initial revert

compiler/rustc_middle/src/ty/mod.rs

@@ -598,7 +598,7 @@ pub enum PredicateKind<'tcx> {
     Coerce(CoercePredicate<'tcx>),
 
     /// Constant initializer must evaluate successfully.
-    ConstEvaluatable(ty::Unevaluated<'tcx, ()>),
+    ConstEvaluatable(ty::WithOptConstParam<DefId>, SubstsRef<'tcx>),
 
     /// Constants must be equal. The first component is the const that is expected.
     ConstEquate(&'tcx Const<'tcx>, &'tcx Const<'tcx>),
@@ -1417,7 +1417,7 @@ impl<'tcx> ParamEnv<'tcx> {
             Reveal::UserFacing => ParamEnvAnd { param_env: self, value },
 
             Reveal::All => {
-                if value.is_known_global() {
+                if value.is_global() {
                     ParamEnvAnd { param_env: self.without_caller_bounds(), value }
                 } else {
                     ParamEnvAnd { param_env: self, value }