From 6b1c52ff254c40b3b5f7a3e16db9cf3f8e9b35e0 Mon Sep 17 00:00:00 2001
From: Charles Lew <crlf0710@gmail.com>
Date: Wed, 18 Aug 2021 12:45:18 +0800
Subject: Fold `vtable_trait_upcasting_coercion_new_vptr_slot` logic into
 obligation processing.

---
 compiler/rustc_query_impl/src/keys.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'compiler/rustc_query_impl/src')

diff --git a/compiler/rustc_query_impl/src/keys.rs b/compiler/rustc_query_impl/src/keys.rs
index ace7cffd16d..38ab26d66ac 100644
--- a/compiler/rustc_query_impl/src/keys.rs
+++ b/compiler/rustc_query_impl/src/keys.rs
@@ -332,6 +332,16 @@ impl<'tcx> Key for Ty<'tcx> {
     }
 }
 
+impl<'tcx> Key for (Ty<'tcx>, Ty<'tcx>) {
+    #[inline(always)]
+    fn query_crate_is_local(&self) -> bool {
+        true
+    }
+    fn default_span(&self, _: TyCtxt<'_>) -> Span {
+        DUMMY_SP
+    }
+}
+
 impl<'tcx> Key for &'tcx ty::List<ty::Predicate<'tcx>> {
     #[inline(always)]
     fn query_crate_is_local(&self) -> bool {
-- 
cgit 1.4.1-3-g733a5