llvm-project/clang/test/CodeGenCXX/explicit-instantiation.cpp

46 lines
1.2 KiB
C++

// RUN: %clang_cc1 -emit-llvm -triple i686-pc-linux-gnu -o - %s | FileCheck %s
// This check logically is attached to 'template int S<int>::i;' below.
// CHECK: @_ZN1SIiE1iE = weak global i32
template<typename T, typename U, typename Result>
struct plus {
Result operator()(const T& t, const U& u) const;
};
template<typename T, typename U, typename Result>
Result plus<T, U, Result>::operator()(const T& t, const U& u) const {
return t + u;
}
// CHECK: define weak_odr i32 @_ZNK4plusIillEclERKiRKl
template struct plus<int, long, long>;
// Check that we emit definitions from explicit instantiations even when they
// occur prior to the definition itself.
template <typename T> struct S {
void f();
static void g();
static int i;
struct S2 {
void h();
};
};
// CHECK: define weak_odr void @_ZN1SIiE1fEv
template void S<int>::f();
// CHECK: define weak_odr void @_ZN1SIiE1gEv
template void S<int>::g();
// See the check line at the top of the file.
template int S<int>::i;
// CHECK: define weak_odr void @_ZN1SIiE2S21hEv
template void S<int>::S2::h();
template <typename T> void S<T>::f() {}
template <typename T> void S<T>::g() {}
template <typename T> int S<T>::i;
template <typename T> void S<T>::S2::h() {}