Merging upstream version 1.72.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 12 insertions, 1 deletions

diff --git a/compiler/rustc_query_system/src/dep_graph/dep_node.rs b/compiler/rustc_query_system/src/dep_graph/dep_node.rs
index 9e1ca6ab5..39a4cb1b1 100644
--- a/compiler/rustc_query_system/src/dep_graph/dep_node.rs
+++ b/compiler/rustc_query_system/src/dep_graph/dep_node.rs
@@ -46,7 +46,7 @@ use super::{DepContext, DepKind, FingerprintStyle};
 use crate::ich::StableHashingContext;
 
 use rustc_data_structures::fingerprint::{Fingerprint, PackedFingerprint};
-use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
+use rustc_data_structures::stable_hasher::{HashStable, StableHasher, StableOrd, ToStableHashKey};
 use rustc_hir::definitions::DefPathHash;
 use std::fmt;
 use std::hash::Hash;
@@ -247,3 +247,14 @@ impl<HCX> HashStable<HCX> for WorkProductId {
         self.hash.hash_stable(hcx, hasher)
     }
 }
+impl<HCX> ToStableHashKey<HCX> for WorkProductId {
+    type KeyType = Fingerprint;
+    #[inline]
+    fn to_stable_hash_key(&self, _: &HCX) -> Self::KeyType {
+        self.hash
+    }
+}
+unsafe impl StableOrd for WorkProductId {
+    // Fingerprint can use unstable (just a tuple of `u64`s), so WorkProductId can as well
+    const CAN_USE_UNSTABLE_SORT: bool = true;
+}