Use `List::empty()` instead of `mk_substs(&[])`.

4 files changed, 6 insertions, 6 deletions

diff --git a/compiler/rustc_codegen_gcc/src/context.rs b/compiler/rustc_codegen_gcc/src/context.rs
index fc746fbd599..457006319af 100644
--- a/compiler/rustc_codegen_gcc/src/context.rs
+++ b/compiler/rustc_codegen_gcc/src/context.rs
@@ -383,7 +383,7 @@ impl<'gcc, 'tcx> MiscMethods<'tcx> for CodegenCx<'gcc, 'tcx> {
                     tcx,
                     ty::ParamEnv::reveal_all(),
                     def_id,
-                    tcx.mk_substs(&[]),
+                    ty::List::empty(),
                 )
                 .unwrap().unwrap(),
             ),
diff --git a/compiler/rustc_codegen_llvm/src/context.rs b/compiler/rustc_codegen_llvm/src/context.rs
index 47dcbba59ac..3d29968d5d6 100644
--- a/compiler/rustc_codegen_llvm/src/context.rs
+++ b/compiler/rustc_codegen_llvm/src/context.rs
@@ -520,7 +520,7 @@ impl<'ll, 'tcx> MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
         let tcx = self.tcx;
         let llfn = match tcx.lang_items().eh_personality() {
             Some(def_id) if !wants_msvc_seh(self.sess()) => self.get_fn_addr(
-                ty::Instance::resolve(tcx, ty::ParamEnv::reveal_all(), def_id, tcx.mk_substs(&[]))
+                ty::Instance::resolve(tcx, ty::ParamEnv::reveal_all(), def_id, ty::List::empty())
                     .unwrap()
                     .unwrap(),
             ),
diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs
index 45c12d2938f..59540aaf18f 100644
--- a/compiler/rustc_lint/src/builtin.rs
+++ b/compiler/rustc_lint/src/builtin.rs
@@ -677,21 +677,21 @@ impl<'tcx> LateLintPass<'tcx> for MissingCopyImplementations {
                     return;
                 }
                 let def = cx.tcx.adt_def(item.owner_id);
-                (def, cx.tcx.mk_adt(def, cx.tcx.mk_substs(&[])))
+                (def, cx.tcx.mk_adt(def, ty::List::empty()))
             }
             hir::ItemKind::Union(_, ref ast_generics) => {
                 if !ast_generics.params.is_empty() {
                     return;
                 }
                 let def = cx.tcx.adt_def(item.owner_id);
-                (def, cx.tcx.mk_adt(def, cx.tcx.mk_substs(&[])))
+                (def, cx.tcx.mk_adt(def, ty::List::empty()))
             }
             hir::ItemKind::Enum(_, ref ast_generics) => {
                 if !ast_generics.params.is_empty() {
                     return;
                 }
                 let def = cx.tcx.adt_def(item.owner_id);
-                (def, cx.tcx.mk_adt(def, cx.tcx.mk_substs(&[])))
+                (def, cx.tcx.mk_adt(def, ty::List::empty()))
             }
             _ => return,
         };
diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs
index 7de9800d4c4..0d78c6135b3 100644
--- a/compiler/rustc_middle/src/mir/mod.rs
+++ b/compiler/rustc_middle/src/mir/mod.rs
@@ -2530,7 +2530,7 @@ impl<'tcx> ConstantKind<'tcx> {
         {
             InternalSubsts::identity_for_item(tcx, parent_did.to_def_id())
         } else {
-            tcx.mk_substs(&[])
+            List::empty()
         };
         debug!(?parent_substs);