Don't specify the fields in struct initializer

Author: antoyo

src/common.rs

@@ -186,10 +186,7 @@ impl<'gcc, 'tcx> ConstMethods<'tcx> for CodegenCx<'gcc, 'tcx> {
         // TODO(antoyo): cache the type? It's anonymous, so probably not.
         let typ = self.type_struct(&fields, packed);
         let struct_type = typ.is_struct().expect("struct type");
-        let struct_fields = self.struct_fields.borrow();
-        let fields = struct_fields.get(&typ)
-            .expect("struct fields");
-        self.context.new_struct_constructor(None, struct_type.as_type(), &fields, values)
+        self.context.new_struct_constructor(None, struct_type.as_type(), None, values)
     }
 
     fn const_to_opt_uint(&self, _v: RValue<'gcc>) -> Option<u64> {

src/context.rs

@@ -71,7 +71,6 @@ pub struct CodegenCx<'gcc, 'tcx> {
     pub tcx: TyCtxt<'tcx>,
 
     pub struct_types: RefCell<FxHashMap<Vec<Type<'gcc>>, Type<'gcc>>>,
-    pub struct_fields: RefCell<FxHashMap<Type<'gcc>, Vec<Field<'gcc>>>>,
 
     pub types_with_fields_to_set: RefCell<FxHashMap<Type<'gcc>, (Struct<'gcc>, TyAndLayout<'tcx>)>>,
 
@@ -202,7 +201,6 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
             types: Default::default(),
             tcx,
             struct_types: Default::default(),
-            struct_fields: Default::default(),
             types_with_fields_to_set: Default::default(),
             local_gen_sym_counter: Cell::new(0),
             global_gen_sym_counter: Cell::new(0),

src/type_.rs

@@ -115,7 +115,6 @@ impl<'gcc, 'tcx> BaseTypeMethods<'tcx> for CodegenCx<'gcc, 'tcx> {
         // TODO(antoyo): use packed.
         let typ = self.context.new_struct_type(None, "struct", &fields).as_type();
         self.struct_types.borrow_mut().insert(types, typ);
-        self.struct_fields.borrow_mut().insert(typ, fields);
         typ
     }
 
@@ -216,7 +215,6 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
             .map(|(index, field)| self.context.new_field(None, *field, &format!("field_{}", index)))
             .collect();
         typ.set_fields(None, &fields);
-        self.struct_fields.borrow_mut().insert(typ.as_type(), fields);
     }
 
     pub fn type_named_struct(&self, name: &str) -> Struct<'gcc> {