1 files changed, 0 insertions, 54 deletions
diff --git a/compiler/rustc_ty_utils/src/stalled_generators.rs b/compiler/rustc_ty_utils/src/stalled_generators.rs
deleted file mode 100644
index 8b45e8b0f6f..00000000000
--- a/compiler/rustc_ty_utils/src/stalled_generators.rs
+++ /dev/null
@@ -1,54 +0,0 @@
-use rustc_hir as hir;
-use rustc_hir::def_id::{DefId, LocalDefId};
-use rustc_hir::intravisit;
-use rustc_hir::intravisit::Visitor;
-use rustc_middle::query::Providers;
-use rustc_middle::ty::{self, TyCtxt};
-
-fn stalled_generators_within<'tcx>(
-    tcx: TyCtxt<'tcx>,
-    item: LocalDefId,
-) -> &'tcx ty::List<LocalDefId> {
-    if !tcx.next_trait_solver_globally() {
-        return ty::List::empty();
-    }
-
-    let body = tcx.hir_body_owned_by(item);
-    let mut collector =
-        StalledGeneratorVisitor { tcx, root_def_id: item.to_def_id(), stalled_coroutines: vec![] };
-    collector.visit_body(body);
-    tcx.mk_local_def_ids(&collector.stalled_coroutines)
-}
-
-struct StalledGeneratorVisitor<'tcx> {
-    tcx: TyCtxt<'tcx>,
-    root_def_id: DefId,
-    stalled_coroutines: Vec<LocalDefId>,
-}
-
-impl<'tcx> Visitor<'tcx> for StalledGeneratorVisitor<'tcx> {
-    fn visit_nested_body(&mut self, id: hir::BodyId) {
-        if self.tcx.typeck_root_def_id(self.tcx.hir_body_owner_def_id(id).to_def_id())
-            == self.root_def_id
-        {
-            let body = self.tcx.hir_body(id);
-            self.visit_body(body);
-        }
-    }
-
-    fn visit_expr(&mut self, ex: &'tcx hir::Expr<'tcx>) {
-        if let hir::ExprKind::Closure(&hir::Closure {
-            def_id,
-            kind: hir::ClosureKind::Coroutine(_),
-            ..
-        }) = ex.kind
-        {
-            self.stalled_coroutines.push(def_id);
-        }
-        intravisit::walk_expr(self, ex);
-    }
-}
-
-pub(super) fn provide(providers: &mut Providers) {
-    *providers = Providers { stalled_generators_within, ..*providers };
-}