From e3b0e9db08425cf80090a193028ef49eae9761b1 Mon Sep 17 00:00:00 2001
From: Jonathan Brouwer <jonathantbrouwer@gmail.com>
Date: Sat, 25 Apr 2026 21:26:00 +0200
Subject: [PATCH] Remove `deprecation_note` from `AttributeExt`

---
 compiler/rustc_ast/src/attr/mod.rs | 28 ----------------------------
 compiler/rustc_hir/src/hir.rs      |  8 --------
 src/librustdoc/clean/types.rs      |  7 +------
 3 files changed, 1 insertion(+), 42 deletions(-)

diff --git a/compiler/rustc_ast/src/attr/mod.rs b/compiler/rustc_ast/src/attr/mod.rs
index bb2e444c722a..0374a86d3eb1 100644
--- a/compiler/rustc_ast/src/attr/mod.rs
+++ b/compiler/rustc_ast/src/attr/mod.rs
@@ -235,34 +235,6 @@ fn doc_str(&self) -> Option<Symbol> {
         }
     }
 
-    fn deprecation_note(&self) -> Option<Ident> {
-        match &self.kind {
-            AttrKind::Normal(normal) if normal.item.path == sym::deprecated => {
-                let meta = &normal.item;
-
-                // #[deprecated = "..."]
-                if let Some(s) = meta.value_str() {
-                    return Some(Ident { name: s, span: meta.span() });
-                }
-
-                // #[deprecated(note = "...")]
-                if let Some(list) = meta.meta_item_list() {
-                    for nested in list {
-                        if let Some(mi) = nested.meta_item()
-                            && mi.path == sym::note
-                            && let Some(s) = mi.value_str()
-                        {
-                            return Some(Ident { name: s, span: mi.span });
-                        }
-                    }
-                }
-
-                None
-            }
-            _ => None,
-        }
-    }
-
     fn doc_resolution_scope(&self) -> Option<AttrStyle> {
         match &self.kind {
             AttrKind::DocComment(..) => Some(self.style),
diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs
index 5608bd82fdac..60bfc5528256 100644
--- a/compiler/rustc_hir/src/hir.rs
+++ b/compiler/rustc_hir/src/hir.rs
@@ -1415,14 +1415,6 @@ fn doc_str(&self) -> Option<Symbol> {
         }
     }
 
-    #[inline]
-    fn deprecation_note(&self) -> Option<Ident> {
-        match &self {
-            Attribute::Parsed(AttributeKind::Deprecated { deprecation, .. }) => deprecation.note,
-            _ => None,
-        }
-    }
-
     fn is_automatically_derived_attr(&self) -> bool {
         matches!(self, Attribute::Parsed(AttributeKind::AutomaticallyDerived(..)))
     }
diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index a1eb093d7fcf..e81c6eae1996 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -8,7 +8,6 @@
 use itertools::Either;
 use rustc_abi::{ExternAbi, VariantIdx};
 use rustc_ast as ast;
-use rustc_ast::attr::AttributeExt;
 use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet};
 use rustc_data_structures::thin_vec::ThinVec;
 use rustc_hir as hir;
@@ -501,11 +500,7 @@ pub(crate) fn span(&self, tcx: TyCtxt<'_>) -> Option<Span> {
     }
 
     pub(crate) fn attr_span(&self, tcx: TyCtxt<'_>) -> rustc_span::Span {
-        let deprecation_notes = self
-            .attrs
-            .other_attrs
-            .iter()
-            .filter_map(|attr| attr.deprecation_note().map(|note| note.span));
+        let deprecation_notes = find_attr!(&self.attrs.other_attrs, Deprecated { deprecation, .. } => deprecation.note.map(|note| note.span)).flatten();
 
         span_of_fragments(&self.attrs.doc_strings)
             .into_iter()