diff --git a/gcc/rust/resolve/rust-early-name-resolver.cc b/gcc/rust/resolve/rust-early-name-resolver.cc
index 63452318113..fab52edb0ed 100644
--- a/gcc/rust/resolve/rust-early-name-resolver.cc
+++ b/gcc/rust/resolve/rust-early-name-resolver.cc
@@ -21,6 +21,7 @@
 #include "rust-name-resolver.h"
 #include "rust-macro-builtins.h"
 #include "rust-attribute-values.h"
+#include "rust-attributes.h"
 
 namespace Rust {
 namespace Resolver {
@@ -485,14 +486,8 @@ EarlyNameResolver::visit (AST::MacroInvocation &invoc)
   auto rules_def = mappings.lookup_macro_def (resolved_node);
 
   auto &outer_attrs = rules_def.value ()->get_outer_attrs ();
-  bool is_builtin
-    = std::any_of (outer_attrs.begin (), outer_attrs.end (),
-		   [] (AST::Attribute attr) {
-		     return attr.get_path ()
-			    == Values::Attributes::RUSTC_BUILTIN_MACRO;
-		   });
-
-  if (is_builtin)
+
+  if (Analysis::Attributes::is_rustc_builtin_macro (outer_attrs))
     {
       auto builtin_kind = builtin_macro_from_string (
 	rules_def.value ()->get_rule_name ().as_string ());
diff --git a/gcc/rust/util/rust-attributes.cc b/gcc/rust/util/rust-attributes.cc
index 45ebf8c6546..f050b0960a6 100644
--- a/gcc/rust/util/rust-attributes.cc
+++ b/gcc/rust/util/rust-attributes.cc
@@ -37,6 +37,18 @@ Attributes::is_known (const std::string &attribute_path)
 
   return !lookup.is_error ();
 }
+bool
+Attributes::is_rustc_builtin_macro (AST::AttrVec outer_attrs)
+{
+  for (auto attr : outer_attrs)
+    {
+      if (attr.get_path () == Values::Attributes::RUSTC_BUILTIN_MACRO)
+	{
+	  return true;
+	}
+    }
+  return false;
+}
 
 using Attrs = Values::Attributes;
 
diff --git a/gcc/rust/util/rust-attributes.h b/gcc/rust/util/rust-attributes.h
index c341b3e0a5d..46f6f681de7 100644
--- a/gcc/rust/util/rust-attributes.h
+++ b/gcc/rust/util/rust-attributes.h
@@ -29,6 +29,7 @@ class Attributes
 {
 public:
   static bool is_known (const std::string &attribute_path);
+  static bool is_rustc_builtin_macro (AST::AttrVec outer_attrs);
 };
 
 enum CompilerPass
diff --git a/gcc/rust/util/rust-hir-map.cc b/gcc/rust/util/rust-hir-map.cc
index 2edf0996276..e0d83b1b404 100644
--- a/gcc/rust/util/rust-hir-map.cc
+++ b/gcc/rust/util/rust-hir-map.cc
@@ -25,6 +25,7 @@
 #include "rust-macro-builtins.h"
 #include "rust-mapping-common.h"
 #include "rust-attribute-values.h"
+#include "rust-attributes.h"
 
 namespace Rust {
 namespace Analysis {
@@ -848,13 +849,8 @@ void
 Mappings::insert_macro_def (AST::MacroRulesDefinition *macro)
 {
   auto outer_attrs = macro->get_outer_attrs ();
-  bool should_be_builtin
-    = std::any_of (outer_attrs.begin (), outer_attrs.end (),
-		   [] (AST::Attribute attr) {
-		     return attr.get_path ()
-			    == Values::Attributes::RUSTC_BUILTIN_MACRO;
-		   });
-  if (should_be_builtin)
+
+  if (Analysis::Attributes::is_rustc_builtin_macro (outer_attrs))
     {
       auto builtin
 	= MacroBuiltin::builtins.lookup (macro->get_rule_name ().as_string ());