Implement `#[define_opaque]` attribute for functions.

2 files changed, 8 insertions, 3 deletions

diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs
index 928455ace85..1c54b99b12f 100644
--- a/compiler/rustc_hir/src/hir.rs
+++ b/compiler/rustc_hir/src/hir.rs
@@ -1307,13 +1307,18 @@ impl Attribute {
 #[derive(Debug)]
 pub struct AttributeMap<'tcx> {
     pub map: SortedMap<ItemLocalId, &'tcx [Attribute]>,
+    /// Preprocessed `#[define_opaque]` attribute.
+    pub define_opaque: Option<&'tcx [LocalDefId]>,
     // Only present when the crate hash is needed.
     pub opt_hash: Option<Fingerprint>,
 }
 
 impl<'tcx> AttributeMap<'tcx> {
-    pub const EMPTY: &'static AttributeMap<'static> =
-        &AttributeMap { map: SortedMap::new(), opt_hash: Some(Fingerprint::ZERO) };
+    pub const EMPTY: &'static AttributeMap<'static> = &AttributeMap {
+        map: SortedMap::new(),
+        opt_hash: Some(Fingerprint::ZERO),
+        define_opaque: None,
+    };
 
     #[inline]
     pub fn get(&self, id: ItemLocalId) -> &'tcx [Attribute] {
diff --git a/compiler/rustc_hir/src/stable_hash_impls.rs b/compiler/rustc_hir/src/stable_hash_impls.rs
index 2709a826549..91ea88cae47 100644
--- a/compiler/rustc_hir/src/stable_hash_impls.rs
+++ b/compiler/rustc_hir/src/stable_hash_impls.rs
@@ -106,7 +106,7 @@ impl<'tcx, HirCtx: crate::HashStableContext> HashStable<HirCtx> for AttributeMap
     fn hash_stable(&self, hcx: &mut HirCtx, hasher: &mut StableHasher) {
         // We ignore the `map` since it refers to information included in `opt_hash` which is
         // hashed in the collector and used for the crate hash.
-        let AttributeMap { opt_hash, map: _ } = *self;
+        let AttributeMap { opt_hash, define_opaque: _, map: _ } = *self;
         opt_hash.unwrap().hash_stable(hcx, hasher);
     }
 }