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-rw-r--r--compiler/rustc_span/src/def_id.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_span/src/def_id.rs b/compiler/rustc_span/src/def_id.rs
index f05328ac1b4..6004009c6ff 100644
--- a/compiler/rustc_span/src/def_id.rs
+++ b/compiler/rustc_span/src/def_id.rs
@@ -186,6 +186,7 @@ impl StableCrateId {
         StableCrateId(hasher.finish())
     }
 
+    #[inline]
     pub fn as_u64(self) -> u64 {
         self.0.as_u64()
     }