give apply_param_substs a SharedCrateContext

I plan to put a cache on the shared context, for now at least.

src/librustc_trans/base.rs

@@ -1128,7 +1128,7 @@ pub fn trans_instance<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, instance: Instance
 
     let fn_ty = ccx.tcx().lookup_item_type(instance.def).ty;
     let fn_ty = ccx.tcx().erase_regions(&fn_ty);
-    let fn_ty = monomorphize::apply_param_substs(ccx.tcx(), instance.substs, &fn_ty);
+    let fn_ty = monomorphize::apply_param_substs(ccx.shared(), instance.substs, &fn_ty);
 
     let sig = ccx.tcx().erase_late_bound_regions(fn_ty.fn_sig());
     let sig = ccx.tcx().normalize_associated_type(&sig);
@@ -1151,7 +1151,7 @@ pub fn trans_ctor_shim<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
     attributes::set_frame_pointer_elimination(ccx, llfndecl);
 
     let ctor_ty = ccx.tcx().lookup_item_type(def_id).ty;
-    let ctor_ty = monomorphize::apply_param_substs(ccx.tcx(), substs, &ctor_ty);
+    let ctor_ty = monomorphize::apply_param_substs(ccx.shared(), substs, &ctor_ty);
 
     let sig = ccx.tcx().erase_late_bound_regions(&ctor_ty.fn_sig());
     let sig = ccx.tcx().normalize_associated_type(&sig);
@@ -1894,7 +1894,7 @@ fn collect_and_partition_translation_items<'a, 'tcx>(scx: &SharedCrateContext<'a
     };
 
     let codegen_units = time(time_passes, "codegen unit partitioning", || {
-        partitioning::partition(scx.tcx(),
+        partitioning::partition(scx,
                                 items.iter().cloned(),
                                 strategy,
                                 &inlining_map,

src/librustc_trans/callee.rs

@@ -28,7 +28,7 @@ use base;
 use base::*;
 use build::*;
 use closure;
-use common::{self, Block, Result, CrateContext, FunctionContext};
+use common::{self, Block, Result, CrateContext, FunctionContext, SharedCrateContext};
 use consts;
 use debuginfo::DebugLoc;
 use declare;
@@ -37,7 +37,7 @@ use monomorphize::{self, Instance};
 use trans_item::TransItem;
 use type_of;
 use Disr;
-use rustc::ty::{self, Ty, TyCtxt, TypeFoldable};
+use rustc::ty::{self, Ty, TypeFoldable};
 use rustc::hir;
 
 use syntax_pos::DUMMY_SP;
@@ -97,7 +97,7 @@ impl<'tcx> Callee<'tcx> {
             return Callee::trait_method(ccx, trait_id, def_id, substs);
         }
 
-        let fn_ty = def_ty(tcx, def_id, substs);
+        let fn_ty = def_ty(ccx.shared(), def_id, substs);
         if let ty::TyFnDef(_, _, f) = fn_ty.sty {
             if f.abi == Abi::RustIntrinsic || f.abi == Abi::PlatformIntrinsic {
                 return Callee {
@@ -155,20 +155,20 @@ impl<'tcx> Callee<'tcx> {
                                                          vtable_closure.substs,
                                                          trait_closure_kind);
 
-                let method_ty = def_ty(tcx, def_id, substs);
+                let method_ty = def_ty(ccx.shared(), def_id, substs);
                 Callee::ptr(llfn, method_ty)
             }
             traits::VtableFnPointer(vtable_fn_pointer) => {
                 let trait_closure_kind = tcx.lang_items.fn_trait_kind(trait_id).unwrap();
                 let llfn = trans_fn_pointer_shim(ccx, trait_closure_kind, vtable_fn_pointer.fn_ty);
 
-                let method_ty = def_ty(tcx, def_id, substs);
+                let method_ty = def_ty(ccx.shared(), def_id, substs);
                 Callee::ptr(llfn, method_ty)
             }
             traits::VtableObject(ref data) => {
                 Callee {
                     data: Virtual(tcx.get_vtable_index_of_object_method(data, def_id)),
-                    ty: def_ty(tcx, def_id, substs)
+                    ty: def_ty(ccx.shared(), def_id, substs)
                 }
             }
             vtable => {
@@ -244,12 +244,12 @@ impl<'tcx> Callee<'tcx> {
 }
 
 /// Given a DefId and some Substs, produces the monomorphic item type.
-fn def_ty<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
+fn def_ty<'a, 'tcx>(shared: &SharedCrateContext<'a, 'tcx>,
                     def_id: DefId,
                     substs: &'tcx Substs<'tcx>)
                     -> Ty<'tcx> {
-    let ty = tcx.lookup_item_type(def_id).ty;
-    monomorphize::apply_param_substs(tcx, substs, &ty)
+    let ty = shared.tcx().lookup_item_type(def_id).ty;
+    monomorphize::apply_param_substs(shared, substs, &ty)
 }
 
 /// Translates an adapter that implements the `Fn` trait for a fn
@@ -407,7 +407,7 @@ fn get_fn<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
     let substs = tcx.normalize_associated_type(&substs);
     let instance = Instance::new(def_id, substs);
     let item_ty = ccx.tcx().lookup_item_type(def_id).ty;
-    let fn_ty = monomorphize::apply_param_substs(ccx.tcx(), substs, &item_ty);
+    let fn_ty = monomorphize::apply_param_substs(ccx.shared(), substs, &item_ty);
 
     if let Some(&llfn) = ccx.instances().borrow().get(&instance) {
         return (llfn, fn_ty);

src/librustc_trans/collector.rs

@@ -459,7 +459,7 @@ impl<'a, 'tcx> MirVisitor<'tcx> for MirNeighborCollector<'a, 'tcx> {
                     format!("Could not find MIR for closure: {:?}", def_id)
                 });
 
-                let concrete_substs = monomorphize::apply_param_substs(self.scx.tcx(),
+                let concrete_substs = monomorphize::apply_param_substs(self.scx,
                                                                        self.param_substs,
                                                                        &substs.func_substs);
                 let concrete_substs = self.scx.tcx().erase_regions(&concrete_substs);
@@ -477,11 +477,11 @@ impl<'a, 'tcx> MirVisitor<'tcx> for MirNeighborCollector<'a, 'tcx> {
             // have to instantiate all methods of the trait being cast to, so we
             // can build the appropriate vtable.
             mir::Rvalue::Cast(mir::CastKind::Unsize, ref operand, target_ty) => {
-                let target_ty = monomorphize::apply_param_substs(self.scx.tcx(),
+                let target_ty = monomorphize::apply_param_substs(self.scx,
                                                                  self.param_substs,
                                                                  &target_ty);
                 let source_ty = operand.ty(self.mir, self.scx.tcx());
-                let source_ty = monomorphize::apply_param_substs(self.scx.tcx(),
+                let source_ty = monomorphize::apply_param_substs(self.scx,
                                                                  self.param_substs,
                                                                  &source_ty);
                 let (source_ty, target_ty) = find_vtable_types_for_unsizing(self.scx,
@@ -508,7 +508,7 @@ impl<'a, 'tcx> MirVisitor<'tcx> for MirNeighborCollector<'a, 'tcx> {
                 assert!(can_have_local_instance(self.scx.tcx(), exchange_malloc_fn_def_id));
                 let empty_substs = self.scx.empty_substs_for_def_id(exchange_malloc_fn_def_id);
                 let exchange_malloc_fn_trans_item =
-                    create_fn_trans_item(self.scx.tcx(),
+                    create_fn_trans_item(self.scx,
                                          exchange_malloc_fn_def_id,
                                          empty_substs,
                                          self.param_substs);
@@ -531,7 +531,7 @@ impl<'a, 'tcx> MirVisitor<'tcx> for MirNeighborCollector<'a, 'tcx> {
             let ty = lvalue.ty(self.mir, self.scx.tcx())
                            .to_ty(self.scx.tcx());
 
-            let ty = monomorphize::apply_param_substs(self.scx.tcx(),
+            let ty = monomorphize::apply_param_substs(self.scx,
                                                       self.param_substs,
                                                       &ty);
             assert!(ty.is_normalized_for_trans());
@@ -555,7 +555,7 @@ impl<'a, 'tcx> MirVisitor<'tcx> for MirNeighborCollector<'a, 'tcx> {
                     // references to `const` items
                     if let mir::Literal::Item { def_id, substs } = constant.literal {
                         let tcx = self.scx.tcx();
-                        let substs = monomorphize::apply_param_substs(tcx,
+                        let substs = monomorphize::apply_param_substs(self.scx,
                                                                       self.param_substs,
                                                                       &substs);
 
@@ -613,7 +613,7 @@ impl<'a, 'tcx> MirVisitor<'tcx> for MirNeighborCollector<'a, 'tcx> {
                 // result in a translation item ...
                 if can_result_in_trans_item(self.scx.tcx(), callee_def_id) {
                     // ... and create one if it does.
-                    let trans_item = create_fn_trans_item(self.scx.tcx(),
+                    let trans_item = create_fn_trans_item(self.scx,
                                                           callee_def_id,
                                                           callee_substs,
                                                           self.param_substs);
@@ -670,7 +670,7 @@ impl<'a, 'tcx> MirVisitor<'tcx> for MirNeighborCollector<'a, 'tcx> {
                         if is_drop_in_place_intrinsic(tcx, def_id, bare_fn_ty) => {
                         let operand_ty = args[0].ty(self.mir, tcx);
                         if let ty::TyRawPtr(mt) = operand_ty.sty {
-                            let operand_ty = monomorphize::apply_param_substs(tcx,
+                            let operand_ty = monomorphize::apply_param_substs(self.scx,
                                                                               self.param_substs,
                                                                               &mt.ty);
                             let ty = glue::get_drop_glue_type(tcx, operand_ty);
@@ -732,7 +732,7 @@ fn find_drop_glue_neighbors<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
         assert!(can_have_local_instance(scx.tcx(), exchange_free_fn_def_id));
         let fn_substs = scx.empty_substs_for_def_id(exchange_free_fn_def_id);
         let exchange_free_fn_trans_item =
-            create_fn_trans_item(scx.tcx(),
+            create_fn_trans_item(scx,
                                  exchange_free_fn_def_id,
                                  fn_substs,
                                  Substs::empty(scx.tcx()));
@@ -769,7 +769,7 @@ fn find_drop_glue_neighbors<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
         };
 
         if can_have_local_instance(scx.tcx(), destructor_did) {
-            let trans_item = create_fn_trans_item(scx.tcx(),
+            let trans_item = create_fn_trans_item(scx,
                                                   destructor_did,
                                                   substs,
                                                   Substs::empty(scx.tcx()));
@@ -800,7 +800,7 @@ fn find_drop_glue_neighbors<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
         ty::TyStruct(ref adt_def, substs) |
         ty::TyEnum(ref adt_def, substs) => {
             for field in adt_def.all_fields() {
-                let field_type = monomorphize::apply_param_substs(scx.tcx(),
+                let field_type = monomorphize::apply_param_substs(scx,
                                                                   substs,
                                                                   &field.unsubst_ty());
                 let field_type = glue::get_drop_glue_type(scx.tcx(), field_type);
@@ -894,8 +894,7 @@ fn do_static_trait_method_dispatch<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
            callee_substs,
            param_substs);
 
-
-    let rcvr_substs = monomorphize::apply_param_substs(tcx,
+    let rcvr_substs = monomorphize::apply_param_substs(scx,
                                                        param_substs,
                                                        &callee_substs);
     let trait_ref = ty::TraitRef::from_method(tcx, trait_id, rcvr_substs);
@@ -1016,11 +1015,13 @@ fn find_vtable_types_for_unsizing<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
     }
 }
 
-fn create_fn_trans_item<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
+fn create_fn_trans_item<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
                                   def_id: DefId,
                                   fn_substs: &'tcx Substs<'tcx>,
                                   param_substs: &'tcx Substs<'tcx>)
                                   -> TransItem<'tcx> {
+    let tcx = scx.tcx();
+
     debug!("create_fn_trans_item(def_id={}, fn_substs={:?}, param_substs={:?})",
             def_id_to_string(tcx, def_id),
             fn_substs,
@@ -1029,7 +1030,7 @@ fn create_fn_trans_item<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
     // We only get here, if fn_def_id either designates a local item or
     // an inlineable external item. Non-inlineable external items are
     // ignored because we don't want to generate any code for them.
-    let concrete_substs = monomorphize::apply_param_substs(tcx,
+    let concrete_substs = monomorphize::apply_param_substs(scx,
                                                            param_substs,
                                                            &fn_substs);
     assert!(concrete_substs.is_normalized_for_trans());
@@ -1063,7 +1064,7 @@ fn create_trans_items_for_vtable_methods<'a, 'tcx>(scx: &SharedCrateContext<'a,
                         // create translation items
                         .filter_map(|impl_method| {
                             if can_have_local_instance(scx.tcx(), impl_method.method.def_id) {
-                                Some(create_fn_trans_item(scx.tcx(),
+                                Some(create_fn_trans_item(scx,
                                     impl_method.method.def_id,
                                     impl_method.substs,
                                     Substs::empty(scx.tcx())))
@@ -1114,7 +1115,7 @@ impl<'b, 'a, 'v> hir_visit::Visitor<'v> for RootCollector<'b, 'a, 'v> {
 
             hir::ItemImpl(..) => {
                 if self.mode == TransItemCollectionMode::Eager {
-                    create_trans_items_for_default_impls(self.scx.tcx(),
+                    create_trans_items_for_default_impls(self.scx,
                                                          item,
                                                          self.output);
                 }
@@ -1202,9 +1203,10 @@ impl<'b, 'a, 'v> hir_visit::Visitor<'v> for RootCollector<'b, 'a, 'v> {
     }
 }
 
-fn create_trans_items_for_default_impls<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
+fn create_trans_items_for_default_impls<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
                                                   item: &'tcx hir::Item,
                                                   output: &mut Vec<TransItem<'tcx>>) {
+    let tcx = scx.tcx();
     match item.node {
         hir::ItemImpl(_,
                       _,
@@ -1255,7 +1257,7 @@ fn create_trans_items_for_default_impls<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
 
                     if can_have_local_instance(tcx, method.def_id) {
                         let empty_substs = tcx.erase_regions(&mth.substs);
-                        let item = create_fn_trans_item(tcx,
+                        let item = create_fn_trans_item(scx,
                                                         method.def_id,
                                                         callee_substs,
                                                         empty_substs);

src/librustc_trans/common.rs

@@ -350,7 +350,7 @@ impl<'a, 'tcx> FunctionContext<'a, 'tcx> {
     pub fn monomorphize<T>(&self, value: &T) -> T
         where T: TransNormalize<'tcx>
     {
-        monomorphize::apply_param_substs(self.ccx.tcx(),
+        monomorphize::apply_param_substs(self.ccx.shared(),
                                          self.param_substs,
                                          value)
     }
@@ -519,7 +519,7 @@ impl<'blk, 'tcx> BlockS<'blk, 'tcx> {
     pub fn monomorphize<T>(&self, value: &T) -> T
         where T: TransNormalize<'tcx>
     {
-        monomorphize::apply_param_substs(self.tcx(),
+        monomorphize::apply_param_substs(self.fcx.ccx.shared(),
                                          self.fcx.param_substs,
                                          value)
     }

src/librustc_trans/debuginfo/mod.rs

@@ -414,7 +414,7 @@ pub fn create_function_debug_context<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
             if cx.tcx().trait_id_of_impl(impl_def_id).is_none() {
                 let impl_self_ty = cx.tcx().lookup_item_type(impl_def_id).ty;
                 let impl_self_ty = cx.tcx().erase_regions(&impl_self_ty);
-                let impl_self_ty = monomorphize::apply_param_substs(cx.tcx(),
+                let impl_self_ty = monomorphize::apply_param_substs(cx.shared(),
                                                                     instance.substs,
                                                                     &impl_self_ty);
 

src/librustc_trans/mir/constant.rs

@@ -258,7 +258,7 @@ impl<'a, 'tcx> MirConstContext<'a, 'tcx> {
     fn monomorphize<T>(&self, value: &T) -> T
         where T: TransNormalize<'tcx>
     {
-        monomorphize::apply_param_substs(self.ccx.tcx(),
+        monomorphize::apply_param_substs(self.ccx.shared(),
                                          self.substs,
                                          value)
     }

src/librustc_trans/monomorphize.rs

@@ -42,12 +42,13 @@ impl<'tcx> Instance<'tcx> {
 
 /// Monomorphizes a type from the AST by first applying the in-scope
 /// substitutions and then normalizing any associated types.
-pub fn apply_param_substs<'a, 'tcx, T>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
+pub fn apply_param_substs<'a, 'tcx, T>(scx: &SharedCrateContext<'a, 'tcx>,
                                        param_substs: &Substs<'tcx>,
                                        value: &T)
                                        -> T
     where T: TransNormalize<'tcx>
 {
+    let tcx = scx.tcx();
     debug!("apply_param_substs(param_substs={:?}, value={:?})", param_substs, value);
     let substituted = value.subst(tcx, param_substs);
     debug!("apply_param_substs: substituted={:?}{}",
@@ -65,3 +66,4 @@ pub fn field_ty<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
 {
     tcx.normalize_associated_type(&f.ty(tcx, param_substs))
 }
+