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-rw-r--r--compiler/rustc_trait_selection/src/traits/select/confirmation.rs10
-rw-r--r--compiler/rustc_trait_selection/src/traits/select/mod.rs10
2 files changed, 10 insertions, 10 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
index 24c6951a014..27bdc1da7df 100644
--- a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
@@ -14,8 +14,8 @@ use rustc_infer::infer::{DefineOpaqueTypes, InferOk};
 use rustc_infer::traits::ObligationCauseCode;
 use rustc_middle::traits::{BuiltinImplSource, SignatureMismatchData};
 use rustc_middle::ty::{
-    self, GenericArgs, GenericArgsRef, GenericParamDefKind, ToPolyTraitRef, ToPredicate,
-    TraitPredicate, Ty, TyCtxt,
+    self, GenericArgs, GenericArgsRef, GenericParamDefKind, ToPolyTraitRef, TraitPredicate, Ty,
+    TyCtxt, Upcast,
 };
 use rustc_middle::{bug, span_bug};
 use rustc_span::def_id::DefId;
@@ -676,7 +676,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
                     let assoc_ty_args = tcx.mk_args(&args);
                     let bound =
                         bound.map_bound(|b| b.kind().skip_binder()).instantiate(tcx, assoc_ty_args);
-                    ty::Binder::bind_with_vars(bound, bound_vars).to_predicate(tcx)
+                    ty::Binder::bind_with_vars(bound, bound_vars).upcast(tcx)
                 };
                 let normalized_bound = normalize_with_depth_to(
                     self,
@@ -1253,13 +1253,13 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
                     tcx.require_lang_item(LangItem::Sized, Some(obligation.cause.span)),
                     [source],
                 );
-                nested.push(predicate_to_obligation(tr.to_predicate(tcx)));
+                nested.push(predicate_to_obligation(tr.upcast(tcx)));
 
                 // If the type is `Foo + 'a`, ensure that the type
                 // being cast to `Foo + 'a` outlives `'a`:
                 let outlives = ty::OutlivesPredicate(source, r);
                 nested.push(predicate_to_obligation(
-                    ty::Binder::dummy(ty::ClauseKind::TypeOutlives(outlives)).to_predicate(tcx),
+                    ty::Binder::dummy(ty::ClauseKind::TypeOutlives(outlives)).upcast(tcx),
                 ));
 
                 ImplSource::Builtin(BuiltinImplSource::Misc, nested)
diff --git a/compiler/rustc_trait_selection/src/traits/select/mod.rs b/compiler/rustc_trait_selection/src/traits/select/mod.rs
index 5b25c62689f..501d6f6fd8f 100644
--- a/compiler/rustc_trait_selection/src/traits/select/mod.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/mod.rs
@@ -45,7 +45,7 @@ use rustc_middle::ty::abstract_const::NotConstEvaluatable;
 use rustc_middle::ty::print::PrintTraitRefExt as _;
 use rustc_middle::ty::relate::TypeRelation;
 use rustc_middle::ty::GenericArgsRef;
-use rustc_middle::ty::{self, PolyProjectionPredicate, ToPredicate};
+use rustc_middle::ty::{self, PolyProjectionPredicate, Upcast};
 use rustc_middle::ty::{Ty, TyCtxt, TypeFoldable, TypeVisitableExt};
 use rustc_span::symbol::sym;
 use rustc_span::Symbol;
@@ -740,7 +740,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
                             let cycle = stack.iter().take_while(|s| s.depth > stack_arg.1);
                             let tcx = self.tcx();
                             let cycle =
-                                cycle.map(|stack| stack.obligation.predicate.to_predicate(tcx));
+                                cycle.map(|stack| stack.obligation.predicate.upcast(tcx));
                             if self.coinductive_match(cycle) {
                                 stack.update_reached_depth(stack_arg.1);
                                 return Ok(EvaluatedToOk);
@@ -1174,7 +1174,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
             // if the regions match exactly.
             let cycle = stack.iter().skip(1).take_while(|s| s.depth >= cycle_depth);
             let tcx = self.tcx();
-            let cycle = cycle.map(|stack| stack.obligation.predicate.to_predicate(tcx));
+            let cycle = cycle.map(|stack| stack.obligation.predicate.upcast(tcx));
             if self.coinductive_match(cycle) {
                 debug!("evaluate_stack --> recursive, coinductive");
                 Some(EvaluatedToOk)
@@ -1379,7 +1379,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
         error_obligation: &Obligation<'tcx, T>,
     ) -> Result<(), OverflowError>
     where
-        T: ToPredicate<'tcx> + Clone,
+        T: Upcast<'tcx> + Clone,
     {
         if !self.infcx.tcx.recursion_limit().value_within_limit(depth) {
             match self.query_mode {
@@ -1408,7 +1408,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
         error_obligation: &Obligation<'tcx, V>,
     ) -> Result<(), OverflowError>
     where
-        V: ToPredicate<'tcx> + Clone,
+        V: Upcast<'tcx> + Clone,
     {
         self.check_recursion_depth(obligation.recursion_depth, error_obligation)
     }