Allow query system to recover a HirId.

2022-09-09 12:05:01 +02:00
parent 744e397d88
commit 6019cbbfd3
2 changed files with 37 additions and 7 deletions
--- a/compiler/rustc_query_system/src/dep_graph/mod.rs
+++ b/compiler/rustc_query_system/src/dep_graph/mod.rs
@@ -94,6 +94,8 @@ impl<T: DepContext> HasDepContext for T {
 pub enum FingerprintStyle {
    /// The fingerprint is actually a DefPathHash.
    DefPathHash,
+    /// The fingerprint is actually a HirId.
+    HirId,
    /// Query key was `()` or equivalent, so fingerprint is just zero.
    Unit,
    /// Some opaque hash.
@@ -104,7 +106,9 @@ impl FingerprintStyle {
    #[inline]
    pub fn reconstructible(self) -> bool {
        match self {
-            FingerprintStyle::DefPathHash | FingerprintStyle::Unit => true,
+            FingerprintStyle::DefPathHash | FingerprintStyle::Unit | FingerprintStyle::HirId => {
+                true
+            }
            FingerprintStyle::Opaque => false,
        }
    }