Remove `macro_defs` map

We store store the `DefId` directly in `ExpnData`. This will allow us to
serialize `ExpnData` in PR #72121 without needing to manage a side
table.

1 files changed, 9 insertions, 4 deletions

diff --git a/src/librustc_resolve/macros.rs b/src/librustc_resolve/macros.rs
index 1b6268dc8cb..7027c826267 100644
--- a/src/librustc_resolve/macros.rs
+++ b/src/librustc_resolve/macros.rs
@@ -186,6 +186,7 @@ impl<'a> base::Resolver for Resolver<'a> {
             call_site,
             self.session.edition(),
             features.into(),
+            None,
         )));
 
         let parent_scope = if let Some(module_id) = parent_module_id {
@@ -290,13 +291,17 @@ impl<'a> base::Resolver for Resolver<'a> {
         let (ext, res) = self.smart_resolve_macro_path(path, kind, parent_scope, force)?;
 
         let span = invoc.span();
-        invoc_id.set_expn_data(ext.expn_data(parent_scope.expansion, span, fast_print_path(path)));
-
-        if let Res::Def(_, def_id) = res {
+        invoc_id.set_expn_data(ext.expn_data(
+            parent_scope.expansion,
+            span,
+            fast_print_path(path),
+            res.opt_def_id(),
+        ));
+
+        if let Res::Def(_, _) = res {
             if after_derive {
                 self.session.span_err(span, "macro attributes must be placed before `#[derive]`");
             }
-            self.macro_defs.insert(invoc_id, def_id);
             let normal_module_def_id = self.macro_def_scope(invoc_id).normal_ancestor_id;
             self.definitions.add_parent_module_of_macro_def(invoc_id, normal_module_def_id);
         }