1 | // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -O0 -o - %s | FileCheck %s |
2 | |
3 | // Test that we do not assume that entities marked with the |
4 | // exclude_from_explicit_instantiation attribute are instantiated |
5 | // in another TU when an extern template instantiation declaration |
6 | // is present. We test that by making sure that definitions are |
7 | // generated in this TU despite there being an extern template |
8 | // instantiation declaration, which is normally not the case. |
9 | |
10 | #define EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__((exclude_from_explicit_instantiation)) |
11 | |
12 | template <class T> |
13 | struct Foo { |
14 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION inline void non_static_member_function1(); |
15 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION void non_static_member_function2(); |
16 | |
17 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION static inline void static_member_function1(); |
18 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION static void static_member_function2(); |
19 | |
20 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION static int static_data_member; |
21 | |
22 | struct EXCLUDE_FROM_EXPLICIT_INSTANTIATION member_class1 { |
23 | static void static_member_function() { } |
24 | }; |
25 | |
26 | struct member_class2 { |
27 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION static void static_member_function() { } |
28 | }; |
29 | }; |
30 | |
31 | template <class T> inline void Foo<T>::non_static_member_function1() { } |
32 | template <class T> void Foo<T>::non_static_member_function2() { } |
33 | |
34 | template <class T> inline void Foo<T>::static_member_function1() { } |
35 | template <class T> void Foo<T>::static_member_function2() { } |
36 | |
37 | template <class T> int Foo<T>::static_data_member = 0; |
38 | |
39 | extern template struct Foo<int>; |
40 | |
41 | void use() { |
42 | Foo<int> f; |
43 | |
44 | // An inline non-static member function marked with the attribute is not |
45 | // part of the extern template declaration, so a definition must be emitted |
46 | // in this TU. |
47 | // CHECK-DAG: define linkonce_odr void @_ZN3FooIiE27non_static_member_function1Ev |
48 | f.non_static_member_function1(); |
49 | |
50 | // A non-inline non-static member function marked with the attribute is |
51 | // not part of the extern template declaration, so a definition must be |
52 | // emitted in this TU. |
53 | // CHECK-DAG: define linkonce_odr void @_ZN3FooIiE27non_static_member_function2Ev |
54 | f.non_static_member_function2(); |
55 | |
56 | // An inline static member function marked with the attribute is not |
57 | // part of the extern template declaration, so a definition must be |
58 | // emitted in this TU. |
59 | // CHECK-DAG: define linkonce_odr void @_ZN3FooIiE23static_member_function1Ev |
60 | Foo<int>::static_member_function1(); |
61 | |
62 | // A non-inline static member function marked with the attribute is not |
63 | // part of the extern template declaration, so a definition must be |
64 | // emitted in this TU. |
65 | // CHECK-DAG: define linkonce_odr void @_ZN3FooIiE23static_member_function2Ev |
66 | Foo<int>::static_member_function2(); |
67 | |
68 | // A static data member marked with the attribute is not part of the |
69 | // extern template declaration, so a definition must be emitted in this TU. |
70 | // CHECK-DAG: @_ZN3FooIiE18static_data_memberE = linkonce_odr global |
71 | int& odr_use = Foo<int>::static_data_member; |
72 | |
73 | // A member class marked with the attribute is not part of the extern |
74 | // template declaration (it is not recursively instantiated), so its member |
75 | // functions must be emitted in this TU. |
76 | // CHECK-DAG: define linkonce_odr void @_ZN3FooIiE13member_class122static_member_functionEv |
77 | Foo<int>::member_class1::static_member_function(); |
78 | |
79 | // A member function marked with the attribute in a member class is not |
80 | // part of the extern template declaration of the parent class template, so |
81 | // it must be emitted in this TU. |
82 | // CHECK-DAG: define linkonce_odr void @_ZN3FooIiE13member_class222static_member_functionEv |
83 | Foo<int>::member_class2::static_member_function(); |
84 | } |
85 | |