clang/test/CXX/temp/temp.spec/temp.explicit/p9-linkage.cpp

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-passes -emit-llvm -std=c++11 -o - %s | FileCheck %s
   2
   3 template<typename T>
   4 struct X0 {
   5   void f(T &t) {
   6     t = 0;
   7   }
   8
   9   void g(T &t);
  10
  11   void h(T &t);
  12
  13   static T static_var;
  14 };
  15
  16 template<typename T>
  17 inline void X0<T>::g(T & t) {
  18   t = 0;
  19 }
  20
  21 template<typename T>
  22 void X0<T>::h(T & t) {
  23   t = 0;
  24 }
  25
  26 template<typename T>
  27 T X0<T>::static_var = 0;
  28
  29 extern template struct X0<int*>;
  30
  31 int *&test(X0<int*> xi, int *ip) {
  32   // CHECK: define available_externally void @_ZN2X0IPiE1fERS0_
  33   xi.f(ip);
  34   // CHECK: define available_externally void @_ZN2X0IPiE1gERS0_
  35   xi.g(ip);
  36   // CHECK: declare void @_ZN2X0IPiE1hERS0_
  37   xi.h(ip);
  38   return X0<int*>::static_var;
  39 }
  40
  41 template<typename T>
  42 void f0(T& t) {
  43   t = 0;
  44 }
  45
  46 template<typename T>
  47 inline void f1(T& t) {
  48   t = 0;
  49 }
  50
  51 extern template void f0<>(int *&);
  52 extern template void f1<>(int *&);
  53
  54 void test_f0(int *ip, float *fp) {
  55   // CHECK: declare void @_Z2f0IPiEvRT_
  56   f0(ip);
  57   // CHECK: define linkonce_odr void @_Z2f0IPfEvRT_
  58   f0(fp);
  59 }
  60
  61 void test_f1(int *ip, float *fp) {
  62   // CHECK: define available_externally void @_Z2f1IPiEvRT_
  63   f1(ip);
  64   // CHECK: define linkonce_odr void @_Z2f1IPfEvRT_
  65   f1(fp);
  66 }