Prefer `Default::default` over `FxHash*::default` in struct constructors

2 files changed, 5 insertions, 13 deletions

diff --git a/src/librustc_codegen_llvm/debuginfo/metadata.rs b/src/librustc_codegen_llvm/debuginfo/metadata.rs
index 3c4e000854e..846d5056411 100644
--- a/src/librustc_codegen_llvm/debuginfo/metadata.rs
+++ b/src/librustc_codegen_llvm/debuginfo/metadata.rs
@@ -96,6 +96,7 @@ pub struct UniqueTypeId(ast::Name);
 // created so far. The metadata nodes are indexed by UniqueTypeId, and, for
 // faster lookup, also by Ty. The TypeMap is responsible for creating
 // UniqueTypeIds.
+#[derive(Default)]
 pub struct TypeMap<'ll, 'tcx> {
     // The UniqueTypeIds created so far
     unique_id_interner: Interner,
@@ -108,15 +109,6 @@ pub struct TypeMap<'ll, 'tcx> {
 }
 
 impl TypeMap<'ll, 'tcx> {
-    pub fn new() -> Self {
-        TypeMap {
-            unique_id_interner: Interner::new(),
-            type_to_metadata: FxHashMap::default(),
-            unique_id_to_metadata: FxHashMap::default(),
-            type_to_unique_id: FxHashMap::default(),
-        }
-    }
-
     // Adds a Ty to metadata mapping to the TypeMap. The method will fail if
     // the mapping already exists.
     fn register_type_with_metadata(
diff --git a/src/librustc_codegen_llvm/debuginfo/mod.rs b/src/librustc_codegen_llvm/debuginfo/mod.rs
index 2cd44b2a6c4..042e72e921e 100644
--- a/src/librustc_codegen_llvm/debuginfo/mod.rs
+++ b/src/librustc_codegen_llvm/debuginfo/mod.rs
@@ -100,11 +100,11 @@ impl<'a, 'tcx> CrateDebugContext<'a, 'tcx> {
             llcontext,
             llmod,
             builder,
-            created_files: RefCell::new(FxHashMap::default()),
-            created_enum_disr_types: RefCell::new(FxHashMap::default()),
-            type_map: RefCell::new(TypeMap::new()),
+            created_files: Default::default(),
+            created_enum_disr_types: Default::default(),
+            type_map: Default::default(),
             namespace_map: RefCell::new(DefIdMap()),
-            composite_types_completed: RefCell::new(FxHashSet::default()),
+            composite_types_completed: Default::default(),
         }
     }
 }