diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index d928b41cad49a..a00d30cb42a10 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -1555,23 +1555,10 @@ impl Type {
 
     /// Use this method to get the [DefId] of a [clean] AST node, including [PrimitiveType]s.
     ///
-    /// See [`Self::def_id_no_primitives`] for more.
-    ///
     /// [clean]: crate::clean
     crate fn def_id(&self, cache: &Cache) -> Option<DefId> {
         self.inner_def_id(Some(cache))
     }
-
-    /// Use this method to get the [`DefId`] of a [`clean`] AST node.
-    /// This will return [`None`] when called on a primitive [`clean::Type`].
-    /// Use [`Self::def_id`] if you want to include primitives.
-    ///
-    /// [`clean`]: crate::clean
-    /// [`clean::Type`]: crate::clean::Type
-    // FIXME: get rid of this function and always use `def_id`
-    crate fn def_id_no_primitives(&self) -> Option<DefId> {
-        self.inner_def_id(None)
-    }
 }
 
 /// A primitive (aka, builtin) type.
diff --git a/src/librustdoc/html/render/cache.rs b/src/librustdoc/html/render/cache.rs
index 631eacc961828..cf046e4e12967 100644
--- a/src/librustdoc/html/render/cache.rs
+++ b/src/librustdoc/html/render/cache.rs
@@ -261,7 +261,7 @@ crate fn get_real_types<'tcx>(
         tcx: TyCtxt<'_>,
         ty: Type,
         mut generics: Vec<TypeWithKind>,
-        _cache: &Cache,
+        cache: &Cache,
     ) {
         let is_full_generic = ty.is_full_generic();
 
@@ -320,7 +320,7 @@ crate fn get_real_types<'tcx>(
             // We remove the name of the full generic because we have no use for it.
             index_ty.name = Some(String::new());
             res.push(TypeWithKind::from((index_ty, ItemType::Generic)));
-        } else if let Some(kind) = ty.def_id_no_primitives().map(|did| tcx.def_kind(did).into()) {
+        } else if let Some(kind) = ty.def_id(cache).map(|did| tcx.def_kind(did).into()) {
             res.push(TypeWithKind::from((index_ty, kind)));
         } else if ty.is_primitive() {
             // This is a primitive, let's store it as such.
@@ -338,9 +338,7 @@ crate fn get_real_types<'tcx>(
     if let Type::Generic(arg_s) = *arg {
         // First we check if the bounds are in a `where` predicate...
         if let Some(where_pred) = generics.where_predicates.iter().find(|g| match g {
-            WherePredicate::BoundPredicate { ty, .. } => {
-                ty.def_id_no_primitives() == arg.def_id_no_primitives()
-            }
+            WherePredicate::BoundPredicate { ty, .. } => ty.def_id(cache) == arg.def_id(cache),
             _ => false,
         }) {
             let mut ty_generics = Vec::new();
@@ -413,8 +411,7 @@ crate fn get_all_types<'tcx>(
         if !args.is_empty() {
             all_types.extend(args);
         } else {
-            if let Some(kind) = arg.type_.def_id_no_primitives().map(|did| tcx.def_kind(did).into())
-            {
+            if let Some(kind) = arg.type_.def_id(cache).map(|did| tcx.def_kind(did).into()) {
                 all_types.push(TypeWithKind::from((get_index_type(&arg.type_, vec![]), kind)));
             }
         }
@@ -425,9 +422,7 @@ crate fn get_all_types<'tcx>(
         FnRetTy::Return(ref return_type) => {
             get_real_types(generics, return_type, tcx, 0, &mut ret_types, cache);
             if ret_types.is_empty() {
-                if let Some(kind) =
-                    return_type.def_id_no_primitives().map(|did| tcx.def_kind(did).into())
-                {
+                if let Some(kind) = return_type.def_id(cache).map(|did| tcx.def_kind(did).into()) {
                     ret_types.push(TypeWithKind::from((get_index_type(return_type, vec![]), kind)));
                 }
             }
diff --git a/src/librustdoc/passes/collect_trait_impls.rs b/src/librustdoc/passes/collect_trait_impls.rs
index 5884fdc715ab8..0b68597c6a024 100644
--- a/src/librustdoc/passes/collect_trait_impls.rs
+++ b/src/librustdoc/passes/collect_trait_impls.rs
@@ -6,6 +6,7 @@ use crate::clean::*;
 use crate::core::DocContext;
 use crate::visit::DocVisitor;
 
+use crate::formats::cache::Cache;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_hir::def_id::DefId;
 use rustc_middle::ty::DefIdTree;
@@ -55,14 +56,14 @@ crate fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> Crate
         }
     }
 
-    let mut cleaner = BadImplStripper { prims, items: crate_items };
+    let mut cleaner = BadImplStripper { prims, items: crate_items, cache: &cx.cache };
     let mut type_did_to_deref_target: FxHashMap<DefId, &Type> = FxHashMap::default();
 
     // Follow all `Deref` targets of included items and recursively add them as valid
     fn add_deref_target(
         cx: &DocContext<'_>,
         map: &FxHashMap<DefId, &Type>,
-        cleaner: &mut BadImplStripper,
+        cleaner: &mut BadImplStripper<'_>,
         type_did: DefId,
     ) {
         if let Some(target) = map.get(&type_did) {
@@ -100,7 +101,7 @@ crate fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> Crate
                 } else if let Some(did) = target.def_id(&cx.cache) {
                     cleaner.items.insert(did.into());
                 }
-                if let Some(for_did) = for_.def_id_no_primitives() {
+                if let Some(for_did) = for_.def_id(&cx.cache) {
                     if type_did_to_deref_target.insert(for_did, target).is_none() {
                         // Since only the `DefId` portion of the `Type` instances is known to be same for both the
                         // `Deref` target type and the impl for type positions, this map of types is keyed by
@@ -205,19 +206,20 @@ impl DocVisitor for ItemCollector {
     }
 }
 
-struct BadImplStripper {
+struct BadImplStripper<'a> {
     prims: FxHashSet<PrimitiveType>,
     items: FxHashSet<ItemId>,
+    cache: &'a Cache,
 }
 
-impl BadImplStripper {
+impl<'a> BadImplStripper<'a> {
     fn keep_impl(&self, ty: &Type, is_deref: bool) -> bool {
         if let Generic(_) = ty {
             // keep impls made on generics
             true
         } else if let Some(prim) = ty.primitive_type() {
             self.prims.contains(&prim)
-        } else if let Some(did) = ty.def_id_no_primitives() {
+        } else if let Some(did) = ty.def_id(&self.cache) {
             is_deref || self.keep_impl_with_def_id(did.into())
         } else {
             false
diff --git a/src/librustdoc/passes/strip_hidden.rs b/src/librustdoc/passes/strip_hidden.rs
index e63534659add7..e7a99ee7bfd84 100644
--- a/src/librustdoc/passes/strip_hidden.rs
+++ b/src/librustdoc/passes/strip_hidden.rs
@@ -15,7 +15,7 @@ crate const STRIP_HIDDEN: Pass = Pass {
 };
 
 /// Strip items marked `#[doc(hidden)]`
-crate fn strip_hidden(krate: clean::Crate, _: &mut DocContext<'_>) -> clean::Crate {
+crate fn strip_hidden(krate: clean::Crate, cx: &mut DocContext<'_>) -> clean::Crate {
     let mut retained = ItemIdSet::default();
 
     // strip all #[doc(hidden)] items
@@ -25,7 +25,7 @@ crate fn strip_hidden(krate: clean::Crate, _: &mut DocContext<'_>) -> clean::Cra
     };
 
     // strip all impls referencing stripped items
-    let mut stripper = ImplStripper { retained: &retained };
+    let mut stripper = ImplStripper { retained: &retained, cache: &cx.cache };
     stripper.fold_crate(krate)
 }
 
diff --git a/src/librustdoc/passes/strip_private.rs b/src/librustdoc/passes/strip_private.rs
index c6b5bec4692dc..ef7e768a51149 100644
--- a/src/librustdoc/passes/strip_private.rs
+++ b/src/librustdoc/passes/strip_private.rs
@@ -29,6 +29,6 @@ crate fn strip_private(mut krate: clean::Crate, cx: &mut DocContext<'_>) -> clea
     }
 
     // strip all impls referencing private items
-    let mut stripper = ImplStripper { retained: &retained };
+    let mut stripper = ImplStripper { retained: &retained, cache: &cx.cache };
     stripper.fold_crate(krate)
 }
diff --git a/src/librustdoc/passes/stripper.rs b/src/librustdoc/passes/stripper.rs
index 675443b48a206..f0fb21a9be2ca 100644
--- a/src/librustdoc/passes/stripper.rs
+++ b/src/librustdoc/passes/stripper.rs
@@ -5,6 +5,7 @@ use std::mem;
 
 use crate::clean::{self, Item, ItemIdSet};
 use crate::fold::{strip_item, DocFolder};
+use crate::formats::cache::Cache;
 
 crate struct Stripper<'a> {
     crate retained: &'a mut ItemIdSet,
@@ -119,6 +120,7 @@ impl<'a> DocFolder for Stripper<'a> {
 /// This stripper discards all impls which reference stripped items
 crate struct ImplStripper<'a> {
     crate retained: &'a ItemIdSet,
+    crate cache: &'a Cache,
 }
 
 impl<'a> DocFolder for ImplStripper<'a> {
@@ -128,7 +130,7 @@ impl<'a> DocFolder for ImplStripper<'a> {
             if imp.trait_.is_none() && imp.items.is_empty() {
                 return None;
             }
-            if let Some(did) = imp.for_.def_id_no_primitives() {
+            if let Some(did) = imp.for_.def_id(&self.cache) {
                 if did.is_local() && !imp.for_.is_assoc_ty() && !self.retained.contains(&did.into())
                 {
                     debug!("ImplStripper: impl item for stripped type; removing");
@@ -143,7 +145,7 @@ impl<'a> DocFolder for ImplStripper<'a> {
             }
             if let Some(generics) = imp.trait_.as_ref().and_then(|t| t.generics()) {
                 for typaram in generics {
-                    if let Some(did) = typaram.def_id_no_primitives() {
+                    if let Some(did) = typaram.def_id(&self.cache) {
                         if did.is_local() && !self.retained.contains(&did.into()) {
                             debug!(
                                 "ImplStripper: stripped item in trait's generics; removing impl"