xref: /minix3/external/bsd/llvm/dist/clang/test/CodeGenCXX/explicit-instantiation.cpp (revision f4a2713ac843a11c696ec80c0a5e3e5d80b4d338)
1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -emit-llvm -triple i686-pc-linux-gnu -o - %s | FileCheck %s
2*f4a2713aSLionel Sambuc 
3*f4a2713aSLionel Sambuc // This check logically is attached to 'template int S<int>::i;' below.
4*f4a2713aSLionel Sambuc // CHECK: @_ZN1SIiE1iE = weak_odr global i32
5*f4a2713aSLionel Sambuc 
6*f4a2713aSLionel Sambuc template<typename T, typename U, typename Result>
7*f4a2713aSLionel Sambuc struct plus {
8*f4a2713aSLionel Sambuc   Result operator()(const T& t, const U& u) const;
9*f4a2713aSLionel Sambuc };
10*f4a2713aSLionel Sambuc 
11*f4a2713aSLionel Sambuc template<typename T, typename U, typename Result>
12*f4a2713aSLionel Sambuc Result plus<T, U, Result>::operator()(const T& t, const U& u) const {
13*f4a2713aSLionel Sambuc   return t + u;
14*f4a2713aSLionel Sambuc }
15*f4a2713aSLionel Sambuc 
16*f4a2713aSLionel Sambuc // CHECK-LABEL: define weak_odr i32 @_ZNK4plusIillEclERKiRKl
17*f4a2713aSLionel Sambuc template struct plus<int, long, long>;
18*f4a2713aSLionel Sambuc 
19*f4a2713aSLionel Sambuc // Check that we emit definitions from explicit instantiations even when they
20*f4a2713aSLionel Sambuc // occur prior to the definition itself.
21*f4a2713aSLionel Sambuc template <typename T> struct S {
22*f4a2713aSLionel Sambuc   void f();
23*f4a2713aSLionel Sambuc   static void g();
24*f4a2713aSLionel Sambuc   static int i;
25*f4a2713aSLionel Sambuc   struct S2 {
26*f4a2713aSLionel Sambuc     void h();
27*f4a2713aSLionel Sambuc   };
28*f4a2713aSLionel Sambuc };
29*f4a2713aSLionel Sambuc 
30*f4a2713aSLionel Sambuc // CHECK-LABEL: define weak_odr void @_ZN1SIiE1fEv
31*f4a2713aSLionel Sambuc template void S<int>::f();
32*f4a2713aSLionel Sambuc 
33*f4a2713aSLionel Sambuc // CHECK-LABEL: define weak_odr void @_ZN1SIiE1gEv
34*f4a2713aSLionel Sambuc template void S<int>::g();
35*f4a2713aSLionel Sambuc 
36*f4a2713aSLionel Sambuc // See the check line at the top of the file.
37*f4a2713aSLionel Sambuc template int S<int>::i;
38*f4a2713aSLionel Sambuc 
39*f4a2713aSLionel Sambuc // CHECK-LABEL: define weak_odr void @_ZN1SIiE2S21hEv
40*f4a2713aSLionel Sambuc template void S<int>::S2::h();
41*f4a2713aSLionel Sambuc 
42*f4a2713aSLionel Sambuc template <typename T> void S<T>::f() {}
43*f4a2713aSLionel Sambuc template <typename T> void S<T>::g() {}
44*f4a2713aSLionel Sambuc template <typename T> int S<T>::i;
45*f4a2713aSLionel Sambuc template <typename T> void S<T>::S2::h() {}
46