xref: /llvm-project/clang/test/CodeGenCXX/dllexport.cpp (revision 634430d5857e395cff62534b11c460f51c6c846a) 
1 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple i686-windows-msvc   -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O1 -mconstructor-aliases -disable-llvm-passes -o - %s -w -fms-compatibility-version=19.00 | FileCheck -allow-deprecated-dag-overlap --check-prefix=MSC --check-prefix=M32 -check-prefix=MSVC2015 %s
2 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple i686-windows-msvc   -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O1 -mconstructor-aliases -disable-llvm-passes -o - %s -w -fms-compatibility-version=18.00 | FileCheck -allow-deprecated-dag-overlap --check-prefix=MSC --check-prefix=M32 -check-prefix=MSVC2013 -check-prefix=M32MSVC2013 %s
3 
4 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-windows-msvc -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w -fms-compatibility-version=19.00 | FileCheck -allow-deprecated-dag-overlap --check-prefix=MSC --check-prefix=M64 -check-prefix=MSVC2015 %s
5 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-windows-msvc -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w -fms-compatibility-version=18.00 | FileCheck -allow-deprecated-dag-overlap --check-prefix=MSC --check-prefix=M64 -check-prefix=MSVC2013 %s
6 
7 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple i686-windows-gnu    -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w | FileCheck -allow-deprecated-dag-overlap --check-prefix=GNU --check-prefix=G32 %s
8 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-windows-gnu  -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w | FileCheck -allow-deprecated-dag-overlap --check-prefix=GNU %s
9 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-scei-ps4  -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w | FileCheck -allow-deprecated-dag-overlap --check-prefix=PS %s
10 // RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-sie-ps5  -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w | FileCheck -allow-deprecated-dag-overlap --check-prefix=PS %s
11 
12 // Helper structs to make templates more expressive.
13 struct ImplicitInst_Exported {};
14 struct ExplicitDecl_Exported {};
15 struct ExplicitInst_Exported {};
16 struct ExplicitSpec_Exported {};
17 struct ExplicitSpec_Def_Exported {};
18 struct ExplicitSpec_InlineDef_Exported {};
19 struct ExplicitSpec_NotExported {};
20 struct External { int v; };
21 
22 #define JOIN2(x, y) x##y
23 #define JOIN(x, y) JOIN2(x, y)
24 #define UNIQ(name) JOIN(name, __LINE__)
25 #define USEVAR(var) int UNIQ(use)() { return var; }
26 #define USE(func) void UNIQ(use)() { func(); }
27 #define USEMEMFUNC(class, func) void (class::*UNIQ(use)())() { return &class::func; }
28 #define INSTVAR(var) template int var;
29 #define INST(func) template void func();
30 
31 // The vftable for struct W is comdat largest because we have RTTI.
32 // M32-DAG: $"??_7W@@6B@" = comdat largest
33 
34 // M32-DAG: $"?smember@?$Base@H@PR32992@@0HA" = comdat any
35 
36 
37 //===----------------------------------------------------------------------===//
38 // Globals
39 //===----------------------------------------------------------------------===//
40 
41 // Declarations are not exported.
42 // MSC-NOT: @"?ExternGlobalDecl@@3HA"
43 // GNU-NOT: @ExternGlobalDecl
44 __declspec(dllexport) extern int ExternGlobalDecl;
45 
46 // M64-DAG: @__ImageBase = external dso_local constant i8
47 
48 // GNU-DAG: @_ZTVN10__cxxabiv117__class_type_infoE = external global
49 
50 // dllexport implies a definition.
51 // MSC-DAG: @"?GlobalDef@@3HA" = dso_local dllexport global i32 0, align 4
52 // GNU-DAG: @GlobalDef            = dso_local dllexport global i32 0, align 4
53 __declspec(dllexport) int GlobalDef;
54 
55 // Export definition.
56 // MSC-DAG: @"?GlobalInit1@@3HA" = dso_local dllexport global i32 1, align 4
57 // GNU-DAG: @GlobalInit1            = dso_local dllexport global i32 1, align 4
58 __declspec(dllexport) int GlobalInit1 = 1;
59 
60 // MSC-DAG: @"?GlobalInit2@@3HA" = dso_local dllexport global i32 1, align 4
61 // GNU-DAG: @GlobalInit2            = dso_local dllexport global i32 1, align 4
62 int __declspec(dllexport) GlobalInit2 = 1;
63 
64 // Declare, then export definition.
65 // MSC-DAG: @"?GlobalDeclInit@@3HA" = dso_local dllexport global i32 1, align 4
66 // GNU-DAG: @GlobalDeclInit            = dso_local dllexport global i32 1, align 4
67 __declspec(dllexport) extern int GlobalDeclInit;
68 int GlobalDeclInit = 1;
69 
70 // Redeclarations
71 // MSC-DAG: @"?GlobalRedecl1@@3HA" = dso_local dllexport global i32 0, align 4
72 // GNU-DAG: @GlobalRedecl1            = dso_local dllexport global i32 0, align 4
73 __declspec(dllexport) extern int GlobalRedecl1;
74 __declspec(dllexport)        int GlobalRedecl1;
75 
76 // MSC-DAG: @"?GlobalRedecl2@@3HA" = dso_local dllexport global i32 0, align 4
77 // GNU-DAG: @GlobalRedecl2            = dso_local dllexport global i32 0, align 4
78 __declspec(dllexport) extern int GlobalRedecl2;
79                              int GlobalRedecl2;
80 
81 // MSC-DAG: @"?ExternalGlobal@ns@@3HA" = dso_local dllexport global i32 0, align 4
82 // GNU-DAG: @_ZN2ns14ExternalGlobalE      = dso_local dllexport global i32 0, align 4
83 namespace ns { __declspec(dllexport) int ExternalGlobal; }
84 
85 // MSC-DAG: @"?ExternalAutoTypeGlobal@@3UExternal@@A" = dso_local dllexport global %struct.External zeroinitializer, align 4
86 // GNU-DAG: @ExternalAutoTypeGlobal                      = dso_local dllexport global %struct.External zeroinitializer, align 4
87 __declspec(dllexport) auto ExternalAutoTypeGlobal = External();
88 
89 int f();
90 // MSC-DAG: @"?x@?1??nonInlineStaticLocalsFunc@@YAHXZ@4HA" = internal {{(unnamed_addr )*}}global i32 0
91 // MSC-DAG: @"?$S1@?1??nonInlineStaticLocalsFunc@@YAHXZ@4IA" = internal {{(unnamed_addr )*}}global i32 0
nonInlineStaticLocalsFunc()92 int __declspec(dllexport) nonInlineStaticLocalsFunc() {
93   static int x = f();
94   return x++;
95 };
96 
97 // MSC-DAG: @"?x@?1??inlineStaticLocalsFunc@@YAHXZ@4HA" = weak_odr dso_local dllexport global i32 0, comdat
98 // MSC-DAG: @"??_B?1??inlineStaticLocalsFunc@@YAHXZ@51" = weak_odr dllexport global i32 0, comdat
99 // Note: MinGW doesn't seem to export the static local here.
inlineStaticLocalsFunc()100 inline int __declspec(dllexport) inlineStaticLocalsFunc() {
101   static int x = f();
102   return x++;
103 }
104 
105 namespace PR32992 {
106 // Static data members of a instantiated base class should be exported.
107 template <class T>
108 class Base {
myfunc()109   virtual void myfunc() {}
110   static int smember;
111 };
112 // MSC-DAG: @"?smember@?$Base@H@PR32992@@0HA" = weak_odr dso_local dllexport global i32 77, comdat, align 4
113 template <class T> int Base<T>::smember = 77;
114 template <class T>
115 class __declspec(dllexport) Derived2 : Base<T> {
myfunc()116   void myfunc() {}
117 };
118 class Derived : public Derived2<int> {
myfunc()119   void myfunc() {}
120 };
121 }  // namespace PR32992
122 
123 namespace PR32992_1 {
124 namespace a { enum b { c }; }
125 template <typename> class d {
126    static constexpr a::b e = a::c;
127 };
128 namespace f {
129   template <typename g = int> class h : d<g> {};
130 }
131 using f::h;
132 class __declspec(dllexport) i : h<> {};
133 }
134 
135 //===----------------------------------------------------------------------===//
136 // Variable templates
137 //===----------------------------------------------------------------------===//
138 
139 // Declarations are not exported.
140 
141 // MSC-DAG: @"??$VarTmplImplicitDef@UImplicitInst_Exported@@@@3HA" = external dso_local global
142 // GNU-DAG: @_Z18VarTmplImplicitDefI21ImplicitInst_ExportedE          = external global
143 template<typename T> __declspec(dllexport) extern int VarTmplImplicitDef;
144 USEVAR(VarTmplImplicitDef<ImplicitInst_Exported>)
145 
146 // Export definition.
147 // MSC-DAG: @"??$VarTmplInit1@UExplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
148 // GNU-DAG: @_Z12VarTmplInit1I21ExplicitInst_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
149 template<typename T> __declspec(dllexport) int VarTmplInit1 = 1;
150 INSTVAR(VarTmplInit1<ExplicitInst_Exported>)
151 
152 // MSC-DAG: @"??$VarTmplInit2@UExplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
153 // GNU-DAG: @_Z12VarTmplInit2I21ExplicitInst_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
154 template<typename T> int __declspec(dllexport) VarTmplInit2 = 1;
155 INSTVAR(VarTmplInit2<ExplicitInst_Exported>)
156 
157 // Declare, then export definition.
158 // MSC-DAG: @"??$VarTmplDeclInit@UExplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
159 // GNU-DAG: @_Z15VarTmplDeclInitI21ExplicitInst_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
160 template<typename T> __declspec(dllexport) extern int VarTmplDeclInit;
161 template<typename T>                              int VarTmplDeclInit = 1;
162 INSTVAR(VarTmplDeclInit<ExplicitInst_Exported>)
163 
164 // Redeclarations
165 // MSC-DAG: @"??$VarTmplRedecl1@UExplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
166 // GNU-DAG: @_Z14VarTmplRedecl1I21ExplicitInst_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
167 template<typename T> __declspec(dllexport) extern int VarTmplRedecl1;
168 template<typename T> __declspec(dllexport)        int VarTmplRedecl1 = 1;
169 INSTVAR(VarTmplRedecl1<ExplicitInst_Exported>)
170 
171 // MSC-DAG: @"??$VarTmplRedecl2@UExplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
172 // GNU-DAG: @_Z14VarTmplRedecl2I21ExplicitInst_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
173 template<typename T> __declspec(dllexport) extern int VarTmplRedecl2;
174 template<typename T>                              int VarTmplRedecl2 = 1;
175 INSTVAR(VarTmplRedecl2<ExplicitInst_Exported>)
176 
177 // MSC-DAG: @"??$ExternalVarTmpl@UExplicitInst_Exported@@@ns@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
178 // GNU-DAG: @_ZN2ns15ExternalVarTmplI21ExplicitInst_ExportedEE        = weak_odr dso_local dllexport global i32 1, comdat, align 4
179 namespace ns { template<typename T> __declspec(dllexport) int ExternalVarTmpl = 1; }
180 INSTVAR(ns::ExternalVarTmpl<ExplicitInst_Exported>)
181 
182 // MSC-DAG: @"??$ExternalAutoTypeVarTmpl@UExplicitInst_Exported@@@@3UExternal@@A" = weak_odr dso_local dllexport global %struct.External zeroinitializer, comdat, align 4
183 // GNU-DAG: @_Z23ExternalAutoTypeVarTmplI21ExplicitInst_ExportedE                    = weak_odr dso_local dllexport global %struct.External zeroinitializer, comdat, align 4
184 template<typename T> __declspec(dllexport) auto ExternalAutoTypeVarTmpl = External();
185 template External ExternalAutoTypeVarTmpl<ExplicitInst_Exported>;
186 
187 
188 template<typename T> int VarTmpl = 1;
189 template<typename T> __declspec(dllexport) int ExportedVarTmpl = 1;
190 
191 // Export implicit instantiation of an exported variable template.
192 // MSC-DAG: @"??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
193 // GNU-DAG: @_Z15ExportedVarTmplI21ImplicitInst_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
194 USEVAR(ExportedVarTmpl<ImplicitInst_Exported>)
195 
196 // Export explicit instantiation declaration of an exported variable template.
197 // MSC-DAG: @"??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
198 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitDecl_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
199 extern template int ExportedVarTmpl<ExplicitDecl_Exported>;
200        template int ExportedVarTmpl<ExplicitDecl_Exported>;
201 
202 // Export explicit instantiation definition of an exported variable template.
203 // MSC-DAG: @"??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
204 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitInst_ExportedE          = weak_odr dso_local dllexport global i32 1, comdat, align 4
205 template __declspec(dllexport) int ExportedVarTmpl<ExplicitInst_Exported>;
206 
207 // Export specialization of an exported variable template.
208 // MSC-DAG: @"??$ExportedVarTmpl@UExplicitSpec_Exported@@@@3HA" = dso_local dllexport global i32 0, align 4
209 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitSpec_ExportedE          = dso_local dllexport global i32 0, align 4
210 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Exported>;
211 
212 // MSC-DAG: @"??$ExportedVarTmpl@UExplicitSpec_Def_Exported@@@@3HA" = dso_local dllexport global i32 1, align 4
213 // GNU-DAG: @_Z15ExportedVarTmplI25ExplicitSpec_Def_ExportedE          = dso_local dllexport global i32 1, align 4
214 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Def_Exported> = 1;
215 
216 // Not exporting specialization of an exported variable template without
217 // explicit dllexport.
218 // MSC-DAG: @"??$ExportedVarTmpl@UExplicitSpec_NotExported@@@@3HA" = dso_local global i32 0, align 4
219 // GNU-DAG: @_Z15ExportedVarTmplI24ExplicitSpec_NotExportedE          = dso_local global i32 0, align 4
220 template<> int ExportedVarTmpl<ExplicitSpec_NotExported>;
221 
222 
223 // Export explicit instantiation declaration of a non-exported variable template.
224 // MSC-DAG: @"??$VarTmpl@UExplicitDecl_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
225 // GNU-DAG: @_Z7VarTmplI21ExplicitDecl_ExportedE           = weak_odr dso_local dllexport global i32 1, comdat, align 4
226 extern template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
227        template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
228 
229 // Export explicit instantiation definition of a non-exported variable template.
230 // MSC-DAG: @"??$VarTmpl@UExplicitInst_Exported@@@@3HA" = weak_odr dso_local dllexport global i32 1, comdat, align 4
231 // GNU-DAG: @_Z7VarTmplI21ExplicitInst_ExportedE           = weak_odr dso_local dllexport global i32 1, comdat, align 4
232 template __declspec(dllexport) int VarTmpl<ExplicitInst_Exported>;
233 
234 // Export specialization of a non-exported variable template.
235 // MSC-DAG: @"??$VarTmpl@UExplicitSpec_Exported@@@@3HA" = dso_local dllexport global i32 0, align 4
236 // GNU-DAG: @_Z7VarTmplI21ExplicitSpec_ExportedE           = dso_local dllexport global i32 0, align 4
237 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Exported>;
238 
239 // MSC-DAG: @"??$VarTmpl@UExplicitSpec_Def_Exported@@@@3HA" = dso_local dllexport global i32 1, align 4
240 // GNU-DAG: @_Z7VarTmplI25ExplicitSpec_Def_ExportedE           = dso_local dllexport global i32 1, align 4
241 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Def_Exported> = 1;
242 
243 
244 
245 //===----------------------------------------------------------------------===//
246 // Functions
247 //===----------------------------------------------------------------------===//
248 
249 // Declarations are not exported.
250 
251 // Export function definition.
252 // MSC-DAG: define dso_local dllexport void @"?def@@YAXXZ"()
253 // GNU-DAG: define dso_local dllexport void @_Z3defv()
def()254 __declspec(dllexport) void def() {}
255 
256 // extern "C"
257 // MSC-DAG: define dso_local dllexport void @externC()
258 // GNU-DAG: define dso_local dllexport void @externC()
externC()259 extern "C" __declspec(dllexport) void externC() {}
260 
261 // Export inline function.
262 // MSC-DAG: define weak_odr dso_local dllexport void @"?inlineFunc@@YAXXZ"()
263 // GNU-DAG: define weak_odr dso_local dllexport void @_Z10inlineFuncv()
inlineFunc()264 __declspec(dllexport) inline void inlineFunc() {}
265 
266 // MSC-DAG: define weak_odr dso_local dllexport void @"?inlineDecl@@YAXXZ"()
267 // GNU-DAG: define weak_odr dso_local dllexport void @_Z10inlineDeclv()
268 __declspec(dllexport) inline void inlineDecl();
inlineDecl()269                              void inlineDecl() {}
270 
271 // MSC-DAG: define weak_odr dso_local dllexport void @"?inlineDef@@YAXXZ"()
272 // GNU-DAG: define weak_odr dso_local dllexport void @_Z9inlineDefv()
273 __declspec(dllexport) void inlineDef();
inlineDef()274                inline void inlineDef() {}
275 
276 // Redeclarations
277 // MSC-DAG: define dso_local dllexport void @"?redecl1@@YAXXZ"()
278 // GNU-DAG: define dso_local dllexport void @_Z7redecl1v()
279 __declspec(dllexport) void redecl1();
redecl1()280 __declspec(dllexport) void redecl1() {}
281 
282 // MSC-DAG: define dso_local dllexport void @"?redecl2@@YAXXZ"()
283 // GNU-DAG: define dso_local dllexport void @_Z7redecl2v()
284 __declspec(dllexport) void redecl2();
redecl2()285                       void redecl2() {}
286 
287 // Friend functions
288 // MSC-DAG: define dso_local dllexport void @"?friend1@@YAXXZ"()
289 // GNU-DAG: define dso_local dllexport void @_Z7friend1v()
290 // MSC-DAG: define dso_local dllexport void @"?friend2@@YAXXZ"()
291 // GNU-DAG: define dso_local dllexport void @_Z7friend2v()
292 struct FuncFriend {
293   friend __declspec(dllexport) void friend1();
294   friend __declspec(dllexport) void friend2();
295 };
friend1()296 __declspec(dllexport) void friend1() {}
friend2()297                       void friend2() {}
298 
299 // MSC-DAG: define dso_local dllexport void @"?func@Befriended@@SAXXZ"()
300 // GNU-DAG: define dso_local dllexport void @_ZN10Befriended4funcEv()
301 struct __declspec(dllexport) Befriended {
302   static void func();
303   struct Befriending {
304     friend void Befriended::func();
305   };
306 };
func()307 void Befriended::func() {}
308 
309 // Implicit declarations can be redeclared with dllexport.
310 // MSC-DAG: define dso_local dllexport nonnull ptr @"??2@{{YAPAXI|YAPEAX_K}}@Z"(
311 // GNU-DAG: define dso_local dllexport nonnull ptr @_Znw{{[yj]}}(
312 void* alloc(__SIZE_TYPE__ n);
operator new(__SIZE_TYPE__ n)313 __declspec(dllexport) void* operator new(__SIZE_TYPE__ n) { return alloc(n); }
314 
315 // MSC-DAG: define dso_local dllexport void @"?externalFunc@ns@@YAXXZ"()
316 // GNU-DAG: define dso_local dllexport void @_ZN2ns12externalFuncEv()
externalFunc()317 namespace ns { __declspec(dllexport) void externalFunc() {} }
318 
319 
320 
321 //===----------------------------------------------------------------------===//
322 // Function templates
323 //===----------------------------------------------------------------------===//
324 
325 // Export function template definition.
326 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmplDef@UExplicitInst_Exported@@@@YAXXZ"()
327 // GNU-DAG: define weak_odr dso_local dllexport void @_Z11funcTmplDefI21ExplicitInst_ExportedEvv()
funcTmplDef()328 template<typename T> __declspec(dllexport) void funcTmplDef() {}
INST(funcTmplDef<ExplicitInst_Exported>)329 INST(funcTmplDef<ExplicitInst_Exported>)
330 
331 // Export inline function template.
332 // MSC-DAG: define weak_odr dso_local dllexport void @"??$inlineFuncTmpl1@UExplicitInst_Exported@@@@YAXXZ"()
333 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15inlineFuncTmpl1I21ExplicitInst_ExportedEvv()
334 template<typename T> __declspec(dllexport) inline void inlineFuncTmpl1() {}
INST(inlineFuncTmpl1<ExplicitInst_Exported>)335 INST(inlineFuncTmpl1<ExplicitInst_Exported>)
336 
337 // MSC-DAG: define weak_odr dso_local dllexport void @"??$inlineFuncTmpl2@UExplicitInst_Exported@@@@YAXXZ"()
338 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15inlineFuncTmpl2I21ExplicitInst_ExportedEvv()
339 template<typename T> inline void __attribute__((dllexport)) inlineFuncTmpl2() {}
340 INST(inlineFuncTmpl2<ExplicitInst_Exported>)
341 
342 // MSC-DAG: define weak_odr dso_local dllexport void @"??$inlineFuncTmplDecl@UExplicitInst_Exported@@@@YAXXZ"()
343 // GNU-DAG: define weak_odr dso_local dllexport void @_Z18inlineFuncTmplDeclI21ExplicitInst_ExportedEvv()
344 template<typename T> __declspec(dllexport) inline void inlineFuncTmplDecl();
inlineFuncTmplDecl()345 template<typename T>                              void inlineFuncTmplDecl() {}
346 INST(inlineFuncTmplDecl<ExplicitInst_Exported>)
347 
348 // MSC-DAG: define weak_odr dso_local dllexport void @"??$inlineFuncTmplDef@UExplicitInst_Exported@@@@YAXXZ"()
349 // GNU-DAG: define weak_odr dso_local dllexport void @_Z17inlineFuncTmplDefI21ExplicitInst_ExportedEvv()
350 template<typename T> __declspec(dllexport) void inlineFuncTmplDef();
inlineFuncTmplDef()351 template<typename T>                inline void inlineFuncTmplDef() {}
352 INST(inlineFuncTmplDef<ExplicitInst_Exported>)
353 
354 
355 // Redeclarations
356 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmplRedecl1@UExplicitInst_Exported@@@@YAXXZ"()
357 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15funcTmplRedecl1I21ExplicitInst_ExportedEvv()
358 template<typename T> __declspec(dllexport) void funcTmplRedecl1();
funcTmplRedecl1()359 template<typename T> __declspec(dllexport) void funcTmplRedecl1() {}
360 INST(funcTmplRedecl1<ExplicitInst_Exported>)
361 
362 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmplRedecl2@UExplicitInst_Exported@@@@YAXXZ"()
363 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15funcTmplRedecl2I21ExplicitInst_ExportedEvv()
364 template<typename T> __declspec(dllexport) void funcTmplRedecl2();
funcTmplRedecl2()365 template<typename T>                       void funcTmplRedecl2() {}
366 INST(funcTmplRedecl2<ExplicitInst_Exported>)
367 
368 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmplRedecl3@UExplicitInst_Exported@@@@YAXXZ"()
369 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15funcTmplRedecl3I21ExplicitInst_ExportedEvv()
370 template<typename T> __declspec(dllexport) void funcTmplRedecl3();
funcTmplRedecl3()371 template<typename T>                       void funcTmplRedecl3() {}
372 INST(funcTmplRedecl3<ExplicitInst_Exported>)
373 
374 
375 // Function template friends
376 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmplFriend1@UExplicitInst_Exported@@@@YAXXZ"()
377 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15funcTmplFriend1I21ExplicitInst_ExportedEvv()
378 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmplFriend2@UExplicitInst_Exported@@@@YAXXZ"()
379 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15funcTmplFriend2I21ExplicitInst_ExportedEvv()
380 struct FuncTmplFriend {
381   template<typename T> friend __declspec(dllexport) void funcTmplFriend1();
382   template<typename T> friend __declspec(dllexport) void funcTmplFriend2();
383 };
funcTmplFriend1()384 template<typename T> __declspec(dllexport) void funcTmplFriend1() {}
funcTmplFriend2()385 template<typename T>                       void funcTmplFriend2() {}
386 INST(funcTmplFriend1<ExplicitInst_Exported>)
387 INST(funcTmplFriend2<ExplicitInst_Exported>)
388 
389 // MSC-DAG: define weak_odr dso_local dllexport void @"??$externalFuncTmpl@UExplicitInst_Exported@@@ns@@YAXXZ"()
390 // GNU-DAG: define weak_odr dso_local dllexport void @_ZN2ns16externalFuncTmplI21ExplicitInst_ExportedEEvv()
externalFuncTmpl()391 namespace ns { template<typename T> __declspec(dllexport) void externalFuncTmpl() {} }
INST(ns::externalFuncTmpl<ExplicitInst_Exported>)392 INST(ns::externalFuncTmpl<ExplicitInst_Exported>)
393 
394 
395 template<typename T> void funcTmpl() {}
exportedFuncTmpl()396 template<typename T> __declspec(dllexport) void exportedFuncTmpl() {}
397 
398 // Export implicit instantiation of an exported function template.
399 // MSC-DAG: define weak_odr dso_local dllexport void @"??$exportedFuncTmpl@UImplicitInst_Exported@@@@YAXXZ"()
400 // GNU-DAG: define weak_odr dso_local dllexport void @_Z16exportedFuncTmplI21ImplicitInst_ExportedEvv()
401 USE(exportedFuncTmpl<ImplicitInst_Exported>)
402 
403 // Export explicit instantiation declaration of an exported function template.
404 // MSC-DAG: define weak_odr dso_local dllexport void @"??$exportedFuncTmpl@UExplicitDecl_Exported@@@@YAXXZ"()
405 // GNU-DAG: define weak_odr dso_local dllexport void @_Z16exportedFuncTmplI21ExplicitDecl_ExportedEvv()
406 extern template void exportedFuncTmpl<ExplicitDecl_Exported>();
407        template void exportedFuncTmpl<ExplicitDecl_Exported>();
408 
409 // Export explicit instantiation definition of an exported function template.
410 // MSC-DAG: define weak_odr dso_local dllexport void @"??$exportedFuncTmpl@UExplicitInst_Exported@@@@YAXXZ"()
411 // GNU-DAG: define weak_odr dso_local dllexport void @_Z16exportedFuncTmplI21ExplicitInst_ExportedEvv()
412 template void exportedFuncTmpl<ExplicitInst_Exported>();
413 
414 // Export specialization of an exported function template.
415 // MSC-DAG: define dso_local dllexport void @"??$exportedFuncTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"()
416 // GNU-DAG: define dso_local dllexport void @_Z16exportedFuncTmplI25ExplicitSpec_Def_ExportedEvv()
exportedFuncTmpl()417 template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Def_Exported>() {}
418 
419 // MSC-DAG: define weak_odr dso_local dllexport void @"??$exportedFuncTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"()
420 // GNU-DAG: define weak_odr dso_local dllexport void @_Z16exportedFuncTmplI31ExplicitSpec_InlineDef_ExportedEvv()
exportedFuncTmpl()421 template<> __declspec(dllexport) inline void exportedFuncTmpl<ExplicitSpec_InlineDef_Exported>() {}
422 
423 // Not exporting specialization of an exported function template without
424 // explicit dllexport.
425 // MSC-DAG: define dso_local void @"??$exportedFuncTmpl@UExplicitSpec_NotExported@@@@YAXXZ"()
426 // GNU-DAG: define dso_local void @_Z16exportedFuncTmplI24ExplicitSpec_NotExportedEvv()
exportedFuncTmpl()427 template<> void exportedFuncTmpl<ExplicitSpec_NotExported>() {}
428 
429 
430 // Export explicit instantiation declaration of a non-exported function template.
431 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmpl@UExplicitDecl_Exported@@@@YAXXZ"()
432 // GNU-DAG: define weak_odr dso_local dllexport void @_Z8funcTmplI21ExplicitDecl_ExportedEvv()
433 extern template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
434        template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
435 
436 // Export explicit instantiation definition of a non-exported function template.
437 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmpl@UExplicitInst_Exported@@@@YAXXZ"()
438 // GNU-DAG: define weak_odr dso_local dllexport void @_Z8funcTmplI21ExplicitInst_ExportedEvv()
439 template __declspec(dllexport) void funcTmpl<ExplicitInst_Exported>();
440 
441 // Export specialization of a non-exported function template.
442 // MSC-DAG: define dso_local dllexport void @"??$funcTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"()
443 // GNU-DAG: define dso_local dllexport void @_Z8funcTmplI25ExplicitSpec_Def_ExportedEvv()
funcTmpl()444 template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Def_Exported>() {}
445 
446 // MSC-DAG: define weak_odr dso_local dllexport void @"??$funcTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"()
447 // GNU-DAG: define weak_odr dso_local dllexport void @_Z8funcTmplI31ExplicitSpec_InlineDef_ExportedEvv()
funcTmpl()448 template<> __declspec(dllexport) inline void funcTmpl<ExplicitSpec_InlineDef_Exported>() {}
449 
450 
451 
452 //===----------------------------------------------------------------------===//
453 // Precedence
454 //===----------------------------------------------------------------------===//
455 
456 // dllexport takes precedence over the dllimport if both are specified.
457 // MSC-DAG: @"?PrecedenceGlobal1A@@3HA" = dso_local dllexport global i32 0, align 4
458 // MSC-DAG: @"?PrecedenceGlobal1B@@3HA" = dso_local dllexport global i32 0, align 4
459 // GNU-DAG: @PrecedenceGlobal1A            = dso_local dllexport global i32 0, align 4
460 // GNU-DAG: @PrecedenceGlobal1B            = dso_local dllexport global i32 0, align 4
461 __attribute__((dllimport, dllexport))       int PrecedenceGlobal1A; // dllimport ignored
462 __declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B; // dllimport ignored
463 
464 // MSC-DAG: @"?PrecedenceGlobal2A@@3HA" = dso_local dllexport global i32 0, align 4
465 // MSC-DAG: @"?PrecedenceGlobal2B@@3HA" = dso_local dllexport global i32 0, align 4
466 // GNU-DAG: @PrecedenceGlobal2A            = dso_local dllexport global i32 0, align 4
467 // GNU-DAG: @PrecedenceGlobal2B            = dso_local dllexport global i32 0, align 4
468 __attribute__((dllexport, dllimport))       int PrecedenceGlobal2A; // dllimport ignored
469 __declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B; // dllimport ignored
470 
471 // MSC-DAG: @"?PrecedenceGlobalRedecl1@@3HA" = dso_local dllexport global i32 0, align 4
472 // GNU-DAG: @PrecedenceGlobalRedecl1            = dso_local dllexport global i32 0, align 4
473 __declspec(dllexport) extern int PrecedenceGlobalRedecl1;
474 __declspec(dllimport)        int PrecedenceGlobalRedecl1 = 0;
475 
476 // MSC-DAG: @"?PrecedenceGlobalRedecl2@@3HA" = dso_local dllexport global i32 0, align 4
477 // GNU-DAG: @PrecedenceGlobalRedecl2            = dso_local dllexport global i32 0, align 4
478 __declspec(dllimport) extern int PrecedenceGlobalRedecl2;
479 __declspec(dllexport)        int PrecedenceGlobalRedecl2;
480 
481 // MSC-DAG: @"?PrecedenceGlobalMixed1@@3HA" = dso_local dllexport global i32 0, align 4
482 // GNU-DAG: @PrecedenceGlobalMixed1            = dso_local dllexport global i32 0, align 4
483 __attribute__((dllexport)) extern int PrecedenceGlobalMixed1;
484 __declspec(dllimport)             int PrecedenceGlobalMixed1 = 0;
485 
486 // MSC-DAG: @"?PrecedenceGlobalMixed2@@3HA" = dso_local dllexport global i32 0, align 4
487 // GNU-DAG: @PrecedenceGlobalMixed2            = dso_local dllexport global i32 0, align 4
488 __attribute__((dllimport)) extern int PrecedenceGlobalMixed2;
489 __declspec(dllexport)             int PrecedenceGlobalMixed2;
490 
491 // MSC-DAG: define dso_local dllexport void @"?precedence1A@@YAXXZ"
492 // MSC-DAG: define dso_local dllexport void @"?precedence1B@@YAXXZ"
493 // GNU-DAG: define dso_local dllexport void @_Z12precedence1Av()
494 // GNU-DAG: define dso_local dllexport void @_Z12precedence1Bv()
precedence1A()495 void __attribute__((dllimport, dllexport))       precedence1A() {}
precedence1B()496 void __declspec(dllimport) __declspec(dllexport) precedence1B() {}
497 
498 // MSC-DAG: define dso_local dllexport void @"?precedence2A@@YAXXZ"
499 // MSC-DAG: define dso_local dllexport void @"?precedence2B@@YAXXZ"
500 // GNU-DAG: define dso_local dllexport void @_Z12precedence2Av()
501 // GNU-DAG: define dso_local dllexport void @_Z12precedence2Bv()
precedence2A()502 void __attribute__((dllexport, dllimport))       precedence2A() {}
precedence2B()503 void __declspec(dllexport) __declspec(dllimport) precedence2B() {}
504 
505 // MSC-DAG: define dso_local dllexport void @"?precedenceRedecl1@@YAXXZ"
506 // GNU-DAG: define dso_local dllexport void @_Z17precedenceRedecl1v()
507 void __declspec(dllimport) precedenceRedecl1();
precedenceRedecl1()508 void __declspec(dllexport) precedenceRedecl1() {}
509 
510 // MSC-DAG: define dso_local dllexport void @"?precedenceRedecl2@@YAXXZ"
511 // GNU-DAG: define dso_local dllexport void @_Z17precedenceRedecl2v()
512 void __declspec(dllexport) precedenceRedecl2();
precedenceRedecl2()513 void __declspec(dllimport) precedenceRedecl2() {}
514 
515 
516 
517 //===----------------------------------------------------------------------===//
518 // Classes
519 //===----------------------------------------------------------------------===//
520 
521 struct S {
aS522   void __declspec(dllexport) a() {}
523   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?a@S@@QAEXXZ"
524 
525   struct T {
aS::T526     void __declspec(dllexport) a() {}
527     // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?a@T@S@@QAEXXZ"
528   };
529 };
530 
531 template <typename T>
532 struct SomeTemplate {
SomeTemplateSomeTemplate533   SomeTemplate(T o = T()) : o(o) {}
534   T o;
535 };
536 // MSVC2015-DAG: define weak_odr dso_local dllexport {{.+}} @"??4?$SomeTemplate@H@@Q{{.+}}@$$Q{{.+}}@@Z"
537 // MSVC2013-DAG: define weak_odr dso_local dllexport {{.+}} @"??4?$SomeTemplate@H@@Q{{.+}}0@A{{.+}}0@@Z"
538 struct __declspec(dllexport) InheritFromTemplate : SomeTemplate<int> {};
539 
540 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"??_F?$SomeTemplate@H@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
541 
542 namespace PR23801 {
543 template <typename>
544 struct S {
~SPR23801::S545   ~S() {}
546 };
547 struct A {
548   A(int);
549   S<int> s;
550 };
551 struct __declspec(dllexport) B {
BPR23801::B552   B(A = 0) {}
553 };
554 
555 }
556 //
557 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FB@PR23801@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
558 
559 struct __declspec(dllexport) T {
560   // Copy assignment operator:
561   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @"??4T@@QAEAAU0@ABU0@@Z"
562 
563   // Explicitly defaulted copy constructur:
564   T(const T&) = default;
565   // M32MSVC2013-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0T@@QAE@ABU0@@Z"
566 
aT567   void a() {}
568   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?a@T@@QAEXXZ"
569 
570   static int b;
571   // M32-DAG: @"?b@T@@2HA" = external dso_local global i32
572 
573   static int c;
574   // M32-DAG: @"?c@T@@2HA" = dso_local dllexport global i32 0, align 4
575 };
576 
577 USEVAR(T::b)
578 int T::c;
579 
580 // Export template class with static member variable
581 // MSC-DAG: @"?StaticClassVarExpTmplClass@?$TmplClass@H@@2HA" = weak_odr dso_local dllexport global i32 0, comdat, align 4
582 // GNU-DAG: @_ZN9TmplClassIiE26StaticClassVarExpTmplClassE = weak_odr dso_local dllexport global i32 0, comdat, align 4
583 template<typename T>
584 struct __declspec(dllexport) TmplClass
585 {
586   static T StaticClassVarExpTmplClass;
587 };
588 
589 template<typename T>
590 T TmplClass<T>::StaticClassVarExpTmplClass;
591 
592 // Export a definition of a template function.
593 // MSC-DAG: define weak_odr dso_local dllexport i32 @"??$TypeFunTmpl@H@@YAHH@Z"
594 // GNU-DAG: define weak_odr dso_local dllexport i32 @_Z11TypeFunTmplIiET_S0_
595 template<typename T>
TypeFunTmpl(T t)596 T __declspec(dllexport) TypeFunTmpl(T t) { return t + t; }
597 
598 // Instantiate the exported template class and the exported template function.
useExportedTmplStaticAndFun()599 int useExportedTmplStaticAndFun()
600 {
601   return TmplClass<int>::StaticClassVarExpTmplClass + TypeFunTmpl<int>(10);
602 }
603 
fooU604 template <typename T> struct __declspec(dllexport) U { void foo() {} };
605 struct __declspec(dllexport) V : public U<int> { };
606 // U<int>'s assignment operator is emitted.
607 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @"??4?$U@H@@QAEAAU0@ABU0@@Z"
608 
609 struct __declspec(dllexport) W { virtual void foo(); };
foo()610 void W::foo() {}
611 // Default ctor:
612 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0W@@QAE@XZ"
613 // Copy ctor:
614 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0W@@QAE@ABU0@@Z"
615 // vftable:
616 // M32-DAG: [[W_VTABLE:@.*]] = private unnamed_addr constant { [2 x ptr] } { [2 x ptr] [ptr @"??_R4W@@6B@", ptr @"?foo@W@@UAEXXZ"] }, comdat($"??_7W@@6B@")
617 // M32-DAG: @"??_7W@@6B@" = dllexport unnamed_addr alias ptr, getelementptr inbounds ({ [2 x ptr] }, ptr [[W_VTABLE]], i32 0, i32 0, i32 1)
618 // G32-DAG: @_ZTV1W = dso_local dllexport unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI1W, ptr @_ZN1W3fooEv] }
619 
620 struct __declspec(dllexport) X : public virtual W {};
621 // vbtable:
622 // M32-DAG: @"??_8X@@7B@" = weak_odr dllexport unnamed_addr constant [2 x i32] [i32 0, i32 4]
623 
624 struct __declspec(dllexport) Y {
625   // Move assignment operator:
626   // MSVC2015-DAG: define weak_odr dso_local dllexport {{.+}} @"??4Y@@Q{{.+}}@$$Q{{.+}}@@Z"
627   // MSVC2013-DAG: define weak_odr dso_local dllexport {{.+}} @"??4Y@@Q{{.+}}0@A{{.+}}0@@Z"
628 
629   int x;
630 };
631 
~ZZ632 struct __declspec(dllexport) Z { virtual ~Z() {} };
633 // The scalar deleting dtor does not get exported:
634 // M32-DAG: define linkonce_odr dso_local x86_thiscallcc ptr @"??_GZ@@UAEPAXI@Z"
635 
636 
637 // The user-defined dtor does get exported:
638 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"??1Z@@UAE@XZ"
639 
640 namespace UseDtorAlias {
641   struct __declspec(dllexport) A { ~A(); };
642   struct __declspec(dllexport) B : A { ~B(); };
~A()643   A::~A() { }
~B()644   B::~B() { }
645   // Emit a alias definition of B's constructor.
646   // M32-DAG: @"??1B@UseDtorAlias@@QAE@XZ" = dso_local dllexport unnamed_addr alias {{.*}} @"??1A@UseDtorAlias@@QAE@XZ"
647 }
648 
649 struct __declspec(dllexport) DefaultedCtorsDtors {
650   DefaultedCtorsDtors() = default;
651   // M32MSVC2013-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0DefaultedCtorsDtors@@QAE@XZ"
652   ~DefaultedCtorsDtors() = default;
653   // M32MSVC2013-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"??1DefaultedCtorsDtors@@QAE@XZ"
654 };
655 
656 // Export defaulted member function definitions declared inside class.
657 struct __declspec(dllexport) ExportDefaultedInclassDefs {
658   ExportDefaultedInclassDefs() = default;
659   // M32VS2013-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0ExportDefaultedInclassDefs@@QAE@XZ"(ptr returned %this)
660   // M64VS2013-DAG: define weak_odr dso_local dllexport                ptr @"??0ExportDefaultedInclassDefs@@QEAA@XZ"(ptr returned %this)
661   // M32VS2015-NOT: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0ExportDefaultedInclassDefs@@QAE@XZ"(ptr returned %this)
662   // M64VS2015-NOT: define weak_odr dso_local dllexport                ptr @"??0ExportDefaultedInclassDefs@@QEAA@XZ"(ptr returned %this)
663 
664   ~ExportDefaultedInclassDefs() = default;
665   // M32VS2013-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"??1ExportDefaultedInclassDefs@@QAE@XZ"(ptr %this)
666   // M64VS2013-DAG: define weak_odr dso_local dllexport                void @"??1ExportDefaultedInclassDefs@@QEAA@XZ"(ptr %this)
667   // M32VS2015-NOT: define weak_odr dso_local dllexport x86_thiscallcc void @"??1ExportDefaultedInclassDefs@@QAE@XZ"(ptr %this)
668   // M64VS2015-NOT: define weak_odr dso_local dllexport                void @"??1ExportDefaultedInclassDefs@@QEAA@XZ"(ptr %this)
669 
670   ExportDefaultedInclassDefs(const ExportDefaultedInclassDefs&) = default;
671   // M32VS2013-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0ExportDefaultedInclassDefs@@QAE@ABU0@@Z"(ptr {{[^,]*}} returned {{[^,]*}} %this, ptr nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}))
672   // M64VS2013-DAG: define weak_odr dso_local dllexport                ptr @"??0ExportDefaultedInclassDefs@@QEAA@AEBU0@@Z"(ptr {{[^,]*}} returned {{[^,]*}} %this, ptr nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}))
673   // M32VS2015-NOT: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0ExportDefaultedInclassDefs@@QAE@ABU0@@Z"(ptr {{[^,]*}} returned {{[^,]*}} %this, ptr nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}))
674   // M64VS2015-NOT: define weak_odr dso_local dllexport                ptr @"??0ExportDefaultedInclassDefs@@QEAA@AEBU0@@Z"(ptr {{[^,]*}} returned {{[^,]*}} %this, ptr nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}))
675 
676   ExportDefaultedInclassDefs& operator=(const ExportDefaultedInclassDefs&) = default;
677   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @"??4ExportDefaultedInclassDefs@@QAEAAU0@ABU0@@Z"(ptr {{[^,]*}} %this, ptr nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %0)
678   // M64-DAG: define weak_odr dso_local dllexport                nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @"??4ExportDefaultedInclassDefs@@QEAAAEAU0@AEBU0@@Z"(ptr {{[^,]*}} %this, ptr nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %0)
679 };
680 
681 namespace ReferencedInlineMethodInNestedClass {
682   struct __declspec(dllexport) S {
fooReferencedInlineMethodInNestedClass::S683     void foo() {
684       t->bar();
685     }
686     struct T {
barReferencedInlineMethodInNestedClass::S::T687       void bar() {}
688     };
689     T *t;
690   };
691   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?foo@S@ReferencedInlineMethodInNestedClass@@QAEXXZ"
692   // M32-DAG: define linkonce_odr dso_local x86_thiscallcc void @"?bar@T@S@ReferencedInlineMethodInNestedClass@@QAEXXZ"
693 }
694 
695 // MS ignores DLL attributes on partial specializations.
696 template <typename T> struct PartiallySpecializedClassTemplate {};
697 template <typename T> struct __declspec(dllexport) PartiallySpecializedClassTemplate<T*> { void f(); };
f()698 template <typename T> void PartiallySpecializedClassTemplate<T*>::f() {}
699 USEMEMFUNC(PartiallySpecializedClassTemplate<void*>, f);
700 // M32-DAG: define linkonce_odr dso_local x86_thiscallcc void @"?f@?$PartiallySpecializedClassTemplate@PAX@@QAEXXZ"
701 // G32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @_ZN33PartiallySpecializedClassTemplateIPvE1fEv
702 
703 // Attributes on explicit specializations are honored.
704 template <typename T> struct ExplicitlySpecializedClassTemplate {};
705 template <> struct __declspec(dllexport) ExplicitlySpecializedClassTemplate<void*> { void f(); };
f()706 void ExplicitlySpecializedClassTemplate<void*>::f() {}
707 USEMEMFUNC(ExplicitlySpecializedClassTemplate<void*>, f);
708 // M32-DAG: define dso_local dllexport x86_thiscallcc void @"?f@?$ExplicitlySpecializedClassTemplate@PAX@@QAEXXZ"
709 // G32-DAG: define dso_local dllexport x86_thiscallcc void @_ZN34ExplicitlySpecializedClassTemplateIPvE1fEv
710 
711 // MS inherits DLL attributes to partial specializations.
712 template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate {};
fPartiallySpecializedExportedClassTemplate713 template <typename T> struct PartiallySpecializedExportedClassTemplate<T*> { void f() {} };
714 USEMEMFUNC(PartiallySpecializedExportedClassTemplate<void*>, f);
715 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$PartiallySpecializedExportedClassTemplate@PAX@@QAEXXZ"
716 // G32-DAG: define linkonce_odr dso_local x86_thiscallcc void @_ZN41PartiallySpecializedExportedClassTemplateIPvE1fEv
717 
718 // MS ignores DLL attributes on partial specializations; inheritance still works though.
719 template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate2 {};
720 template <typename T> struct __declspec(dllimport) PartiallySpecializedExportedClassTemplate2<T*> { void f(); };
f()721 template <typename T> void PartiallySpecializedExportedClassTemplate2<T*>::f() {}
722 USEMEMFUNC(PartiallySpecializedExportedClassTemplate2<void*>, f);
723 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$PartiallySpecializedExportedClassTemplate2@PAX@@QAEXXZ"
724 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN42PartiallySpecializedExportedClassTemplate2IPvE1fEv
725 
726 // Attributes on the instantiation take precedence over attributes on the template.
fExplicitlyInstantiatedWithDifferentAttr727 template <typename T> struct __declspec(dllimport) ExplicitlyInstantiatedWithDifferentAttr { void f() {} };
728 template struct __declspec(dllexport) ExplicitlyInstantiatedWithDifferentAttr<int>;
729 USEMEMFUNC(ExplicitlyInstantiatedWithDifferentAttr<int>, f);
730 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$ExplicitlyInstantiatedWithDifferentAttr@H@@QAEXXZ"
731 
732 // Don't create weak dllexport aliases. (PR21373)
733 struct NonExportedBaseClass {
734   virtual ~NonExportedBaseClass();
735 };
~NonExportedBaseClass()736 NonExportedBaseClass::~NonExportedBaseClass() {}
737 
738 struct __declspec(dllexport) ExportedDerivedClass : NonExportedBaseClass {};
739 // M32-DAG: weak_odr dso_local dllexport x86_thiscallcc void @"??1ExportedDerivedClass@@UAE@XZ"
740 
741 // Do not assert about generating code for constexpr functions twice during explicit instantiation (PR21718).
742 template <typename T> struct ExplicitInstConstexprMembers {
743   // Copy assignment operator
744   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc nonnull align 1 dereferenceable(1) ptr @"??4?$ExplicitInstConstexprMembers@X@@QAEAAU0@ABU0@@Z"
745 
ExplicitInstConstexprMembersExplicitInstConstexprMembers746   constexpr ExplicitInstConstexprMembers() {}
747   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$ExplicitInstConstexprMembers@X@@QAE@XZ"
748 
749   ExplicitInstConstexprMembers(const ExplicitInstConstexprMembers&) = default;
750   // M32MSVC2013-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$ExplicitInstConstexprMembers@X@@QAE@ABU0@@Z"
751 
fExplicitInstConstexprMembers752   constexpr int f() const { return 42; }
753   // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc i32 @"?f@?$ExplicitInstConstexprMembers@X@@QBEHXZ"
754 };
755 template struct __declspec(dllexport) ExplicitInstConstexprMembers<void>;
756 
fExplicitInstantiationDeclTemplate757 template <typename T> struct ExplicitInstantiationDeclTemplate { void f() {} };
758 extern template struct __declspec(dllexport) ExplicitInstantiationDeclTemplate<int>;
759 USEMEMFUNC(ExplicitInstantiationDeclTemplate<int>, f);
760 // M32-DAG: {{declare|define available_externally}} dso_local x86_thiscallcc void @"?f@?$ExplicitInstantiationDeclTemplate@H@@QAEXXZ"
761 
fExplicitInstantiationDeclExportedTemplate762 template <typename T> struct __declspec(dllexport) ExplicitInstantiationDeclExportedTemplate { void f() {} };
763 extern template struct ExplicitInstantiationDeclExportedTemplate<int>;
764 USEMEMFUNC(ExplicitInstantiationDeclExportedTemplate<int>, f);
765 // M32-DAG: {{declare|define available_externally}} dso_local x86_thiscallcc void @"?f@?$ExplicitInstantiationDeclExportedTemplate@H@@QAEXXZ"
766 
ExplicitInstantiationDeclExportedDefTemplateExplicitInstantiationDeclExportedDefTemplate767 template <typename T> struct ExplicitInstantiationDeclExportedDefTemplate { void f() {} ExplicitInstantiationDeclExportedDefTemplate() {} };
768 extern template struct ExplicitInstantiationDeclExportedDefTemplate<int>;
769 template struct __declspec(dllexport) ExplicitInstantiationDeclExportedDefTemplate<int>;
770 USEMEMFUNC(ExplicitInstantiationDeclExportedDefTemplate<int>, f);
771 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$ExplicitInstantiationDeclExportedDefTemplate@H@@QAEXXZ"
772 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$ExplicitInstantiationDeclExportedDefTemplate@H@@QAE@XZ"
773 // G32-DAG: define weak_odr dso_local x86_thiscallcc void @_ZN44ExplicitInstantiationDeclExportedDefTemplateIiE1fEv
774 
fImplicitInstantiationExportedExplicitInstantiationDefTemplate775 template <typename T> struct ImplicitInstantiationExportedExplicitInstantiationDefTemplate { virtual void f() {} };
776 ImplicitInstantiationExportedExplicitInstantiationDefTemplate<int> ImplicitInstantiationExportedExplicitInstantiationDefTemplateInstance;
777 template struct __declspec(dllexport) ImplicitInstantiationExportedExplicitInstantiationDefTemplate<int>;
778 USEMEMFUNC(ImplicitInstantiationExportedExplicitInstantiationDefTemplate<int>, f);
779 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$ImplicitInstantiationExportedExplicitInstantiationDefTemplate@H@@UAEXXZ"
780 // G32-DAG: define weak_odr dso_local x86_thiscallcc void @_ZN61ImplicitInstantiationExportedExplicitInstantiationDefTemplateIiE1fEv
781 
fImplicitInstantiationExplicitInstantiationDefExportedTemplate782 template <typename T> struct __declspec(dllexport) ImplicitInstantiationExplicitInstantiationDefExportedTemplate { virtual void f() {} };
783 ImplicitInstantiationExplicitInstantiationDefExportedTemplate<int> ImplicitInstantiationExplicitInstantiationDefExportedTemplateInstance;
784 template struct ImplicitInstantiationExplicitInstantiationDefExportedTemplate<int>;
785 USEMEMFUNC(ImplicitInstantiationExplicitInstantiationDefExportedTemplate<int>, f);
786 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$ImplicitInstantiationExplicitInstantiationDefExportedTemplate@H@@UAEXXZ"
787 // G32-DAG: define weak_odr dso_local x86_thiscallcc void @_ZN61ImplicitInstantiationExplicitInstantiationDefExportedTemplateIiE1fEv
788 
fImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate789 template <typename T> struct __declspec(dllexport) ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate { virtual void f() {} };
790 ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate<int> ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplateInstance;
791 template struct __declspec(dllexport) ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate<int>;
792 USEMEMFUNC(ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate<int>, f);
793 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate@H@@UAEXXZ"
794 // G32-DAG: define weak_odr dso_local x86_thiscallcc void @_ZN69ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplateIiE1fEv
795 
796 namespace { struct InternalLinkageType {}; }
797 struct __declspec(dllexport) PR23308 {
798   void f(InternalLinkageType*);
799 };
f(InternalLinkageType *)800 void PR23308::f(InternalLinkageType*) {}
use(PR23308 * p)801 long use(PR23308* p) { p->f(nullptr); }
802 // M32-DAG: define internal x86_thiscallcc void @"?f@PR23308@@QAEXPAUInternalLinkageType@?A0x{{[^@]*}}@@@Z"
803 
fPR23770BaseTemplate804 template <typename T> struct PR23770BaseTemplate { void f() {} };
805 template <typename T> struct PR23770DerivedTemplate : PR23770BaseTemplate<int> {};
806 extern template struct PR23770DerivedTemplate<int>;
807 template struct __declspec(dllexport) PR23770DerivedTemplate<int>;
808 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$PR23770BaseTemplate@H@@QAEXXZ"
809 
810 namespace InClassInits {
811 
812 struct __declspec(dllexport) S {
813   int x = 42;
814 };
815 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0S@InClassInits@@QAE@XZ"
816 
817 // dllexport an already instantiated class template.
818 template <typename T> struct Base {
819   int x = 42;
820 };
821 Base<int> base;
822 struct __declspec(dllexport) T : Base<int> { };
823 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$Base@H@InClassInits@@QAE@XZ"
824 
825 struct A { A(int); };
826 struct __declspec(dllexport) U {
827   // Class with both default constructor closure and in-class initializer.
UInClassInits::U828   U(A = 0) {}
829   int x = 0;
830 };
831 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0U@InClassInits@@QAE@UA@1@@Z"
832 
833 struct Evil {
834   template <typename T> struct Base {
835     int x = 0;
836   };
837   struct S : Base<int> {};
838   // The already instantiated Base<int> becomes dllexported below, but the
839   // in-class initializer for Base<>::x still hasn't been parsed, so emitting
840   // the default ctor must still be delayed.
841   struct __declspec(dllexport) T : Base<int> {};
842 };
843 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$Base@H@Evil@InClassInits@@QAE@XZ"
844 
845 template <typename T> struct Foo {};
846 template <typename T> struct Bar {
operator =InClassInits::Bar847   Bar<T> &operator=(Foo<T>) {}
848 };
849 struct __declspec(dllexport) Baz {
850   Bar<int> n;
851 };
852 // After parsing Baz, in ActOnFinishCXXNonNestedClass we would synthesize
853 // Baz's operator=, causing instantiation of Foo<int> after which
854 // ActOnFinishCXXNonNestedClass is called, and we would bite our own tail.
855 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc nonnull align 1 dereferenceable(1) ptr @"??4Baz@InClassInits@@QAEAAU01@ABU01@@Z"
856 
857 // Trying to define the explicitly defaulted ctor must be delayed until the
858 // in-class initializer for x has been processed.
859 struct PR40006 {
860   __declspec(dllexport) PR40006() = default;
861   int x = 42;
862 };
863 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0PR40006@InClassInits@@QAE@XZ"
864 
865 namespace pr40006 {
866 // Delay emitting the method also past the instantiation of Tmpl<Inner>, i.e.
867 // until the top-level class Outer is completely finished.
868 template<typename> struct Tmpl {};
869 struct Outer {
870     struct Inner {
871         __declspec(dllexport) Inner() = default;
872         unsigned int x = 0;
873     };
874     Tmpl<Inner> y;
875 };
876 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0Inner@Outer@pr40006@InClassInits@@QAE@XZ"
877 }
878 
879 // PR42857: Clang would try to emit the non-trivial explicitly defaulted
880 // dllexport ctor twice when doing an explicit instantiation definition.
881 struct Qux { Qux(); };
882 template <typename T> struct PR42857 { __declspec(dllexport) PR42857() = default; Qux q; };
883 template struct PR42857<int>;
884 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$PR42857@H@InClassInits@@QAE@XZ"
885 
886 }
887 
888 // We had an issue where instantiating A would force emission of B's delayed
889 // exported methods.
890 namespace pr26490 {
891 template <typename T> struct A { };
892 struct __declspec(dllexport) B {
Bpr26490::B893   B(int = 0) {}
m_fn1pr26490::B894   A<int> m_fn1() {}
895 };
896 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FB@pr26490@@QAEXXZ"
897 }
898 
899 // dllexport trumps dllimport on an explicit instantiation.
fExplicitInstantiationTwoAttributes900 template <typename T> struct ExplicitInstantiationTwoAttributes { void f() {} };
901 template struct __declspec(dllexport) __declspec(dllimport) ExplicitInstantiationTwoAttributes<int>;
902 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?f@?$ExplicitInstantiationTwoAttributes@H@@QAEXXZ"
903 
904 namespace pr34849 {
905 // Specializations of exported class template member functions get exported.
906 template <typename> struct __declspec(dllexport) ExportedClassTemplate { void foo(); };
foo()907 template<> void ExportedClassTemplate<int>::foo() {}
908 template struct ExportedClassTemplate<int>;
909 // M32-DAG: define dso_local dllexport x86_thiscallcc void @"?foo@?$ExportedClassTemplate@H@pr34849@@QAEXXZ"
910 
911 // Specializations of exported class member template functions do not get exported.
912 struct __declspec(dllexport) ExportedClass { template <typename> void bar() ; };
bar()913 template<> void ExportedClass::bar<int>() {}
914 // M32-DAG: define dso_local x86_thiscallcc void @"??$bar@H@ExportedClass@pr34849@@QAEXXZ"
915 template <typename> struct __declspec(dllexport) ExportedClassTemplate2 { template <typename> void baz(); };
baz()916 template<> template<> void ExportedClassTemplate2<int>::baz<int>() {}
917 // M32-DAG: define dso_local x86_thiscallcc void @"??$baz@H@?$ExportedClassTemplate2@H@pr34849@@QAEXXZ"
918 }
919 
920 namespace pr47683 {
Xpr47683::X921 struct X { X() {} };
922 
923 template <typename> struct S {
924   S() = default;
925   X x;
926 };
927 template struct __declspec(dllexport) S<int>;
928 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$S@H@pr47683@@QAE@XZ"
929 
930 template <typename> struct T {
931   T() = default;
932   X x;
933 };
934 extern template struct T<int>;
935 template struct __declspec(dllexport) T<int>;
936 // Don't assert about multiple codegen for explicitly defaulted method in explicit instantiation def.
937 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$T@H@pr47683@@QAE@XZ"
938 
939 template <typename> struct U {
940   U();
941   X x;
942 };
943 template <typename T> U<T>::U() = default;
944 extern template struct U<int>;
945 template struct __declspec(dllexport) U<int>;
946 // Same as T, but with out-of-line ctor.
947 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0?$U@H@pr47683@@QAE@XZ"
948 }
949 
950 //===----------------------------------------------------------------------===//
951 // Classes with template base classes
952 //===----------------------------------------------------------------------===//
953 
954 template <typename T> struct ClassTemplate { void func(); };
func()955 template <typename T> void ClassTemplate<T>::func() {}
956 template <typename T> struct __declspec(dllexport) ExportedClassTemplate { void func(); };
func()957 template <typename T> void ExportedClassTemplate<T>::func() {}
958 template <typename T> struct __declspec(dllimport) ImportedClassTemplate { void func(); };
func()959 template <typename T> void ImportedClassTemplate<T>::func() {}
960 
funcExplicitlySpecializedTemplate961 template <typename T> struct ExplicitlySpecializedTemplate { void func() {} };
962 template <> struct ExplicitlySpecializedTemplate<int> { void func(); };
func()963 void ExplicitlySpecializedTemplate<int>::func() {}
funcExplicitlyExportSpecializedTemplate964 template <typename T> struct ExplicitlyExportSpecializedTemplate { void func() {} };
965 template <> struct __declspec(dllexport) ExplicitlyExportSpecializedTemplate<int> { void func(); };
func()966 void ExplicitlyExportSpecializedTemplate<int>::func() {}
967 template <typename T> struct ExplicitlyImportSpecializedTemplate { void func(); };
968 template <> struct __declspec(dllimport) ExplicitlyImportSpecializedTemplate<int> { void func(); };
969 
970 template <typename T> struct ExplicitlyInstantiatedTemplate { void func(); };
func()971 template <typename T> void ExplicitlyInstantiatedTemplate<T>::func() {}
972 template struct ExplicitlyInstantiatedTemplate<int>;
973 template <typename T> struct ExplicitlyExportInstantiatedTemplate { void func(); };
func()974 template <typename T> void ExplicitlyExportInstantiatedTemplate<T>::func() {}
975 template struct __declspec(dllexport) ExplicitlyExportInstantiatedTemplate<int>;
976 template <typename T> struct ExplicitlyImportInstantiatedTemplate { void func(); };
977 template struct __declspec(dllimport) ExplicitlyImportInstantiatedTemplate<int>;
978 
979 
980 // MS: ClassTemplate<int> gets exported.
981 struct __declspec(dllexport) DerivedFromTemplate : public ClassTemplate<int> {};
982 USEMEMFUNC(DerivedFromTemplate, func)
983 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?func@?$ClassTemplate@H@@QAEXXZ"
984 // G32-DAG: define linkonce_odr dso_local x86_thiscallcc void @_ZN13ClassTemplateIiE4funcEv
985 // PS-DAG:  define weak_odr dllexport void @_ZN13ClassTemplateIiE4funcEv
986 
987 // ExportedTemplate is explicitly exported.
988 struct __declspec(dllexport) DerivedFromExportedTemplate : public ExportedClassTemplate<int> {};
989 USEMEMFUNC(DerivedFromExportedTemplate, func)
990 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?func@?$ExportedClassTemplate@H@@QAEXXZ"
991 // G32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @_ZN21ExportedClassTemplateIiE4funcEv
992 // PS-DAG:  define weak_odr dllexport void @_ZN21ExportedClassTemplateIiE4funcEv
993 
994 // ImportedClassTemplate is explicitly imported.
995 struct __declspec(dllexport) DerivedFromImportedTemplate : public ImportedClassTemplate<int> {};
996 USEMEMFUNC(DerivedFromImportedTemplate, func)
997 // M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"?func@?$ImportedClassTemplate@H@@QAEXXZ"
998 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN21ImportedClassTemplateIiE4funcEv
999 // PS-DAG:  declare dllimport void @_ZN21ImportedClassTemplateIiE4funcEv
1000 
1001 // Base class already implicitly instantiated without dll attribute.
1002 struct DerivedFromTemplateD : public ClassTemplate<double> {};
1003 struct __declspec(dllexport) DerivedFromTemplateD2 : public ClassTemplate<double> {};
1004 USEMEMFUNC(DerivedFromTemplateD2, func)
1005 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?func@?$ClassTemplate@N@@QAEXXZ"
1006 // G32-DAG: define linkonce_odr dso_local x86_thiscallcc void @_ZN13ClassTemplateIdE4funcEv
1007 // PS-DAG:  define weak_odr dllexport void @_ZN13ClassTemplateIdE4funcEv
1008 
1009 // MS: Base class already instantiated with different dll attribute.
1010 struct __declspec(dllimport) DerivedFromTemplateB : public ClassTemplate<bool> {};
1011 struct __declspec(dllexport) DerivedFromTemplateB2 : public ClassTemplate<bool> {};
1012 USEMEMFUNC(DerivedFromTemplateB2, func)
1013 // M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"?func@?$ClassTemplate@_N@@QAEXXZ"
1014 // G32-DAG: define linkonce_odr dso_local x86_thiscallcc void @_ZN13ClassTemplateIbE4funcEv
1015 // PS-DAG:  declare dllimport void @_ZN13ClassTemplateIbE4funcEv
1016 
1017 // Base class already specialized without dll attribute.
1018 struct __declspec(dllexport) DerivedFromExplicitlySpecializedTemplate : public ExplicitlySpecializedTemplate<int> {};
1019 USEMEMFUNC(DerivedFromExplicitlySpecializedTemplate, func)
1020 // M32-DAG: define dso_local x86_thiscallcc void @"?func@?$ExplicitlySpecializedTemplate@H@@QAEXXZ"
1021 // G32-DAG: define dso_local x86_thiscallcc void @_ZN29ExplicitlySpecializedTemplateIiE4funcEv
1022 // PS-DAG:  define dso_local void @_ZN29ExplicitlySpecializedTemplateIiE4funcEv
1023 
1024 // Base class alredy specialized with export attribute.
1025 struct __declspec(dllexport) DerivedFromExplicitlyExportSpecializedTemplate : public ExplicitlyExportSpecializedTemplate<int> {};
1026 USEMEMFUNC(DerivedFromExplicitlyExportSpecializedTemplate, func)
1027 // M32-DAG: define dso_local dllexport x86_thiscallcc void @"?func@?$ExplicitlyExportSpecializedTemplate@H@@QAEXXZ"
1028 // G32-DAG: define dso_local dllexport x86_thiscallcc void @_ZN35ExplicitlyExportSpecializedTemplateIiE4funcEv
1029 // PS-DAG:  define dso_local dllexport void @_ZN35ExplicitlyExportSpecializedTemplateIiE4funcEv
1030 
1031 // Base class already specialized with import attribute.
1032 struct __declspec(dllexport) DerivedFromExplicitlyImportSpecializedTemplate : public ExplicitlyImportSpecializedTemplate<int> {};
1033 USEMEMFUNC(DerivedFromExplicitlyImportSpecializedTemplate, func)
1034 // M32-DAG: declare dllimport x86_thiscallcc void @"?func@?$ExplicitlyImportSpecializedTemplate@H@@QAEXXZ"
1035 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN35ExplicitlyImportSpecializedTemplateIiE4funcEv
1036 // PS-DAG:  declare dllimport void @_ZN35ExplicitlyImportSpecializedTemplateIiE4funcEv
1037 
1038 // Base class already instantiated without dll attribute.
1039 struct __declspec(dllexport) DerivedFromExplicitlyInstantiatedTemplate : public ExplicitlyInstantiatedTemplate<int> {};
1040 USEMEMFUNC(DerivedFromExplicitlyInstantiatedTemplate, func)
1041 // M32-DAG: define weak_odr dso_local x86_thiscallcc void @"?func@?$ExplicitlyInstantiatedTemplate@H@@QAEXXZ"
1042 // G32-DAG: define weak_odr dso_local x86_thiscallcc void @_ZN30ExplicitlyInstantiatedTemplateIiE4funcEv
1043 // PS-DAG:  define weak_odr void @_ZN30ExplicitlyInstantiatedTemplateIiE4funcEv
1044 
1045 // Base class already instantiated with export attribute.
1046 struct __declspec(dllexport) DerivedFromExplicitlyExportInstantiatedTemplate : public ExplicitlyExportInstantiatedTemplate<int> {};
1047 USEMEMFUNC(DerivedFromExplicitlyExportInstantiatedTemplate, func)
1048 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?func@?$ExplicitlyExportInstantiatedTemplate@H@@QAEXXZ"
1049 // G32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @_ZN36ExplicitlyExportInstantiatedTemplateIiE4funcEv
1050 // PS-DAG:  define weak_odr dllexport void @_ZN36ExplicitlyExportInstantiatedTemplateIiE4funcEv
1051 
1052 // Base class already instantiated with import attribute.
1053 struct __declspec(dllexport) DerivedFromExplicitlyImportInstantiatedTemplate : public ExplicitlyImportInstantiatedTemplate<int> {};
1054 USEMEMFUNC(DerivedFromExplicitlyImportInstantiatedTemplate, func)
1055 // M32-DAG: declare dllimport x86_thiscallcc void @"?func@?$ExplicitlyImportInstantiatedTemplate@H@@QAEXXZ"
1056 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN36ExplicitlyImportInstantiatedTemplateIiE4funcEv
1057 // PS-DAG:  declare dllimport void @_ZN36ExplicitlyImportInstantiatedTemplateIiE4funcEv
1058 
1059 // MS: A dll attribute propagates through multiple levels of instantiation.
funcTopClass1060 template <typename T> struct TopClass { void func() {} };
1061 template <typename T> struct MiddleClass : public TopClass<T> { };
1062 struct __declspec(dllexport) BottomClass : public MiddleClass<int> { };
1063 USEMEMFUNC(BottomClass, func)
1064 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?func@?$TopClass@H@@QAEXXZ"
1065 // G32-DAG: define linkonce_odr dso_local x86_thiscallcc void @_ZN8TopClassIiE4funcEv
1066 // PS-DAG:  define weak_odr dllexport void @_ZN8TopClassIiE4funcEv
1067 
funcExplicitInstantiationDeclTemplateBase1068 template <typename T> struct ExplicitInstantiationDeclTemplateBase { void func() {} };
1069 extern template struct ExplicitInstantiationDeclTemplateBase<int>;
1070 struct __declspec(dllexport) DerivedFromExplicitInstantiationDeclTemplateBase : public ExplicitInstantiationDeclTemplateBase<int> {};
1071 template struct ExplicitInstantiationDeclTemplateBase<int>;
1072 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc void @"?func@?$ExplicitInstantiationDeclTemplateBase@H@@QAEXXZ"
1073 // G32-DAG: define weak_odr dso_local x86_thiscallcc void @_ZN37ExplicitInstantiationDeclTemplateBaseIiE4funcEv
1074 // PS-DAG:  define weak_odr dllexport void @_ZN37ExplicitInstantiationDeclTemplateBaseIiE4funcEv
1075 
1076 // PR26076
1077 struct LayerSelectionBound;
1078 template <typename> struct Selection {};
1079 typedef Selection<LayerSelectionBound> LayerSelection;
1080 struct LayerImpl;
1081 struct __declspec(dllexport) LayerTreeImpl {
1082   struct __declspec(dllexport) ElementLayers {
1083     LayerImpl *main = nullptr;
1084   };
1085   LayerSelection foo;
1086 };
1087 // M32-DAG: define weak_odr dso_local dllexport x86_thiscallcc ptr @"??0ElementLayers@LayerTreeImpl@@QAE@XZ"
1088 // M64-DAG: define weak_odr dso_local dllexport ptr @"??0ElementLayers@LayerTreeImpl@@QEAA@XZ"
1089 
1090 namespace pr39496 {
1091 // Make sure dll attribute are inherited by static locals also in template
1092 // specializations.
foopr39496::S1093 template <typename> struct __declspec(dllexport) S { int foo() { static int x; return x++; } };
foo()1094 int foo() { S<int> s; return s.foo(); }
1095 // MSC-DAG: @"?x@?{{1|2}}??foo@?$S@H@pr39496@@Q{{[A-Z]*}}HXZ@4HA" = weak_odr dso_local dllexport global i32 0, comdat, align 4
1096 
foopr39496::T1097 template <typename> struct T { int foo() { static int x; return x++; } };
1098 template struct __declspec(dllexport) T<int>;
1099 // MSC-DAG: @"?x@?{{1|2}}??foo@?$T@H@pr39496@@Q{{[A-Z]*}}HXZ@4HA" = weak_odr dso_local dllexport global i32 0, comdat, align 4
1100 }
1101 
1102 class __declspec(dllexport) ACE_Shared_Object {
1103 public:
1104   virtual ~ACE_Shared_Object();
1105 };
1106 class __declspec(dllexport) ACE_Service_Object : public ACE_Shared_Object {};
1107 // Implicit move constructor declaration.
1108 // MSVC2015-DAG: define weak_odr dso_local dllexport {{.+}}ACE_Service_Object@@Q{{.+}}@$$Q
1109 // The declarations should not be exported.
1110 // MSVC2013-NOT: define weak_odr dso_local dllexport {{.+}}ACE_Service_Object@@Q{{.+}}@$$Q
1111