| 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 | |