use ParamEnv from ty rather than importing

src/librustc/infer/mod.rs

@@ -28,7 +28,7 @@ use middle::lang_items;
 use mir::tcx::LvalueTy;
 use ty::subst::{Kind, Subst, Substs};
 use ty::{TyVid, IntVid, FloatVid};
-use ty::{self, ParamEnv, Ty, TyCtxt};
+use ty::{self, Ty, TyCtxt};
 use ty::error::{ExpectedFound, TypeError, UnconstrainedNumeric};
 use ty::fold::{TypeFoldable, TypeFolder, TypeVisitor};
 use ty::relate::{Relate, RelateResult, TypeRelation};
@@ -526,7 +526,7 @@ impl<'a, 'gcx, 'tcx> InferCtxtBuilder<'a, 'gcx, 'tcx> {
         let tables = tables.map(InferTables::Interned).unwrap_or_else(|| {
             fresh_tables.as_ref().map_or(InferTables::Missing, InferTables::InProgress)
         });
-        let param_env = param_env.take().unwrap_or_else(|| ParamEnv::empty());
+        let param_env = param_env.take().unwrap_or_else(|| ty::ParamEnv::empty());
         global_tcx.enter_local(arena, |tcx| f(InferCtxt {
             tcx: tcx,
             tables: tables,

src/librustc_borrowck/borrowck/mir/gather_moves.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 
-use rustc::ty::{self, TyCtxt, ParamEnv};
+use rustc::ty::{self, TyCtxt};
 use rustc::mir::*;
 use rustc::util::nodemap::FxHashMap;
 use rustc_data_structures::indexed_vec::{IndexVec};
@@ -191,7 +191,7 @@ pub struct MovePathLookup<'tcx> {
 struct MoveDataBuilder<'a, 'tcx: 'a> {
     mir: &'a Mir<'tcx>,
     tcx: TyCtxt<'a, 'tcx, 'tcx>,
-    param_env: ParamEnv<'tcx>,
+    param_env: ty::ParamEnv<'tcx>,
     data: MoveData<'tcx>,
 }
 
@@ -203,7 +203,7 @@ pub enum MovePathError {
 impl<'a, 'tcx> MoveDataBuilder<'a, 'tcx> {
     fn new(mir: &'a Mir<'tcx>,
            tcx: TyCtxt<'a, 'tcx, 'tcx>,
-           param_env: ParamEnv<'tcx>)
+           param_env: ty::ParamEnv<'tcx>)
            -> Self {
         let mut move_paths = IndexVec::new();
         let mut path_map = IndexVec::new();
@@ -370,7 +370,7 @@ impl<'tcx> MovePathLookup<'tcx> {
 impl<'a, 'tcx> MoveData<'tcx> {
     pub fn gather_moves(mir: &Mir<'tcx>,
                         tcx: TyCtxt<'a, 'tcx, 'tcx>,
-                        param_env: ParamEnv<'tcx>)
+                        param_env: ty::ParamEnv<'tcx>)
                         -> Self {
         gather_moves(mir, tcx, param_env)
     }
@@ -378,7 +378,7 @@ impl<'a, 'tcx> MoveData<'tcx> {
 
 fn gather_moves<'a, 'tcx>(mir: &Mir<'tcx>,
                           tcx: TyCtxt<'a, 'tcx, 'tcx>,
-                          param_env: ParamEnv<'tcx>)
+                          param_env: ty::ParamEnv<'tcx>)
                           -> MoveData<'tcx> {
     let mut builder = MoveDataBuilder::new(mir, tcx, param_env);
 

src/librustc_passes/consts.rs

@@ -38,7 +38,7 @@ use rustc::middle::expr_use_visitor as euv;
 use rustc::middle::mem_categorization as mc;
 use rustc::middle::mem_categorization::Categorization;
 use rustc::mir::transform::MirSource;
-use rustc::ty::{self, ParamEnv, Ty, TyCtxt};
+use rustc::ty::{self, Ty, TyCtxt};
 use rustc::traits::Reveal;
 use rustc::util::common::ErrorReported;
 use rustc::util::nodemap::NodeSet;
@@ -466,7 +466,7 @@ pub fn check_crate<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>) {
         in_fn: false,
         promotable: false,
         mut_rvalue_borrows: NodeSet(),
-        param_env: ParamEnv::empty(),
+        param_env: ty::ParamEnv::empty(),
     }.as_deep_visitor());
     tcx.sess.abort_if_errors();
 }

src/librustc_trans/context.rs

@@ -24,7 +24,7 @@ use partitioning::CodegenUnit;
 use type_::Type;
 use rustc_data_structures::base_n;
 use rustc::ty::subst::Substs;
-use rustc::ty::{self, ParamEnv, Ty, TyCtxt};
+use rustc::ty::{self, Ty, TyCtxt};
 use rustc::ty::layout::{LayoutTyper, TyLayout};
 use session::config::NoDebugInfo;
 use session::Session;
@@ -321,15 +321,15 @@ impl<'b, 'tcx> SharedCrateContext<'b, 'tcx> {
     }
 
     pub fn type_needs_drop(&self, ty: Ty<'tcx>) -> bool {
-        ty.needs_drop(self.tcx, ParamEnv::empty())
+        ty.needs_drop(self.tcx, ty::ParamEnv::empty())
     }
 
     pub fn type_is_sized(&self, ty: Ty<'tcx>) -> bool {
-        ty.is_sized(self.tcx, ParamEnv::empty(), DUMMY_SP)
+        ty.is_sized(self.tcx, ty::ParamEnv::empty(), DUMMY_SP)
     }
 
     pub fn type_is_freeze(&self, ty: Ty<'tcx>) -> bool {
-        ty.is_freeze(self.tcx, ParamEnv::empty(), DUMMY_SP)
+        ty.is_freeze(self.tcx, ty::ParamEnv::empty(), DUMMY_SP)
     }
 
     pub fn exported_symbols<'a>(&'a self) -> &'a NodeSet {