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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -O0 -o - %s | FileCheck %s
// Test that we do not assume that entities marked with the
// exclude_from_explicit_instantiation attribute are instantiated
// in another TU when an extern template instantiation declaration
// is present. We test that by making sure that definitions are
// generated in this TU despite there being an extern template
// instantiation declaration, which is normally not the case.
#define EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__((exclude_from_explicit_instantiation))
template <class T>
struct Foo {
EXCLUDE_FROM_EXPLICIT_INSTANTIATION inline void non_static_member_function1();
EXCLUDE_FROM_EXPLICIT_INSTANTIATION void non_static_member_function2();
EXCLUDE_FROM_EXPLICIT_INSTANTIATION static inline void static_member_function1();
EXCLUDE_FROM_EXPLICIT_INSTANTIATION static void static_member_function2();
EXCLUDE_FROM_EXPLICIT_INSTANTIATION static int static_data_member;
struct EXCLUDE_FROM_EXPLICIT_INSTANTIATION member_class1 {
static void static_member_function() { }
};
struct member_class2 {
EXCLUDE_FROM_EXPLICIT_INSTANTIATION static void static_member_function() { }
};
};
template <class T> inline void Foo<T>::non_static_member_function1() { }
template <class T> void Foo<T>::non_static_member_function2() { }
template <class T> inline void Foo<T>::static_member_function1() { }
template <class T> void Foo<T>::static_member_function2() { }
template <class T> int Foo<T>::static_data_member = 0;
extern template struct Foo<int>;
void use() {
Foo<int> f;
// An inline non-static member function marked with the attribute is not
// part of the extern template declaration, so a definition must be emitted
// in this TU.
// CHECK-DAG: define linkonce_odr void @_ZN3FooIiE27non_static_member_function1Ev
f.non_static_member_function1();
// A non-inline non-static member function marked with the attribute is
// not part of the extern template declaration, so a definition must be
// emitted in this TU.
// CHECK-DAG: define linkonce_odr void @_ZN3FooIiE27non_static_member_function2Ev
f.non_static_member_function2();
// An inline static member function marked with the attribute is not
// part of the extern template declaration, so a definition must be
// emitted in this TU.
// CHECK-DAG: define linkonce_odr void @_ZN3FooIiE23static_member_function1Ev
Foo<int>::static_member_function1();
// A non-inline static member function marked with the attribute is not
// part of the extern template declaration, so a definition must be
// emitted in this TU.
// CHECK-DAG: define linkonce_odr void @_ZN3FooIiE23static_member_function2Ev
Foo<int>::static_member_function2();
// A static data member marked with the attribute is not part of the
// extern template declaration, so a definition must be emitted in this TU.
// CHECK-DAG: @_ZN3FooIiE18static_data_memberE = linkonce_odr global
int& odr_use = Foo<int>::static_data_member;
// A member class marked with the attribute is not part of the extern
// template declaration (it is not recursively instantiated), so its member
// functions must be emitted in this TU.
// CHECK-DAG: define linkonce_odr void @_ZN3FooIiE13member_class122static_member_functionEv
Foo<int>::member_class1::static_member_function();
// A member function marked with the attribute in a member class is not
// part of the extern template declaration of the parent class template, so
// it must be emitted in this TU.
// CHECK-DAG: define linkonce_odr void @_ZN3FooIiE13member_class222static_member_functionEv
Foo<int>::member_class2::static_member_function();
}
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