diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index 6793ea9f485f3..b34d54fd9c82c 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -1797,8 +1797,10 @@ impl PrimitiveType {
             sym::bool => Some(PrimitiveType::Bool),
             sym::char => Some(PrimitiveType::Char),
             sym::str => Some(PrimitiveType::Str),
+            sym::f16 => Some(PrimitiveType::F16),
             sym::f32 => Some(PrimitiveType::F32),
             sym::f64 => Some(PrimitiveType::F64),
+            sym::f128 => Some(PrimitiveType::F128),
             sym::array => Some(PrimitiveType::Array),
             sym::slice => Some(PrimitiveType::Slice),
             sym::tuple => Some(PrimitiveType::Tuple),
@@ -1831,8 +1833,10 @@ impl PrimitiveType {
                 U32 => single(SimplifiedType::Uint(UintTy::U32)),
                 U64 => single(SimplifiedType::Uint(UintTy::U64)),
                 U128 => single(SimplifiedType::Uint(UintTy::U128)),
+                F16 => single(SimplifiedType::Float(FloatTy::F16)),
                 F32 => single(SimplifiedType::Float(FloatTy::F32)),
                 F64 => single(SimplifiedType::Float(FloatTy::F64)),
+                F128 => single(SimplifiedType::Float(FloatTy::F128)),
                 Str => single(SimplifiedType::Str),
                 Bool => single(SimplifiedType::Bool),
                 Char => single(SimplifiedType::Char),
diff --git a/src/librustdoc/passes/collect_intra_doc_links.rs b/src/librustdoc/passes/collect_intra_doc_links.rs
index a5c264290138a..a9fb0b56df917 100644
--- a/src/librustdoc/passes/collect_intra_doc_links.rs
+++ b/src/librustdoc/passes/collect_intra_doc_links.rs
@@ -536,8 +536,10 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
             I64 => tcx.types.i64,
             I128 => tcx.types.i128,
             Isize => tcx.types.isize,
+            F16 => tcx.types.f16,
             F32 => tcx.types.f32,
             F64 => tcx.types.f64,
+            F128 => tcx.types.f128,
             U8 => tcx.types.u8,
             U16 => tcx.types.u16,
             U32 => tcx.types.u32,
@@ -2196,8 +2198,10 @@ fn resolve_primitive(path_str: &str, ns: Namespace) -> Option<Res> {
         "u32" => U32,
         "u64" => U64,
         "u128" => U128,
+        "f16" => F16,
         "f32" => F32,
         "f64" => F64,
+        "f128" => F128,
         "char" => Char,
         "bool" | "true" | "false" => Bool,
         "str" | "&str" => Str,
diff --git a/tests/rustdoc/primitive/primitive.rs b/tests/rustdoc/primitive/primitive.rs
index 32af2636c18b0..4b89fd9dfb731 100644
--- a/tests/rustdoc/primitive/primitive.rs
+++ b/tests/rustdoc/primitive/primitive.rs
@@ -1,6 +1,8 @@
 #![crate_name = "foo"]
 
 #![feature(rustc_attrs)]
+#![feature(f16)]
+#![feature(f128)]
 
 // @has foo/index.html '//h2[@id="primitives"]' 'Primitive Types'
 // @has foo/index.html '//a[@href="primitive.i32.html"]' 'i32'
@@ -13,9 +15,19 @@
 // @!has foo/index.html '//span' '🔒'
 #[rustc_doc_primitive = "i32"]
 /// this is a test!
-mod i32{}
+mod i32 {}
 
 // @has foo/primitive.bool.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'hello'
 #[rustc_doc_primitive = "bool"]
 /// hello
 mod bool {}
+
+// @has foo/primitive.f16.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'hello'
+#[rustc_doc_primitive = "f16"]
+/// hello
+mod f16 {}
+
+// @has foo/primitive.f128.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'hello'
+#[rustc_doc_primitive = "f128"]
+/// hello
+mod f128 {}