pat_field<T: MutVisitor>(
     mut fp: PatField,
     vis: &mut T,
 ) -> SmallVec<[PatField; 1]> {
@@ -435,7 +435,7 @@ pub fn noop_flat_map_pat_field<T: MutVisitor>(
     smallvec![fp]
 }
 
-fn noop_visit_use_tree<T: MutVisitor>(use_tree: &mut UseTree, vis: &mut T) {
+fn walk_use_tree<T: MutVisitor>(use_tree: &mut UseTree, vis: &mut T) {
     let UseTree { prefix, kind, span } = use_tree;
     vis.visit_path(prefix);
     match kind {
@@ -452,7 +452,7 @@ fn noop_visit_use_tree<T: MutVisitor>(use_tree: &mut UseTree, vis: &mut T) {
     vis.visit_span(span);
 }
 
-pub fn noop_flat_map_arm<T: MutVisitor>(mut arm: Arm, vis: &mut T) -> SmallVec<[Arm; 1]> {
+pub fn walk_flat_map_arm<T: MutVisitor>(mut arm: Arm, vis: &mut T) -> SmallVec<[Arm; 1]> {
     let Arm { attrs, pat, guard, body, span, id, is_placeholder: _ } = &mut arm;
     vis.visit_id(id);
     visit_attrs(attrs, vis);
@@ -463,7 +463,7 @@ pub fn noop_flat_map_arm<T: MutVisitor>(mut arm: Arm, vis: &mut T) -> SmallVec<[
     smallvec![arm]
 }
 
-fn noop_visit_assoc_item_constraint<T: MutVisitor>(
+fn walk_assoc_item_constraint<T: MutVisitor>(
     AssocItemConstraint { id, ident, gen_args, kind, span }: &mut AssocItemConstraint,
     vis: &mut T,
 ) {
@@ -482,7 +482,7 @@ fn noop_visit_assoc_item_constraint<T: MutVisitor>(
     vis.visit_span(span);
 }
 
-pub fn noop_visit_ty<T: MutVisitor>(ty: &mut P<Ty>, vis: &mut T) {
+pub fn walk_ty<T: MutVisitor>(ty: &mut P<Ty>, vis: &mut T) {
     let Ty { id, kind, span, tokens } = ty.deref_mut();
     vis.visit_id(id);
     match kind {
@@ -534,13 +534,13 @@ pub fn noop_visit_ty<T: MutVisitor>(ty: &mut P<Ty>, vis: &mut T) {
     vis.visit_span(span);
 }
 
-fn noop_visit_foreign_mod<T: MutVisitor>(foreign_mod: &mut ForeignMod, vis: &mut T) {
+fn walk_foreign_mod<T: MutVisitor>(foreign_mod: &mut ForeignMod, vis: &mut T) {
     let ForeignMod { safety, abi: _, items } = foreign_mod;
     visit_safety(safety, vis);
     items.flat_map_in_place(|item| vis.flat_map_foreign_item(item));
 }
 
-pub fn noop_flat_map_variant<T: MutVisitor>(
+pub fn walk_flat_map_variant<T: MutVisitor>(
     mut variant: Variant,
     visitor: &mut T,
 ) -> SmallVec<[Variant; 1]> {
@@ -555,18 +555,18 @@ pub fn noop_flat_map_variant<T: MutVisitor>(
     smallvec![variant]
 }
 
-fn noop_visit_ident<T: MutVisitor>(Ident { name: _, span }: &mut Ident, vis: &mut T) {
+fn walk_ident<T: MutVisitor>(Ident { name: _, span }: &mut Ident, vis: &mut T) {
     vis.visit_span(span);
 }
 
-fn noop_visit_path_segment<T: MutVisitor>(segment: &mut PathSegment, vis: &mut T) {
+fn walk_path_segment<T: MutVisitor>(vis: &mut T, segment: &mut PathSegment) {
     let PathSegment { ident, id, args } = segment;
     vis.visit_id(id);
     vis.visit_ident(ident);
     visit_opt(args, |args| vis.visit_generic_args(args));
 }
 
-fn noop_visit_path<T: MutVisitor>(Path { segments, span, tokens }: &mut Path, vis: &mut T) {
+fn walk_path<T: MutVisitor>(vis: &mut T, Path { segments, span, tokens }: &mut Path) {
     for segment in segments {
         vis.visit_path_segment(segment);
     }
@@ -574,7 +574,7 @@ fn noop_visit_path<T: MutVisitor>(Path { segments, span, tokens }: &mut Path, vi
     vis.visit_span(span);
 }
 
-fn noop_visit_qself<T: MutVisitor>(qself: &mut Option<P<QSelf>>, vis: &mut T) {
+fn walk_qself<T: MutVisitor>(qself: &mut Option<P<QSelf>>, vis: &mut T) {
     visit_opt(qself, |qself| {
         let QSelf { ty, path_span, position: _ } = &mut **qself;
         vis.visit_ty(ty);
@@ -582,7 +582,7 @@ fn noop_visit_qself<T: MutVisitor>(qself: &mut Option<P<QSelf>>, vis: &mut T) {
     })
 }
 
-fn noop_visit_generic_args<T: MutVisitor>(generic_args: &mut GenericArgs, vis: &mut T) {
+fn walk_generic_args<T: MutVisitor>(generic_args: &mut GenericArgs, vis: &mut T) {
     match generic_args {
         GenericArgs::AngleBracketed(data) => vis.visit_angle_bracketed_parameter_data(data),
         GenericArgs::Parenthesized(data) => vis.visit_parenthesized_parameter_data(data),
@@ -590,7 +590,7 @@ fn noop_visit_generic_args<T: MutVisitor>(generic_args: &mut GenericArgs, vis: &
     }
 }
 
-fn noop_visit_generic_arg<T: MutVisitor>(arg: &mut GenericArg, vis: &mut T) {
+fn walk_generic_arg<T: MutVisitor>(arg: &mut GenericArg, vis: &mut T) {
     match arg {
         GenericArg::Lifetime(lt) => vis.visit_lifetime(lt),
         GenericArg::Type(ty) => vis.visit_ty(ty),
@@ -598,10 +598,7 @@ fn noop_visit_generic_arg<T: MutVisitor>(arg: &mut GenericArg, vis: &mut T) {
     }
 }
 
-fn noop_visit_angle_bracketed_parameter_data<T: MutVisitor>(
-    data: &mut AngleBracketedArgs,
-    vis: &mut T,
-) {
+fn walk_angle_bracketed_parameter_data<T: MutVisitor>(data: &mut AngleBracketedArgs, vis: &mut T) {
     let AngleBracketedArgs { args, span } = data;
     visit_thin_vec(args, |arg| match arg {
         AngleBracketedArg::Arg(arg) => vis.visit_generic_arg(arg),
@@ -610,18 +607,15 @@ fn noop_visit_angle_bracketed_parameter_data<T: MutVisitor>(
     vis.visit_span(span);
 }
 
-fn noop_visit_parenthesized_parameter_data<T: MutVisitor>(
-    args: &mut ParenthesizedArgs,
-    vis: &mut T,
-) {
+fn walk_parenthesized_parameter_data<T: MutVisitor>(args: &mut ParenthesizedArgs, vis: &mut T) {
     let ParenthesizedArgs { inputs, output, span, inputs_span } = args;
     visit_thin_vec(inputs, |input| vis.visit_ty(input));
-    noop_visit_fn_ret_ty(output, vis);
+    walk_fn_ret_ty(output, vis);
     vis.visit_span(span);
     vis.visit_span(inputs_span);
 }
 
-fn noop_visit_local<T: MutVisitor>(local: &mut P<Local>, vis: &mut T) {
+fn walk_local<T: MutVisitor>(local: &mut P<Local>, vis: &mut T) {
     let Local { id, pat, ty, kind, span, colon_sp, attrs, tokens } = local.deref_mut();
     vis.visit_id(id);
     visit_attrs(attrs, vis);
@@ -642,7 +636,7 @@ fn noop_visit_local<T: MutVisitor>(local: &mut P<Local>, vis: &mut T) {
     vis.visit_span(span);
 }
 
-fn noop_visit_attribute<T: MutVisitor>(attr: &mut Attribute, vis: &mut T) {
+fn walk_attribute<T: MutVisitor>(attr: &mut Attribute, vis: &mut T) {
     let Attribute { kind, id: _, style: _, span } = attr;
     match kind {
         AttrKind::Normal(normal) => {
@@ -660,25 +654,25 @@ fn noop_visit_attribute<T: MutVisitor>(attr: &mut Attribute, vis: &mut T) {
     vis.visit_span(span);
 }
 
-fn noop_visit_mac<T: MutVisitor>(mac: &mut MacCall, vis: &mut T) {
+fn walk_mac<T: MutVisitor>(mac: &mut MacCall, vis: &mut T) {
     let MacCall { path, args } = mac;
     vis.visit_path(path);
     visit_delim_args(args, vis);
 }
 
-fn noop_visit_macro_def<T: MutVisitor>(macro_def: &mut MacroDef, vis: &mut T) {
+fn walk_macro_def<T: MutVisitor>(macro_def: &mut MacroDef, vis: &mut T) {
     let MacroDef { body, macro_rules: _ } = macro_def;
     visit_delim_args(body, vis);
 }
 
-fn noop_visit_meta_list_item<T: MutVisitor>(li: &mut NestedMetaItem, vis: &mut T) {
+fn walk_meta_list_item<T: MutVisitor>(li: &mut NestedMetaItem, vis: &mut T) {
     match li {
         NestedMetaItem::MetaItem(mi) => vis.visit_meta_item(mi),
         NestedMetaItem::Lit(_lit) => {}
     }
 }
 
-fn noop_visit_meta_item<T: MutVisitor>(mi: &mut MetaItem, vis: &mut T) {
+fn walk_meta_item<T: MutVisitor>(mi: &mut MetaItem, vis: &mut T) {
     let MetaItem { unsafety: _, path: _, kind, span } = mi;
     match kind {
         MetaItemKind::Word => {}
@@ -688,7 +682,7 @@ fn noop_visit_meta_item<T: MutVisitor>(mi: &mut MetaItem, vis: &mut T) {
     vis.visit_span(span);
 }
 
-pub fn noop_flat_map_param<T: MutVisitor>(mut param: Param, vis: &mut T) -> SmallVec<[Param; 1]> {
+pub fn walk_flat_map_param<T: MutVisitor>(mut param: Param, vis: &mut T) -> SmallVec<[Param; 1]> {
     let Param { attrs, id, pat, span, ty, is_placeholder: _ } = &mut param;
     vis.visit_id(id);
     visit_attrs(attrs, vis);
@@ -873,7 +867,7 @@ fn visit_constness<T: MutVisitor>(constness: &mut Const, vis: &mut T) {
     }
 }
 
-fn noop_visit_closure_binder<T: MutVisitor>(binder: &mut ClosureBinder, vis: &mut T) {
+fn walk_closure_binder<T: MutVisitor>(binder: &mut ClosureBinder, vis: &mut T) {
     match binder {
         ClosureBinder::NotPresent => {}
         ClosureBinder::For { span: _, generic_params } => {
@@ -882,7 +876,7 @@ fn noop_visit_closure_binder<T: MutVisitor>(binder: &mut ClosureBinder, vis: &mu
     }
 }
 
-fn noop_visit_coroutine_kind<T: MutVisitor>(coroutine_kind: &mut CoroutineKind, vis: &mut T) {
+fn walk_coroutine_kind<T: MutVisitor>(coroutine_kind: &mut CoroutineKind, vis: &mut T) {
     match coroutine_kind {
         CoroutineKind::Async { span, closure_id, return_impl_trait_id }
         | CoroutineKind::Gen { span, closure_id, return_impl_trait_id }
@@ -894,7 +888,7 @@ fn noop_visit_coroutine_kind<T: MutVisitor>(coroutine_kind: &mut CoroutineKind,
     }
 }
 
-fn noop_visit_fn<T: MutVisitor>(kind: FnKind<'_>, vis: &mut T) {
+fn walk_fn<T: MutVisitor>(kind: FnKind<'_>, vis: &mut T) {
     match kind {
         FnKind::Fn(_ctxt, _ident, FnSig { header, decl, span }, generics, body) => {
             // Identifier and visibility are visited as a part of the item.
@@ -914,23 +908,23 @@ fn noop_visit_fn<T: MutVisitor>(kind: FnKind<'_>, vis: &mut T) {
     }
 }
 
-fn noop_visit_fn_decl<T: MutVisitor>(decl: &mut P<FnDecl>, vis: &mut T) {
+fn walk_fn_decl<T: MutVisitor>(decl: &mut P<FnDecl>, vis: &mut T) {
     let FnDecl { inputs, output } = decl.deref_mut();
     inputs.flat_map_in_place(|param| vis.flat_map_param(param));
-    noop_visit_fn_ret_ty(output, vis);
+    walk_fn_ret_ty(output, vis);
 }
 
-fn noop_visit_fn_ret_ty<T: MutVisitor>(fn_ret_ty: &mut FnRetTy, vis: &mut T) {
+fn walk_fn_ret_ty<T: MutVisitor>(fn_ret_ty: &mut FnRetTy, vis: &mut T) {
     match fn_ret_ty {
         FnRetTy::Default(span) => vis.visit_span(span),
         FnRetTy::Ty(ty) => vis.visit_ty(ty),
     }
 }
 
-fn noop_visit_param_bound<T: MutVisitor>(pb: &mut GenericBound, vis: &mut T) {
+fn walk_param_bound<T: MutVisitor>(pb: &mut GenericBound, vis: &mut T) {
     match pb {
         GenericBound::Trait(ty, _modifier) => vis.visit_poly_trait_ref(ty),
-        GenericBound::Outlives(lifetime) => noop_visit_lifetime(lifetime, vis),
+        GenericBound::Outlives(lifetime) => walk_lifetime(lifetime, vis),
         GenericBound::Use(args, span) => {
             for arg in args {
                 vis.visit_precise_capturing_arg(arg);
@@ -940,7 +934,7 @@ fn noop_visit_param_bound<T: MutVisitor>(pb: &mut GenericBound, vis: &mut T) {
     }
 }
 
-fn noop_visit_precise_capturing_arg<T: MutVisitor>(arg: &mut PreciseCapturingArg, vis: &mut T) {
+fn walk_precise_capturing_arg<T: MutVisitor>(arg: &mut PreciseCapturingArg, vis: &mut T) {
     match arg {
         PreciseCapturingArg::Lifetime(lt) => {
             vis.visit_lifetime(lt);
@@ -952,7 +946,7 @@ fn noop_visit_precise_capturing_arg<T: MutVisitor>(arg: &mut PreciseCapturingArg
     }
 }
 
-pub fn noop_flat_map_generic_param<T: MutVisitor>(
+pub fn walk_flat_map_generic_param<T: MutVisitor>(
     mut param: GenericParam,
     vis: &mut T,
 ) -> SmallVec<[GenericParam; 1]> {
@@ -977,23 +971,23 @@ pub fn noop_flat_map_generic_param<T: MutVisitor>(
     smallvec![param]
 }
 
-fn noop_visit_label<T: MutVisitor>(Label { ident }: &mut Label, vis: &mut T) {
+fn walk_label<T: MutVisitor>(Label { ident }: &mut Label, vis: &mut T) {
     vis.visit_ident(ident);
 }
 
-fn noop_visit_lifetime<T: MutVisitor>(Lifetime { id, ident }: &mut Lifetime, vis: &mut T) {
+fn walk_lifetime<T: MutVisitor>(Lifetime { id, ident }: &mut Lifetime, vis: &mut T) {
     vis.visit_id(id);
     vis.visit_ident(ident);
 }
 
-fn noop_visit_generics<T: MutVisitor>(generics: &mut Generics, vis: &mut T) {
+fn walk_generics<T: MutVisitor>(generics: &mut Generics, vis: &mut T) {
     let Generics { params, where_clause, span } = generics;
     params.flat_map_in_place(|param| vis.flat_map_generic_param(param));
     vis.visit_where_clause(where_clause);
     vis.visit_span(span);
 }
 
-fn noop_visit_ty_alias_where_clauses<T: MutVisitor>(tawcs: &mut TyAliasWhereClauses, vis: &mut T) {
+fn walk_ty_alias_where_clauses<T: MutVisitor>(tawcs: &mut TyAliasWhereClauses, vis: &mut T) {
     let TyAliasWhereClauses { before, after, split: _ } = tawcs;
     let TyAliasWhereClause { has_where_token: _, span: span_before } = before;
     let TyAliasWhereClause { has_where_token: _, span: span_after } = after;
@@ -1001,13 +995,13 @@ fn noop_visit_ty_alias_where_clauses<T: MutVisitor>(tawcs: &mut TyAliasWhereClau
     vis.visit_span(span_after);
 }
 
-fn noop_visit_where_clause<T: MutVisitor>(wc: &mut WhereClause, vis: &mut T) {
+fn walk_where_clause<T: MutVisitor>(wc: &mut WhereClause, vis: &mut T) {
     let WhereClause { has_where_token: _, predicates, span } = wc;
     visit_thin_vec(predicates, |predicate| vis.visit_where_predicate(predicate));
     vis.visit_span(span);
 }
 
-fn noop_visit_where_predicate<T: MutVisitor>(pred: &mut WherePredicate, vis: &mut T) {
+fn walk_where_predicate<T: MutVisitor>(pred: &mut WherePredicate, vis: &mut T) {
     match pred {
         WherePredicate::BoundPredicate(bp) => {
             let WhereBoundPredicate { span, bound_generic_params, bounded_ty, bounds } = bp;
@@ -1031,7 +1025,7 @@ fn noop_visit_where_predicate<T: MutVisitor>(pred: &mut WherePredicate, vis: &mu
     }
 }
 
-fn noop_visit_variant_data<T: MutVisitor>(vdata: &mut VariantData, vis: &mut T) {
+fn walk_variant_data<T: MutVisitor>(vdata: &mut VariantData, vis: &mut T) {
     match vdata {
         VariantData::Struct { fields, recovered: _ } => {
             fields.flat_map_in_place(|field| vis.flat_map_field_def(field));
@@ -1044,19 +1038,19 @@ fn noop_visit_variant_data<T: MutVisitor>(vdata: &mut VariantData, vis: &mut T)
     }
 }
 
-fn noop_visit_trait_ref<T: MutVisitor>(TraitRef { path, ref_id }: &mut TraitRef, vis: &mut T) {
+fn walk_trait_ref<T: MutVisitor>(TraitRef { path, ref_id }: &mut TraitRef, vis: &mut T) {
     vis.visit_id(ref_id);
     vis.visit_path(path);
 }
 
-fn noop_visit_poly_trait_ref<T: MutVisitor>(p: &mut PolyTraitRef, vis: &mut T) {
+fn walk_poly_trait_ref<T: MutVisitor>(p: &mut PolyTraitRef, vis: &mut T) {
     let PolyTraitRef { bound_generic_params, trait_ref, span } = p;
     bound_generic_params.flat_map_in_place(|param| vis.flat_map_generic_param(param));
     vis.visit_trait_ref(trait_ref);
     vis.visit_span(span);
 }
 
-pub fn noop_flat_map_field_def<T: MutVisitor>(
+pub fn walk_flat_map_field_def<T: MutVisitor>(
     mut fd: FieldDef,
     visitor: &mut T,
 ) -> SmallVec<[FieldDef; 1]> {
@@ -1070,7 +1064,7 @@ pub fn noop_flat_map_field_def<T: MutVisitor>(
     smallvec![fd]
 }
 
-pub fn noop_flat_map_expr_field<T: MutVisitor>(
+pub fn walk_flat_map_expr_field<T: MutVisitor>(
     mut f: ExprField,
     vis: &mut T,
 ) -> SmallVec<[ExprField; 1]> {
@@ -1083,11 +1077,11 @@ pub fn noop_flat_map_expr_field<T: MutVisitor>(
     smallvec![f]
 }
 
-fn noop_visit_mt<T: MutVisitor>(MutTy { ty, mutbl: _ }: &mut MutTy, vis: &mut T) {
+fn walk_mt<T: MutVisitor>(MutTy { ty, mutbl: _ }: &mut MutTy, vis: &mut T) {
     vis.visit_ty(ty);
 }
 
-pub fn noop_visit_block<T: MutVisitor>(block: &mut P<Block>, vis: &mut T) {
+pub fn walk_block<T: MutVisitor>(block: &mut P<Block>, vis: &mut T) {
     let Block { id, stmts, rules: _, span, tokens, could_be_bare_literal: _ } = block.deref_mut();
     vis.visit_id(id);
     stmts.flat_map_in_place(|stmt| vis.flat_map_stmt(stmt));
@@ -1095,18 +1089,18 @@ pub fn noop_visit_block<T: MutVisitor>(block: &mut P<Block>, vis: &mut T) {
     vis.visit_span(span);
 }
 
-pub fn noop_visit_item_kind(
+pub fn walk_item_kind(
     kind: &mut impl NoopVisitItemKind,
     ident: Ident,
     span: Span,
     id: NodeId,
     vis: &mut impl MutVisitor,
 ) {
-    kind.noop_visit(None, ident, span, id, vis)
+    kind.walk(None, ident, span, id, vis)
 }
 
 impl NoopVisitItemKind for ItemKind {
-    fn noop_visit(
+    fn walk(
         &mut self,
         ctxt: Option<AssocCtxt>,
         ident: Ident,
@@ -1147,7 +1141,7 @@ impl NoopVisitItemKind for ItemKind {
                 vis.visit_generics(generics);
                 visit_bounds(bounds, BoundKind::Bound, vis);
                 visit_opt(ty, |ty| vis.visit_ty(ty));
-                noop_visit_ty_alias_where_clauses(where_clauses, vis);
+                walk_ty_alias_where_clauses(where_clauses, vis);
             }
             ItemKind::Enum(EnumDef { variants }, generics) => {
                 vis.visit_generics(generics);
@@ -1226,7 +1220,7 @@ impl NoopVisitItemKind for ItemKind {
 }
 
 impl NoopVisitItemKind for AssocItemKind {
-    fn noop_visit(
+    fn walk(
         &mut self,
         ctxt: Option<AssocCtxt>,
         ident: Ident,
@@ -1258,7 +1252,7 @@ impl NoopVisitItemKind for AssocItemKind {
                 visitor.visit_generics(generics);
                 visit_bounds(bounds, BoundKind::Bound, visitor);
                 visit_opt(ty, |ty| visitor.visit_ty(ty));
-                noop_visit_ty_alias_where_clauses(where_clauses, visitor);
+                walk_ty_alias_where_clauses(where_clauses, visitor);
             }
             AssocItemKind::MacCall(mac) => visitor.visit_mac_call(mac),
             AssocItemKind::Delegation(box Delegation {
@@ -1308,14 +1302,14 @@ fn visit_const_item<T: MutVisitor>(
     visit_opt(expr, |expr| visitor.visit_expr(expr));
 }
 
-fn noop_visit_fn_header<T: MutVisitor>(header: &mut FnHeader, vis: &mut T) {
+fn walk_fn_header<T: MutVisitor>(header: &mut FnHeader, vis: &mut T) {
     let FnHeader { safety, coroutine_kind, constness, ext: _ } = header;
     visit_constness(constness, vis);
     coroutine_kind.as_mut().map(|coroutine_kind| vis.visit_coroutine_kind(coroutine_kind));
     visit_safety(safety, vis);
 }
 
-pub fn noop_visit_crate<T: MutVisitor>(krate: &mut Crate, vis: &mut T) {
+pub fn walk_crate<T: MutVisitor>(krate: &mut Crate, vis: &mut T) {
     let Crate { attrs, items, spans, id, is_placeholder: _ } = krate;
     vis.visit_id(id);
     visit_attrs(attrs, vis);
@@ -1326,7 +1320,7 @@ pub fn noop_visit_crate<T: MutVisitor>(krate: &mut Crate, vis: &mut T) {
 }
 
 /// Mutates one item, returning the item again.
-pub fn noop_flat_map_item<K: NoopVisitItemKind>(
+pub fn walk_flat_map_item<K: NoopVisitItemKind>(
     mut item: P<Item<K>>,
     ctxt: Option<AssocCtxt>,
     visitor: &mut impl MutVisitor,
@@ -1336,14 +1330,14 @@ pub fn noop_flat_map_item<K: NoopVisitItemKind>(
     visit_attrs(attrs, visitor);
     visitor.visit_vis(vis);
     visitor.visit_ident(ident);
-    kind.noop_visit(ctxt, *ident, *span, *id, visitor);
+    kind.walk(ctxt, *ident, *span, *id, visitor);
     visit_lazy_tts(tokens, visitor);
     visitor.visit_span(span);
     smallvec![item]
 }
 
 impl NoopVisitItemKind for ForeignItemKind {
-    fn noop_visit(
+    fn walk(
         &mut self,
         ctxt: Option<AssocCtxt>,
         ident: Ident,
@@ -1372,14 +1366,14 @@ impl NoopVisitItemKind for ForeignItemKind {
                 visitor.visit_generics(generics);
                 visit_bounds(bounds, BoundKind::Bound, visitor);
                 visit_opt(ty, |ty| visitor.visit_ty(ty));
-                noop_visit_ty_alias_where_clauses(where_clauses, visitor);
+                walk_ty_alias_where_clauses(where_clauses, visitor);
             }
             ForeignItemKind::MacCall(mac) => visitor.visit_mac_call(mac),
         }
     }
 }
 
-pub fn noop_visit_pat<T: MutVisitor>(pat: &mut P<Pat>, vis: &mut T) {
+pub fn walk_pat<T: MutVisitor>(pat: &mut P<Pat>, vis: &mut T) {
     let Pat { id, kind, span, tokens } = pat.deref_mut();
     vis.visit_id(id);
     match kind {
@@ -1422,12 +1416,12 @@ pub fn noop_visit_pat<T: MutVisitor>(pat: &mut P<Pat>, vis: &mut T) {
     vis.visit_span(span);
 }
 
-fn noop_visit_anon_const<T: MutVisitor>(AnonConst { id, value }: &mut AnonConst, vis: &mut T) {
+fn walk_anon_const<T: MutVisitor>(AnonConst { id, value }: &mut AnonConst, vis: &mut T) {
     vis.visit_id(id);
     vis.visit_expr(value);
 }
 
-fn noop_visit_inline_asm<T: MutVisitor>(asm: &mut InlineAsm, vis: &mut T) {
+fn walk_inline_asm<T: MutVisitor>(asm: &mut InlineAsm, vis: &mut T) {
     // FIXME: Visit spans inside all this currently ignored stuff.
     let InlineAsm {
         template: _,
@@ -1457,7 +1451,7 @@ fn noop_visit_inline_asm<T: MutVisitor>(asm: &mut InlineAsm, vis: &mut T) {
     }
 }
 
-fn noop_visit_inline_asm_sym<T: MutVisitor>(
+fn walk_inline_asm_sym<T: MutVisitor>(
     InlineAsmSym { id, qself, path }: &mut InlineAsmSym,
     vis: &mut T,
 ) {
@@ -1466,7 +1460,7 @@ fn noop_visit_inline_asm_sym<T: MutVisitor>(
     vis.visit_path(path);
 }
 
-fn noop_visit_format_args<T: MutVisitor>(fmt: &mut FormatArgs, vis: &mut T) {
+fn walk_format_args<T: MutVisitor>(fmt: &mut FormatArgs, vis: &mut T) {
     // FIXME: visit the template exhaustively.
     let FormatArgs { span, template: _, arguments } = fmt;
     for FormatArgument { kind, expr } in arguments.all_args_mut() {
@@ -1481,10 +1475,7 @@ fn noop_visit_format_args<T: MutVisitor>(fmt: &mut FormatArgs, vis: &mut T) {
     vis.visit_span(span);
 }
 
-pub fn noop_visit_expr<T: MutVisitor>(
-    Expr { kind, id, span, attrs, tokens }: &mut Expr,
-    vis: &mut T,
-) {
+pub fn walk_expr<T: MutVisitor>(Expr { kind, id, span, attrs, tokens }: &mut Expr, vis: &mut T) {
     vis.visit_id(id);
     visit_attrs(attrs, vis);
     match kind {
@@ -1673,12 +1664,12 @@ pub fn noop_filter_map_expr<T: MutVisitor>(mut e: P<Expr>, vis: &mut T) -> Optio
     })
 }
 
-pub fn noop_flat_map_stmt<T: MutVisitor>(
+pub fn walk_flat_map_stmt<T: MutVisitor>(
     Stmt { kind, mut span, mut id }: Stmt,
     vis: &mut T,
 ) -> SmallVec<[Stmt; 1]> {
     vis.visit_id(&mut id);
-    let stmts: SmallVec<_> = noop_flat_map_stmt_kind(kind, vis)
+    let stmts: SmallVec<_> = walk_flat_map_stmt_kind(kind, vis)
         .into_iter()
         .map(|kind| Stmt { id, kind, span })
         .collect();
@@ -1692,7 +1683,7 @@ pub fn noop_flat_map_stmt<T: MutVisitor>(
     stmts
 }
 
-fn noop_flat_map_stmt_kind<T: MutVisitor>(kind: StmtKind, vis: &mut T) -> SmallVec<[StmtKind; 1]> {
+fn walk_flat_map_stmt_kind<T: MutVisitor>(kind: StmtKind, vis: &mut T) -> SmallVec<[StmtKind; 1]> {
     match kind {
         StmtKind::Let(mut local) => smallvec![StmtKind::Let({
             vis.visit_local(&mut local);
@@ -1712,7 +1703,7 @@ fn noop_flat_map_stmt_kind<T: MutVisitor>(kind: StmtKind, vis: &mut T) -> SmallV
     }
 }
 
-fn noop_visit_vis<T: MutVisitor>(visibility: &mut Visibility, vis: &mut T) {
+fn walk_vis<T: MutVisitor>(visibility: &mut Visibility, vis: &mut T) {
     let Visibility { kind, span, tokens } = visibility;
     match kind {
         VisibilityKind::Public | VisibilityKind::Inherited => {}
@@ -1725,7 +1716,7 @@ fn noop_visit_vis<T: MutVisitor>(visibility: &mut Visibility, vis: &mut T) {
     vis.visit_span(span);
 }
 
-fn noop_visit_capture_by<T: MutVisitor>(capture_by: &mut CaptureBy, vis: &mut T) {
+fn walk_capture_by<T: MutVisitor>(capture_by: &mut CaptureBy, vis: &mut T) {
     match capture_by {
         CaptureBy::Ref => {}
         CaptureBy::Value { move_kw } => {
diff --git a/compiler/rustc_builtin_macros/src/cfg_eval.rs b/compiler/rustc_builtin_macros/src/cfg_eval.rs
index 1cfbaf9d669..39d66b5a6de 100644
--- a/compiler/rustc_builtin_macros/src/cfg_eval.rs
+++ b/compiler/rustc_builtin_macros/src/cfg_eval.rs
@@ -212,18 +212,18 @@ impl MutVisitor for CfgEval<'_> {
     #[instrument(level = "trace", skip(self))]
     fn visit_expr(&mut self, expr: &mut P<ast::Expr>) {
         self.0.configure_expr(expr, false);
-        mut_visit::noop_visit_expr(expr, self);
+        mut_visit::walk_expr(expr, self);
     }
 
     #[instrument(level = "trace", skip(self))]
     fn visit_method_receiver_expr(&mut self, expr: &mut P<ast::Expr>) {
         self.0.configure_expr(expr, true);
-        mut_visit::noop_visit_expr(expr, self);
+        mut_visit::walk_expr(expr, self);
     }
 
     fn filter_map_expr(&mut self, expr: P<ast::Expr>) -> Option<P<ast::Expr>> {
         let mut expr = configure!(self, expr);
-        mut_visit::noop_visit_expr(&mut expr, self);
+        mut_visit::walk_expr(&mut expr, self);
         Some(expr)
     }
 
@@ -231,15 +231,15 @@ impl MutVisitor for CfgEval<'_> {
         &mut self,
         param: ast::GenericParam,
     ) -> SmallVec<[ast::GenericParam; 1]> {
-        mut_visit::noop_flat_map_generic_param(configure!(self, param), self)
+        mut_visit::walk_flat_map_generic_param(configure!(self, param), self)
     }
 
     fn flat_map_stmt(&mut self, stmt: ast::Stmt) -> SmallVec<[ast::Stmt; 1]> {
-        mut_visit::noop_flat_map_stmt(configure!(self, stmt), self)
+        mut_visit::walk_flat_map_stmt(configure!(self, stmt), self)
     }
 
     fn flat_map_item(&mut self, item: P<ast::Item>) -> SmallVec<[P<ast::Item>; 1]> {
-        mut_visit::noop_flat_map_item(configure!(self, item), None, self)
+        mut_visit::walk_flat_map_item(configure!(self, item), None, self)
     }
 
     fn flat_map_assoc_item(
@@ -247,37 +247,37 @@ impl MutVisitor for CfgEval<'_> {
         item: P<ast::AssocItem>,
         ctxt: AssocCtxt,
     ) -> SmallVec<[P<ast::AssocItem>; 1]> {
-        mut_visit::noop_flat_map_item(configure!(self, item), Some(ctxt), self)
+        mut_visit::walk_flat_map_item(configure!(self, item), Some(ctxt), self)
     }
 
     fn flat_map_foreign_item(
         &mut self,
         foreign_item: P<ast::ForeignItem>,
     ) -> SmallVec<[P<ast::ForeignItem>; 1]> {
-        mut_visit::noop_flat_map_item(configure!(self, foreign_item), None, self)
+        mut_visit::walk_flat_map_item(configure!(self, foreign_item), None, self)
     }
 
     fn flat_map_arm(&mut self, arm: ast::Arm) -> SmallVec<[ast::Arm; 1]> {
-        mut_visit::noop_flat_map_arm(configure!(self, arm), self)
+        mut_visit::walk_flat_map_arm(configure!(self, arm), self)
     }
 
     fn flat_map_expr_field(&mut self, field: ast::ExprField) -> SmallVec<[ast::ExprField; 1]> {
-        mut_visit::noop_flat_map_expr_field(configure!(self, field), self)
+        mut_visit::walk_flat_map_expr_field(configure!(self, field), self)
     }
 
     fn flat_map_pat_field(&mut self, fp: ast::PatField) -> SmallVec<[ast::PatField; 1]> {
-        mut_visit::noop_flat_map_pat_field(configure!(self, fp), self)
+        mut_visit::walk_flat_map_pat_field(configure!(self, fp), self)
     }
 
     fn flat_map_param(&mut self, p: ast::Param) -> SmallVec<[ast::Param; 1]> {
-        mut_visit::noop_flat_map_param(configure!(self, p), self)
+        mut_visit::walk_flat_map_param(configure!(self, p), self)
     }
 
     fn flat_map_field_def(&mut self, sf: ast::FieldDef) -> SmallVec<[ast::FieldDef; 1]> {
-        mut_visit::noop_flat_map_field_def(configure!(self, sf), self)
+        mut_visit::walk_flat_map_field_def(configure!(self, sf), self)
     }
 
     fn flat_map_variant(&mut self, variant: ast::Variant) -> SmallVec<[ast::Variant; 1]> {
-        mut_visit::noop_flat_map_variant(configure!(self, variant), self)
+        mut_visit::walk_flat_map_variant(configure!(self, variant), self)
     }
 }
diff --git a/compiler/rustc_builtin_macros/src/test_harness.rs b/compiler/rustc_builtin_macros/src/test_harness.rs
index 88712ad569b..2e4d60a0817 100644
--- a/compiler/rustc_builtin_macros/src/test_harness.rs
+++ b/compiler/rustc_builtin_macros/src/test_harness.rs
@@ -122,7 +122,7 @@ impl TestHarnessGenerator<'_> {
 impl<'a> MutVisitor for TestHarnessGenerator<'a> {
     fn visit_crate(&mut self, c: &mut ast::Crate) {
         let prev_tests = mem::take(&mut self.tests);
-        noop_visit_crate(c, self);
+        walk_crate(c, self);
         self.add_test_cases(ast::CRATE_NODE_ID, c.spans.inner_span, prev_tests);
 
         // Create a main function to run our tests
@@ -144,7 +144,7 @@ impl<'a> MutVisitor for TestHarnessGenerator<'a> {
             item.kind
         {
             let prev_tests = mem::take(&mut self.tests);
-            noop_visit_item_kind(&mut item.kind, item.ident, item.span, item.id, self);
+            walk_item_kind(&mut item.kind, item.ident, item.span, item.id, self);
             self.add_test_cases(item.id, span, prev_tests);
         } else {
             // But in those cases, we emit a lint to warn the user of these missing tests.
@@ -192,7 +192,7 @@ struct EntryPointCleaner<'a> {
 impl<'a> MutVisitor for EntryPointCleaner<'a> {
     fn flat_map_item(&mut self, i: P<ast::Item>) -> SmallVec<[P<ast::Item>; 1]> {
         self.depth += 1;
-        let item = noop_flat_map_item(i, None, self).expect_one("noop did something");
+        let item = walk_flat_map_item(i, None, self).expect_one("noop did something");
         self.depth -= 1;
 
         // Remove any #[rustc_main] or #[start] from the AST so it doesn't
diff --git a/compiler/rustc_expand/src/expand.rs b/compiler/rustc_expand/src/expand.rs
index 6f4df7bb168..c10b7114123 100644
--- a/compiler/rustc_expand/src/expand.rs
+++ b/compiler/rustc_expand/src/expand.rs
@@ -1036,7 +1036,7 @@ pub(crate) fn ensure_complete_parse<'a>(
     }
 }
 
-/// Wraps a call to `noop_visit_*` / `noop_flat_map_*`
+/// Wraps a call to `walk_*` / `walk_flat_map_*`
 /// for an AST node that supports attributes
 /// (see the `Annotatable` enum)
 /// This method assigns a `NodeId`, and sets that `NodeId`
@@ -1056,7 +1056,7 @@ pub(crate) fn ensure_complete_parse<'a>(
 /// * `id` is a mutable reference to the `NodeId` field
 ///    of the current AST node.
 /// * `closure` is a closure that executes the
-///   `noop_visit_*` / `noop_flat_map_*` method
+///   `walk_*` / `walk_flat_map_*` method
 ///   for the current AST node.
 macro_rules! assign_id {
     ($self:ident, $id:expr, $closure:expr) => {{
@@ -1090,10 +1090,10 @@ trait InvocationCollectorNode: HasAttrs + HasNodeId + Sized {
     fn descr() -> &'static str {
         unreachable!()
     }
-    fn noop_flat_map<V: MutVisitor>(self, _visitor: &mut V) -> Self::OutputTy {
+    fn walk_flat_map<V: MutVisitor>(self, _visitor: &mut V) -> Self::OutputTy {
         unreachable!()
     }
-    fn noop_visit<V: MutVisitor>(&mut self, _visitor: &mut V) {
+    fn walk<V: MutVisitor>(&mut self, _visitor: &mut V) {
         unreachable!()
     }
     fn is_mac_call(&self) -> bool {
@@ -1117,12 +1117,12 @@ trait InvocationCollectorNode: HasAttrs + HasNodeId + Sized {
     fn pre_flat_map_node_collect_attr(_cfg: &StripUnconfigured<'_>, _attr: &ast::Attribute) {}
     fn post_flat_map_node_collect_bang(_output: &mut Self::OutputTy, _add_semicolon: AddSemicolon) {
     }
-    fn wrap_flat_map_node_noop_flat_map(
+    fn wrap_flat_map_node_walk_flat_map(
         node: Self,
         collector: &mut InvocationCollector<'_, '_>,
-        noop_flat_map: impl FnOnce(Self, &mut InvocationCollector<'_, '_>) -> Self::OutputTy,
+        walk_flat_map: impl FnOnce(Self, &mut InvocationCollector<'_, '_>) -> Self::OutputTy,
     ) -> Result<Self::OutputTy, Self> {
-        Ok(noop_flat_map(node, collector))
+        Ok(walk_flat_map(node, collector))
     }
     fn expand_cfg_false(
         &mut self,
@@ -1148,8 +1148,8 @@ impl InvocationCollectorNode for P<ast::Item> {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_items()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_item(self, None, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_item(self, None, visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.kind, ItemKind::MacCall(..))
@@ -1176,13 +1176,13 @@ impl InvocationCollectorNode for P<ast::Item> {
     fn flatten_outputs(items: impl Iterator<Item = Self::OutputTy>) -> Self::OutputTy {
         items.flatten().collect()
     }
-    fn wrap_flat_map_node_noop_flat_map(
+    fn wrap_flat_map_node_walk_flat_map(
         mut node: Self,
         collector: &mut InvocationCollector<'_, '_>,
-        noop_flat_map: impl FnOnce(Self, &mut InvocationCollector<'_, '_>) -> Self::OutputTy,
+        walk_flat_map: impl FnOnce(Self, &mut InvocationCollector<'_, '_>) -> Self::OutputTy,
     ) -> Result<Self::OutputTy, Self> {
         if !matches!(node.kind, ItemKind::Mod(..)) {
-            return Ok(noop_flat_map(node, collector));
+            return Ok(walk_flat_map(node, collector));
         }
 
         // Work around borrow checker not seeing through `P`'s deref.
@@ -1252,7 +1252,7 @@ impl InvocationCollectorNode for P<ast::Item> {
         let orig_dir_ownership =
             mem::replace(&mut ecx.current_expansion.dir_ownership, dir_ownership);
 
-        let res = Ok(noop_flat_map(node, collector));
+        let res = Ok(walk_flat_map(node, collector));
 
         collector.cx.current_expansion.dir_ownership = orig_dir_ownership;
         collector.cx.current_expansion.module = orig_module;
@@ -1292,8 +1292,8 @@ impl InvocationCollectorNode for AstNodeWrapper<P<ast::AssocItem>, TraitItemTag>
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_trait_items()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_item(self.wrapped, Some(AssocCtxt::Trait), visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_item(self.wrapped, Some(AssocCtxt::Trait), visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.wrapped.kind, AssocItemKind::MacCall(..))
@@ -1333,8 +1333,8 @@ impl InvocationCollectorNode for AstNodeWrapper<P<ast::AssocItem>, ImplItemTag>
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_impl_items()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_item(self.wrapped, Some(AssocCtxt::Impl), visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_item(self.wrapped, Some(AssocCtxt::Impl), visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.wrapped.kind, AssocItemKind::MacCall(..))
@@ -1371,8 +1371,8 @@ impl InvocationCollectorNode for P<ast::ForeignItem> {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_foreign_items()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_item(self, None, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_item(self, None, visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.kind, ForeignItemKind::MacCall(..))
@@ -1394,8 +1394,8 @@ impl InvocationCollectorNode for ast::Variant {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_variants()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_variant(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_variant(self, visitor)
     }
 }
 
@@ -1407,8 +1407,8 @@ impl InvocationCollectorNode for ast::FieldDef {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_field_defs()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_field_def(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_field_def(self, visitor)
     }
 }
 
@@ -1420,8 +1420,8 @@ impl InvocationCollectorNode for ast::PatField {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_pat_fields()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_pat_field(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_pat_field(self, visitor)
     }
 }
 
@@ -1433,8 +1433,8 @@ impl InvocationCollectorNode for ast::ExprField {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_expr_fields()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_expr_field(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_expr_field(self, visitor)
     }
 }
 
@@ -1446,8 +1446,8 @@ impl InvocationCollectorNode for ast::Param {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_params()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_param(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_param(self, visitor)
     }
 }
 
@@ -1459,8 +1459,8 @@ impl InvocationCollectorNode for ast::GenericParam {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_generic_params()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_generic_param(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_generic_param(self, visitor)
     }
 }
 
@@ -1472,8 +1472,8 @@ impl InvocationCollectorNode for ast::Arm {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_arms()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_arm(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_arm(self, visitor)
     }
 }
 
@@ -1486,8 +1486,8 @@ impl InvocationCollectorNode for ast::Stmt {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_stmts()
     }
-    fn noop_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
-        noop_flat_map_stmt(self, visitor)
+    fn walk_flat_map<V: MutVisitor>(self, visitor: &mut V) -> Self::OutputTy {
+        walk_flat_map_stmt(self, visitor)
     }
     fn is_mac_call(&self) -> bool {
         match &self.kind {
@@ -1560,8 +1560,8 @@ impl InvocationCollectorNode for ast::Crate {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_crate()
     }
-    fn noop_visit<V: MutVisitor>(&mut self, visitor: &mut V) {
-        noop_visit_crate(self, visitor)
+    fn walk<V: MutVisitor>(&mut self, visitor: &mut V) {
+        walk_crate(self, visitor)
     }
     fn expand_cfg_false(
         &mut self,
@@ -1586,8 +1586,8 @@ impl InvocationCollectorNode for P<ast::Ty> {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_ty()
     }
-    fn noop_visit<V: MutVisitor>(&mut self, visitor: &mut V) {
-        noop_visit_ty(self, visitor)
+    fn walk<V: MutVisitor>(&mut self, visitor: &mut V) {
+        walk_ty(self, visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.kind, ast::TyKind::MacCall(..))
@@ -1610,8 +1610,8 @@ impl InvocationCollectorNode for P<ast::Pat> {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_pat()
     }
-    fn noop_visit<V: MutVisitor>(&mut self, visitor: &mut V) {
-        noop_visit_pat(self, visitor)
+    fn walk<V: MutVisitor>(&mut self, visitor: &mut V) {
+        walk_pat(self, visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.kind, PatKind::MacCall(..))
@@ -1638,8 +1638,8 @@ impl InvocationCollectorNode for P<ast::Expr> {
     fn descr() -> &'static str {
         "an expression"
     }
-    fn noop_visit<V: MutVisitor>(&mut self, visitor: &mut V) {
-        noop_visit_expr(self, visitor)
+    fn walk<V: MutVisitor>(&mut self, visitor: &mut V) {
+        walk_expr(self, visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.kind, ExprKind::MacCall(..))
@@ -1664,8 +1664,8 @@ impl InvocationCollectorNode for AstNodeWrapper<P<ast::Expr>, OptExprTag> {
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         fragment.make_opt_expr()
     }
-    fn noop_flat_map<V: MutVisitor>(mut self, visitor: &mut V) -> Self::OutputTy {
-        noop_visit_expr(&mut self.wrapped, visitor);
+    fn walk_flat_map<V: MutVisitor>(mut self, visitor: &mut V) -> Self::OutputTy {
+        walk_expr(&mut self.wrapped, visitor);
         Some(self.wrapped)
     }
     fn is_mac_call(&self) -> bool {
@@ -1704,8 +1704,8 @@ impl InvocationCollectorNode for AstNodeWrapper<P<ast::Expr>, MethodReceiverTag>
     fn fragment_to_output(fragment: AstFragment) -> Self::OutputTy {
         AstNodeWrapper::new(fragment.make_method_receiver_expr(), MethodReceiverTag)
     }
-    fn noop_visit<V: MutVisitor>(&mut self, visitor: &mut V) {
-        noop_visit_expr(&mut self.wrapped, visitor)
+    fn walk<V: MutVisitor>(&mut self, visitor: &mut V) {
+        walk_expr(&mut self.wrapped, visitor)
     }
     fn is_mac_call(&self) -> bool {
         matches!(self.wrapped.kind, ast::ExprKind::MacCall(..))
@@ -2015,12 +2015,12 @@ impl<'a, 'b> InvocationCollector<'a, 'b> {
                     );
                     Node::flatten_outputs(single_delegations.map(|item| {
                         let mut item = Node::from_item(item);
-                        assign_id!(self, item.node_id_mut(), || item.noop_flat_map(self))
+                        assign_id!(self, item.node_id_mut(), || item.walk_flat_map(self))
                     }))
                 }
                 None => {
-                    match Node::wrap_flat_map_node_noop_flat_map(node, self, |mut node, this| {
-                        assign_id!(this, node.node_id_mut(), || node.noop_flat_map(this))
+                    match Node::wrap_flat_map_node_walk_flat_map(node, self, |mut node, this| {
+                        assign_id!(this, node.node_id_mut(), || node.walk_flat_map(this))
                     }) {
                         Ok(output) => output,
                         Err(returned_node) => {
@@ -2068,7 +2068,7 @@ impl<'a, 'b> InvocationCollector<'a, 'b> {
                 }
                 None if node.delegation().is_some() => unreachable!(),
                 None => {
-                    assign_id!(self, node.node_id_mut(), || node.noop_visit(self))
+                    assign_id!(self, node.node_id_mut(), || node.walk(self))
                 }
             };
         }
@@ -2147,11 +2147,11 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
                     self.cx.current_expansion.is_trailing_mac = true;
                     // Don't use `assign_id` for this statement - it may get removed
                     // entirely due to a `#[cfg]` on the contained expression
-                    let res = noop_flat_map_stmt(node, self);
+                    let res = walk_flat_map_stmt(node, self);
                     self.cx.current_expansion.is_trailing_mac = false;
                     res
                 }
-                _ => noop_flat_map_stmt(node, self),
+                _ => walk_flat_map_stmt(node, self),
             };
         }
 
@@ -2195,7 +2195,7 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
             &mut self.cx.current_expansion.dir_ownership,
             DirOwnership::UnownedViaBlock,
         );
-        noop_visit_block(node, self);
+        walk_block(node, self);
         self.cx.current_expansion.dir_ownership = orig_dir_ownership;
     }
 
diff --git a/compiler/rustc_expand/src/placeholders.rs b/compiler/rustc_expand/src/placeholders.rs
index 2ed968f57bc..a9884b344c7 100644
--- a/compiler/rustc_expand/src/placeholders.rs
+++ b/compiler/rustc_expand/src/placeholders.rs
@@ -209,7 +209,7 @@ impl MutVisitor for PlaceholderExpander {
         if arm.is_placeholder {
             self.remove(arm.id).make_arms()
         } else {
-            noop_flat_map_arm(arm, self)
+            walk_flat_map_arm(arm, self)
         }
     }
 
@@ -217,7 +217,7 @@ impl MutVisitor for PlaceholderExpander {
         if field.is_placeholder {
             self.remove(field.id).make_expr_fields()
         } else {
-            noop_flat_map_expr_field(field, self)
+            walk_flat_map_expr_field(field, self)
         }
     }
 
@@ -225,7 +225,7 @@ impl MutVisitor for PlaceholderExpander {
         if fp.is_placeholder {
             self.remove(fp.id).make_pat_fields()
         } else {
-            noop_flat_map_pat_field(fp, self)
+            walk_flat_map_pat_field(fp, self)
         }
     }
 
@@ -236,7 +236,7 @@ impl MutVisitor for PlaceholderExpander {
         if param.is_placeholder {
             self.remove(param.id).make_generic_params()
         } else {
-            noop_flat_map_generic_param(param, self)
+            walk_flat_map_generic_param(param, self)
         }
     }
 
@@ -244,7 +244,7 @@ impl MutVisitor for PlaceholderExpander {
         if p.is_placeholder {
             self.remove(p.id).make_params()
         } else {
-            noop_flat_map_param(p, self)
+            walk_flat_map_param(p, self)
         }
     }
 
@@ -252,7 +252,7 @@ impl MutVisitor for PlaceholderExpander {
         if sf.is_placeholder {
             self.remove(sf.id).make_field_defs()
         } else {
-            noop_flat_map_field_def(sf, self)
+            walk_flat_map_field_def(sf, self)
         }
     }
 
@@ -260,14 +260,14 @@ impl MutVisitor for PlaceholderExpander {
         if variant.is_placeholder {
             self.remove(variant.id).make_variants()
         } else {
-            noop_flat_map_variant(variant, self)
+            walk_flat_map_variant(variant, self)
         }
     }
 
     fn flat_map_item(&mut self, item: P<ast::Item>) -> SmallVec<[P<ast::Item>; 1]> {
         match item.kind {
             ast::ItemKind::MacCall(_) => self.remove(item.id).make_items(),
-            _ => noop_flat_map_item(item, None, self),
+            _ => walk_flat_map_item(item, None, self),
         }
     }
 
@@ -284,7 +284,7 @@ impl MutVisitor for PlaceholderExpander {
                     AssocCtxt::Impl => it.make_impl_items(),
                 }
             }
-            _ => noop_flat_map_item(item, Some(ctxt), self),
+            _ => walk_flat_map_item(item, Some(ctxt), self),
         }
     }
 
@@ -294,21 +294,21 @@ impl MutVisitor for PlaceholderExpander {
     ) -> SmallVec<[P<ast::ForeignItem>; 1]> {
         match item.kind {
             ast::ForeignItemKind::MacCall(_) => self.remove(item.id).make_foreign_items(),
-            _ => noop_flat_map_item(item, None, self),
+            _ => walk_flat_map_item(item, None, self),
         }
     }
 
     fn visit_expr(&mut self, expr: &mut P<ast::Expr>) {
         match expr.kind {
             ast::ExprKind::MacCall(_) => *expr = self.remove(expr.id).make_expr(),
-            _ => noop_visit_expr(expr, self),
+            _ => walk_expr(expr, self),
         }
     }
 
     fn visit_method_receiver_expr(&mut self, expr: &mut P<ast::Expr>) {
         match expr.kind {
             ast::ExprKind::MacCall(_) => *expr = self.remove(expr.id).make_method_receiver_expr(),
-            _ => noop_visit_expr(expr, self),
+            _ => walk_expr(expr, self),
         }
     }
 
@@ -322,7 +322,7 @@ impl MutVisitor for PlaceholderExpander {
     fn flat_map_stmt(&mut self, stmt: ast::Stmt) -> SmallVec<[ast::Stmt; 1]> {
         let (style, mut stmts) = match stmt.kind {
             ast::StmtKind::MacCall(mac) => (mac.style, self.remove(stmt.id).make_stmts()),
-            _ => return noop_flat_map_stmt(stmt, self),
+            _ => return walk_flat_map_stmt(stmt, self),
         };
 
         if style == ast::MacStmtStyle::Semicolon {
@@ -368,14 +368,14 @@ impl MutVisitor for PlaceholderExpander {
     fn visit_pat(&mut self, pat: &mut P<ast::Pat>) {
         match pat.kind {
             ast::PatKind::MacCall(_) => *pat = self.remove(pat.id).make_pat(),
-            _ => noop_visit_pat(pat, self),
+            _ => walk_pat(pat, self),
         }
     }
 
     fn visit_ty(&mut self, ty: &mut P<ast::Ty>) {
         match ty.kind {
             ast::TyKind::MacCall(_) => *ty = self.remove(ty.id).make_ty(),
-            _ => noop_visit_ty(ty, self),
+            _ => walk_ty(ty, self),
         }
     }
 
@@ -383,7 +383,7 @@ impl MutVisitor for PlaceholderExpander {
         if krate.is_placeholder {
             *krate = self.remove(krate.id).make_crate();
         } else {
-            noop_visit_crate(krate, self)
+            walk_crate(krate, self)
         }
     }
 }
diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs
index 2542108728f..e1b34c2564b 100644
--- a/compiler/rustc_parse/src/parser/expr.rs
+++ b/compiler/rustc_parse/src/parser/expr.rs
@@ -10,7 +10,7 @@ use super::{
 
 use crate::errors;
 use crate::maybe_recover_from_interpolated_ty_qpath;
-use ast::mut_visit::{noop_visit_expr, MutVisitor};
+use ast::mut_visit::{self, MutVisitor};
 use ast::token::IdentIsRaw;
 use ast::{CoroutineKind, ForLoopKind, GenBlockKind, MatchKind, Pat, Path, PathSegment, Recovered};
 use core::mem;
@@ -3939,14 +3939,14 @@ impl MutVisitor for CondChecker<'_> {
                 }
             }
             ExprKind::Binary(Spanned { node: BinOpKind::And, .. }, _, _) => {
-                noop_visit_expr(e, self);
+                mut_visit::walk_expr(e, self);
             }
             ExprKind::Binary(Spanned { node: BinOpKind::Or, span: or_span }, _, _)
                 if let None | Some(NotSupportedOr(_)) = self.forbid_let_reason =>
             {
                 let forbid_let_reason = self.forbid_let_reason;
                 self.forbid_let_reason = Some(NotSupportedOr(or_span));
-                noop_visit_expr(e, self);
+                mut_visit::walk_expr(e, self);
                 self.forbid_let_reason = forbid_let_reason;
             }
             ExprKind::Paren(ref inner)
@@ -3954,7 +3954,7 @@ impl MutVisitor for CondChecker<'_> {
             {
                 let forbid_let_reason = self.forbid_let_reason;
                 self.forbid_let_reason = Some(NotSupportedParentheses(inner.span));
-                noop_visit_expr(e, self);
+                mut_visit::walk_expr(e, self);
                 self.forbid_let_reason = forbid_let_reason;
             }
             ExprKind::Assign(ref lhs, _, span) => {
@@ -3972,7 +3972,7 @@ impl MutVisitor for CondChecker<'_> {
                 }
                 let comparison = self.comparison;
                 self.comparison = Some(errors::MaybeComparison { span: span.shrink_to_hi() });
-                noop_visit_expr(e, self);
+                mut_visit::walk_expr(e, self);
                 self.forbid_let_reason = forbid_let_reason;
                 self.missing_let = missing_let;
                 self.comparison = comparison;
@@ -3992,7 +3992,7 @@ impl MutVisitor for CondChecker<'_> {
             | ExprKind::Paren(_) => {
                 let forbid_let_reason = self.forbid_let_reason;
                 self.forbid_let_reason = Some(OtherForbidden);
-                noop_visit_expr(e, self);
+                mut_visit::walk_expr(e, self);
                 self.forbid_let_reason = forbid_let_reason;
             }
             ExprKind::Cast(ref mut op, _) | ExprKind::Type(ref mut op, _) => {
diff --git a/compiler/rustc_parse/src/parser/pat.rs b/compiler/rustc_parse/src/parser/pat.rs
index 18d531faeaa..487072e2f51 100644
--- a/compiler/rustc_parse/src/parser/pat.rs
+++ b/compiler/rustc_parse/src/parser/pat.rs
@@ -12,7 +12,7 @@ use crate::errors::{
 };
 use crate::parser::expr::{could_be_unclosed_char_literal, LhsExpr};
 use crate::{maybe_recover_from_interpolated_ty_qpath, maybe_whole};
-use rustc_ast::mut_visit::{noop_visit_pat, MutVisitor};
+use rustc_ast::mut_visit::{walk_pat, MutVisitor};
 use rustc_ast::ptr::P;
 use rustc_ast::token::{self, BinOpToken, Delimiter, Token};
 use rustc_ast::{
@@ -810,7 +810,7 @@ impl<'a> Parser<'a> {
                     self.0 = true;
                     *m = Mutability::Mut;
                 }
-                noop_visit_pat(pat, self);
+                walk_pat(pat, self);
             }
         }
 
diff --git a/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs b/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs
index fcc41b51542..1e6b5c1c7f1 100644
--- a/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs
+++ b/src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs
@@ -121,7 +121,7 @@ fn remove_all_parens(pat: &mut P<Pat>) {
     struct Visitor;
     impl MutVisitor for Visitor {
         fn visit_pat(&mut self, pat: &mut P<Pat>) {
-            noop_visit_pat(pat, self);
+            walk_pat(pat, self);
             let inner = match &mut pat.kind {
                 Paren(i) => mem::replace(&mut i.kind, Wild),
                 _ => return,
@@ -138,7 +138,7 @@ fn insert_necessary_parens(pat: &mut P<Pat>) {
     impl MutVisitor for Visitor {
         fn visit_pat(&mut self, pat: &mut P<Pat>) {
             use ast::BindingMode;
-            noop_visit_pat(pat, self);
+            walk_pat(pat, self);
             let target = match &mut pat.kind {
                 // `i @ a | b`, `box a | b`, and `& mut? a | b`.
                 Ident(.., Some(p)) | Box(p) | Ref(p, _) if matches!(&p.kind, Or(ps) if ps.len() > 1) => p,
@@ -160,7 +160,7 @@ fn unnest_or_patterns(pat: &mut P<Pat>) -> bool {
     impl MutVisitor for Visitor {
         fn visit_pat(&mut self, p: &mut P<Pat>) {
             // This is a bottom up transformation, so recurse first.
-            noop_visit_pat(p, self);
+            walk_pat(p, self);
 
             // Don't have an or-pattern? Just quit early on.
             let Or(alternatives) = &mut p.kind else { return };
@@ -189,7 +189,7 @@ fn unnest_or_patterns(pat: &mut P<Pat>) -> bool {
 
             // Deal with `Some(Some(0)) | Some(Some(1))`.
             if this_level_changed {
-                noop_visit_pat(p, self);
+                walk_pat(p, self);
             }
         }
     }
diff --git a/tests/ui-fulldeps/pprust-expr-roundtrip.rs b/tests/ui-fulldeps/pprust-expr-roundtrip.rs
index 762ad0b79ec..8cb55d420b9 100644
--- a/tests/ui-fulldeps/pprust-expr-roundtrip.rs
+++ b/tests/ui-fulldeps/pprust-expr-roundtrip.rs
@@ -202,7 +202,7 @@ impl MutVisitor for RemoveParens {
             ExprKind::Paren(inner) => *e = inner,
             _ => {}
         };
-        mut_visit::noop_visit_expr(e, self);
+        mut_visit::walk_expr(e, self);
     }
 }
 
@@ -211,7 +211,7 @@ struct AddParens;
 
 impl MutVisitor for AddParens {
     fn visit_expr(&mut self, e: &mut P<Expr>) {
-        mut_visit::noop_visit_expr(e, self);
+        mut_visit::walk_expr(e, self);
         visit_clobber(e, |e| {
             P(Expr {
                 id: DUMMY_NODE_ID,