2 files changed, 20 insertions, 0 deletions
diff --git a/compiler/rustc_attr_data_structures/src/attributes.rs b/compiler/rustc_attr_data_structures/src/attributes.rs
index 2cbb7270785..b656db32528 100644
--- a/compiler/rustc_attr_data_structures/src/attributes.rs
+++ b/compiler/rustc_attr_data_structures/src/attributes.rs
@@ -240,6 +240,9 @@ pub enum AttributeKind {
     /// Represents [`#[doc]`](https://doc.rust-lang.org/stable/rustdoc/write-documentation/the-doc-attribute.html).
     DocComment { style: AttrStyle, kind: CommentKind, span: Span, comment: Symbol },
 
+    /// Represents `#[rustc_dummy]`.
+    Dummy,
+
     /// Represents [`#[export_name]`](https://doc.rust-lang.org/reference/abi.html#the-export_name-attribute).
     ExportName {
         /// The name to export this item with.
@@ -248,6 +251,15 @@ pub enum AttributeKind {
         span: Span,
     },
 
+    /// Represents `#[export_stable]`.
+    ExportStable,
+
+    /// Represents `#[ffi_const]`.
+    FfiConst(Span),
+
+    /// Represents `#[ffi_pure]`.
+    FfiPure(Span),
+
     /// Represents `#[ignore]`
     Ignore {
         span: Span,
@@ -326,6 +338,9 @@ pub enum AttributeKind {
         span: Span,
     },
 
+    /// Represents `#[rustc_std_internal_symbol]`.
+    StdInternalSymbol(Span),
+
     /// Represents `#[target_feature(enable = "...")]`
     TargetFeature(ThinVec<(Symbol, Span)>, Span),
 
diff --git a/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs b/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs
index a6ae49d2808..5414c7b103b 100644
--- a/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs
+++ b/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs
@@ -25,7 +25,11 @@ impl AttributeKind {
             ConstStabilityIndirect => No,
             Deprecation { .. } => Yes,
             DocComment { .. } => Yes,
+            Dummy => No,
             ExportName { .. } => Yes,
+            ExportStable => No,
+            FfiConst(..) => No,
+            FfiPure(..) => No,
             Ignore { .. } => No,
             Inline(..) => No,
             LinkName { .. } => Yes,
@@ -48,6 +52,7 @@ impl AttributeKind {
             RustcObjectLifetimeDefault => No,
             SkipDuringMethodDispatch { .. } => No,
             Stability { .. } => Yes,
+            StdInternalSymbol(..) => No,
             TargetFeature(..) => No,
             TrackCaller(..) => Yes,
             Used { .. } => No,