1 files changed, 37 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/middle/mod.rs b/compiler/rustc_middle/src/middle/mod.rs
new file mode 100644
index 000000000..8dc68b1f5
--- /dev/null
+++ b/compiler/rustc_middle/src/middle/mod.rs
@@ -0,0 +1,37 @@
+pub mod codegen_fn_attrs;
+pub mod dependency_format;
+pub mod exported_symbols;
+pub mod lang_items;
+pub mod lib_features {
+    use rustc_data_structures::fx::FxHashMap;
+    use rustc_span::{symbol::Symbol, Span};
+
+    #[derive(HashStable, Debug)]
+    pub struct LibFeatures {
+        /// A map from feature to stabilisation version.
+        pub stable: FxHashMap<Symbol, (Symbol, Span)>,
+        pub unstable: FxHashMap<Symbol, Span>,
+    }
+
+    impl LibFeatures {
+        pub fn to_vec(&self) -> Vec<(Symbol, Option<Symbol>)> {
+            let mut all_features: Vec<_> = self
+                .stable
+                .iter()
+                .map(|(f, (s, _))| (*f, Some(*s)))
+                .chain(self.unstable.iter().map(|(f, _)| (*f, None)))
+                .collect();
+            all_features.sort_unstable_by(|a, b| a.0.as_str().partial_cmp(b.0.as_str()).unwrap());
+            all_features
+        }
+    }
+}
+pub mod limits;
+pub mod privacy;
+pub mod region;
+pub mod resolve_lifetime;
+pub mod stability;
+
+pub fn provide(providers: &mut crate::ty::query::Providers) {
+    limits::provide(providers);
+}