threads-def-order-stopgap.patch

diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs
index 8975f01de..eb0c39a27 100644
--- a/compiler/rustc_interface/src/passes.rs
+++ b/compiler/rustc_interface/src/passes.rs
@@ -1104,6 +1105,29 @@ fn run_required_analyses(tcx: TyCtxt<'_>) {
     // to use `hir_crate_items`.
     tcx.ensure_done().hir_crate_items(());
 
+    // mirth: testing only (docs/hunt/threads-def-order-stopgap.patch). Under the parallel front
+    // end, definitions that queries make get indices in whatever order threads reach them, so
+    // metadata tables indexed by definition differ from build to build (rust-lang/rust#162202).
+    // Make them here, on one thread and in definition order, while the order is deterministic.
+    if tcx.sess.opts.jobs.frontend.is_some() {
+        let items = tcx.hir_crate_items(());
+        for owner in items.owners() {
+            tcx.ensure_done().resolve_bound_vars(owner);
+        }
+        for def_id in items.definitions() {
+            match tcx.def_kind(def_id) {
+                rustc_hir::def::DefKind::Trait | rustc_hir::def::DefKind::Impl { .. } => {
+                    tcx.ensure_done()
+                        .associated_types_for_impl_traits_in_trait_or_impl(def_id.to_def_id());
+                }
+                rustc_hir::def::DefKind::Closure
+                    if tcx.needs_coroutine_by_move_body_def_id(def_id.to_def_id()) => {
+                    tcx.ensure_done().coroutine_by_move_body_def_id(def_id.to_def_id());
+                }
+                _ => {}
+            }
+        }
+    }
     tcx.untracked().definitions.write().commit_end_of_determinism();
 
     rustc_passes::delegation::check_glob_and_list_delegations_target_expr(tcx);