Remove opaque type obligation and just register opaque types as they are encountered.

This also registers obligations for the hidden type immediately.

1 files changed, 0 insertions, 6 deletions

diff --git a/compiler/rustc_middle/src/ty/structural_impls.rs b/compiler/rustc_middle/src/ty/structural_impls.rs
index 576f4121c42..5c7910db362 100644
--- a/compiler/rustc_middle/src/ty/structural_impls.rs
+++ b/compiler/rustc_middle/src/ty/structural_impls.rs
@@ -198,9 +198,6 @@ impl<'tcx> fmt::Debug for ty::PredicateKind<'tcx> {
             ty::PredicateKind::TypeWellFormedFromEnv(ty) => {
                 write!(f, "TypeWellFormedFromEnv({:?})", ty)
             }
-            ty::PredicateKind::OpaqueType(a, b) => {
-                write!(f, "OpaqueType({:?}, {:?})", a.kind(), b.kind())
-            }
         }
     }
 }
@@ -474,9 +471,6 @@ impl<'a, 'tcx> Lift<'tcx> for ty::PredicateKind<'a> {
             ty::PredicateKind::TypeWellFormedFromEnv(ty) => {
                 tcx.lift(ty).map(ty::PredicateKind::TypeWellFormedFromEnv)
             }
-            ty::PredicateKind::OpaqueType(opaque, ty) => {
-                Some(ty::PredicateKind::OpaqueType(tcx.lift(opaque)?, tcx.lift(ty)?))
-            }
         }
     }
 }