1 files changed, 13 insertions, 2 deletions
diff --git a/compiler/rustc_middle/src/hir/map/mod.rs b/compiler/rustc_middle/src/hir/map/mod.rs
index 3ca26ec98c6..58c0c6bab49 100644
--- a/compiler/rustc_middle/src/hir/map/mod.rs
+++ b/compiler/rustc_middle/src/hir/map/mod.rs
@@ -6,7 +6,7 @@ use rustc_ast as ast;
 use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_data_structures::svh::Svh;
-use rustc_data_structures::sync::{par_for_each_in, DynSend, DynSync};
+use rustc_data_structures::sync::{par_for_each_in, try_par_for_each_in, DynSend, DynSync};
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{DefId, LocalDefId, LocalModDefId, LOCAL_CRATE};
 use rustc_hir::definitions::{DefKey, DefPath, DefPathData, DefPathHash};
@@ -16,7 +16,7 @@ use rustc_index::Idx;
 use rustc_middle::hir::nested_filter;
 use rustc_span::def_id::StableCrateId;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
-use rustc_span::Span;
+use rustc_span::{ErrorGuaranteed, Span};
 use rustc_target::spec::abi::Abi;
 
 #[inline]
@@ -632,6 +632,17 @@ impl<'hir> Map<'hir> {
         })
     }
 
+    #[inline]
+    pub fn try_par_for_each_module(
+        self,
+        f: impl Fn(LocalModDefId) -> Result<(), ErrorGuaranteed> + DynSend + DynSync,
+    ) -> Result<(), ErrorGuaranteed> {
+        let crate_items = self.tcx.hir_crate_items(());
+        try_par_for_each_in(&crate_items.submodules[..], |module| {
+            f(LocalModDefId::new_unchecked(module.def_id))
+        })
+    }
+
     /// Returns an iterator for the nodes in the ancestor tree of the `current_id`
     /// until the crate root is reached. Prefer this over your own loop using `parent_id`.
     #[inline]