1 // RUN: %clang_cc1 -triple i686-windows-msvc   -emit-llvm -std=c++1y -O1 -mconstructor-aliases -disable-llvm-optzns -o - %s -w | FileCheck --check-prefix=MSC --check-prefix=M32 %s
2 // RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -std=c++1y -O0 -o - %s -w | FileCheck --check-prefix=MSC --check-prefix=M64 %s
3 // RUN: %clang_cc1 -triple i686-windows-gnu    -emit-llvm -std=c++1y -O0 -o - %s -w | FileCheck --check-prefix=GNU --check-prefix=G32 %s
4 // RUN: %clang_cc1 -triple x86_64-windows-gnu  -emit-llvm -std=c++1y -O0 -o - %s -w | FileCheck --check-prefix=GNU --check-prefix=G64 %s
5 
6 // Helper structs to make templates more expressive.
7 struct ImplicitInst_Exported {};
8 struct ExplicitDecl_Exported {};
9 struct ExplicitInst_Exported {};
10 struct ExplicitSpec_Exported {};
11 struct ExplicitSpec_Def_Exported {};
12 struct ExplicitSpec_InlineDef_Exported {};
13 struct ExplicitSpec_NotExported {};
14 struct External { int v; };
15 
16 #define JOIN2(x, y) x##y
17 #define JOIN(x, y) JOIN2(x, y)
18 #define UNIQ(name) JOIN(name, __LINE__)
19 #define USEVAR(var) int UNIQ(use)() { return var; }
20 #define USE(func) void UNIQ(use)() { func(); }
21 #define USEMEMFUNC(class, func) void (class::*UNIQ(use)())() { return &class::func; }
22 #define INSTVAR(var) template int var;
23 #define INST(func) template void func();
24 
25 // The vftable for struct W is comdat largest because we have RTTI.
26 // M32-DAG: $"\01??_7W@@6B@" = comdat largest
27 
28 
29 //===----------------------------------------------------------------------===//
30 // Globals
31 //===----------------------------------------------------------------------===//
32 
33 // Declarations are not exported.
34 // MSC-NOT: @"\01?ExternGlobalDecl@@3HA"
35 // GNU-NOT: @ExternGlobalDecl
36 __declspec(dllexport) extern int ExternGlobalDecl;
37 
38 // dllexport implies a definition.
39 // MSC-DAG: @"\01?GlobalDef@@3HA" = dllexport global i32 0, align 4
40 // GNU-DAG: @GlobalDef            = dllexport global i32 0, align 4
41 __declspec(dllexport) int GlobalDef;
42 
43 // Export definition.
44 // MSC-DAG: @"\01?GlobalInit1@@3HA" = dllexport global i32 1, align 4
45 // GNU-DAG: @GlobalInit1            = dllexport global i32 1, align 4
46 __declspec(dllexport) int GlobalInit1 = 1;
47 
48 // MSC-DAG: @"\01?GlobalInit2@@3HA" = dllexport global i32 1, align 4
49 // GNU-DAG: @GlobalInit2            = dllexport global i32 1, align 4
50 int __declspec(dllexport) GlobalInit2 = 1;
51 
52 // Declare, then export definition.
53 // MSC-DAG: @"\01?GlobalDeclInit@@3HA" = dllexport global i32 1, align 4
54 // GNU-DAG: @GlobalDeclInit            = dllexport global i32 1, align 4
55 __declspec(dllexport) extern int GlobalDeclInit;
56 int GlobalDeclInit = 1;
57 
58 // Redeclarations
59 // MSC-DAG: @"\01?GlobalRedecl1@@3HA" = dllexport global i32 0, align 4
60 // GNU-DAG: @GlobalRedecl1            = dllexport global i32 0, align 4
61 __declspec(dllexport) extern int GlobalRedecl1;
62 __declspec(dllexport)        int GlobalRedecl1;
63 
64 // MSC-DAG: @"\01?GlobalRedecl2@@3HA" = dllexport global i32 0, align 4
65 // GNU-DAG: @GlobalRedecl2            = dllexport global i32 0, align 4
66 __declspec(dllexport) extern int GlobalRedecl2;
67                              int GlobalRedecl2;
68 
69 // MSC-DAG: @"\01?ExternalGlobal@ns@@3HA" = dllexport global i32 0, align 4
70 // GNU-DAG: @_ZN2ns14ExternalGlobalE      = dllexport global i32 0, align 4
71 namespace ns { __declspec(dllexport) int ExternalGlobal; }
72 
73 // MSC-DAG: @"\01?ExternalAutoTypeGlobal@@3UExternal@@A" = dllexport global %struct.External zeroinitializer, align 4
74 // GNU-DAG: @ExternalAutoTypeGlobal                      = dllexport global %struct.External zeroinitializer, align 4
75 __declspec(dllexport) auto ExternalAutoTypeGlobal = External();
76 
77 int f();
78 // MSC-DAG: @"\01?x@?1??nonInlineStaticLocalsFunc@@YAHXZ@4HA" = internal {{(unnamed_addr )*}}global i32 0
79 // MSC-DAG: @"\01?$S1@?1??nonInlineStaticLocalsFunc@@YAHXZ@4IA" = internal {{(unnamed_addr )*}}global i32 0
nonInlineStaticLocalsFunc()80 int __declspec(dllexport) nonInlineStaticLocalsFunc() {
81   static int x = f();
82   return x++;
83 };
84 
85 // MSC-DAG: @"\01?x@?1??inlineStaticLocalsFunc@@YAHXZ@4HA" = weak_odr dllexport global i32 0, comdat
86 // MSC-DAG: @"\01??_B?1??inlineStaticLocalsFunc@@YAHXZ@51" = weak_odr dllexport global i32 0, comdat
87 // Note: MinGW doesn't seem to export the static local here.
inlineStaticLocalsFunc()88 inline int __declspec(dllexport) inlineStaticLocalsFunc() {
89   static int x = f();
90   return x++;
91 }
92 
93 
94 
95 //===----------------------------------------------------------------------===//
96 // Variable templates
97 //===----------------------------------------------------------------------===//
98 
99 // Declarations are not exported.
100 
101 // dllexport implies a definition.
102 // MSC-NOT: @"\01??$VarTmplDef@UExplicitInst_Exported@@@@3HA"
103 // GNU-NOT: @_Z10VarTmplDefI21ExplicitInst_ExportedE
104 template<typename T> __declspec(dllexport) int VarTmplDef;
105 INSTVAR(VarTmplDef<ExplicitInst_Exported>)
106 
107 // MSC-DAG: @"\01??$VarTmplImplicitDef@UImplicitInst_Exported@@@@3HA" = external dllexport global
108 // GNU-DAG: @_Z18VarTmplImplicitDefI21ImplicitInst_ExportedE          = external dllexport global
109 template<typename T> __declspec(dllexport) int VarTmplImplicitDef;
110 USEVAR(VarTmplImplicitDef<ImplicitInst_Exported>)
111 
112 // Export definition.
113 // MSC-DAG: @"\01??$VarTmplInit1@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
114 // GNU-DAG: @_Z12VarTmplInit1I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
115 template<typename T> __declspec(dllexport) int VarTmplInit1 = 1;
116 INSTVAR(VarTmplInit1<ExplicitInst_Exported>)
117 
118 // MSC-DAG: @"\01??$VarTmplInit2@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
119 // GNU-DAG: @_Z12VarTmplInit2I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
120 template<typename T> int __declspec(dllexport) VarTmplInit2 = 1;
121 INSTVAR(VarTmplInit2<ExplicitInst_Exported>)
122 
123 // Declare, then export definition.
124 // MSC-DAG: @"\01??$VarTmplDeclInit@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
125 // GNU-DAG: @_Z15VarTmplDeclInitI21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
126 template<typename T> __declspec(dllexport) extern int VarTmplDeclInit;
127 template<typename T>                              int VarTmplDeclInit = 1;
128 INSTVAR(VarTmplDeclInit<ExplicitInst_Exported>)
129 
130 // Redeclarations
131 // MSC-DAG: @"\01??$VarTmplRedecl1@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
132 // GNU-DAG: @_Z14VarTmplRedecl1I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
133 template<typename T> __declspec(dllexport) extern int VarTmplRedecl1;
134 template<typename T> __declspec(dllexport)        int VarTmplRedecl1 = 1;
135 INSTVAR(VarTmplRedecl1<ExplicitInst_Exported>)
136 
137 // MSC-DAG: @"\01??$VarTmplRedecl2@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
138 // GNU-DAG: @_Z14VarTmplRedecl2I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
139 template<typename T> __declspec(dllexport) extern int VarTmplRedecl2;
140 template<typename T>                              int VarTmplRedecl2 = 1;
141 INSTVAR(VarTmplRedecl2<ExplicitInst_Exported>)
142 
143 // MSC-DAG: @"\01??$ExternalVarTmpl@UExplicitInst_Exported@@@ns@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
144 // GNU-DAG: @_ZN2ns15ExternalVarTmplI21ExplicitInst_ExportedEE        = weak_odr dllexport global i32 1, comdat, align 4
145 namespace ns { template<typename T> __declspec(dllexport) int ExternalVarTmpl = 1; }
146 INSTVAR(ns::ExternalVarTmpl<ExplicitInst_Exported>)
147 
148 // MSC-DAG: @"\01??$ExternalAutoTypeVarTmpl@UExplicitInst_Exported@@@@3UExternal@@A" = weak_odr dllexport global %struct.External zeroinitializer, comdat, align 4
149 // GNU-DAG: @_Z23ExternalAutoTypeVarTmplI21ExplicitInst_ExportedE                    = weak_odr dllexport global %struct.External zeroinitializer, comdat, align 4
150 template<typename T> __declspec(dllexport) auto ExternalAutoTypeVarTmpl = External();
151 template External ExternalAutoTypeVarTmpl<ExplicitInst_Exported>;
152 
153 
154 template<typename T> int VarTmpl = 1;
155 template<typename T> __declspec(dllexport) int ExportedVarTmpl = 1;
156 
157 // Export implicit instantiation of an exported variable template.
158 // MSC-DAG: @"\01??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
159 // GNU-DAG: @_Z15ExportedVarTmplI21ImplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
160 USEVAR(ExportedVarTmpl<ImplicitInst_Exported>)
161 
162 // Export explicit instantiation declaration of an exported variable template.
163 // MSC-DAG: @"\01??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
164 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitDecl_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
165 extern template int ExportedVarTmpl<ExplicitDecl_Exported>;
166        template int ExportedVarTmpl<ExplicitDecl_Exported>;
167 
168 // Export explicit instantiation definition of an exported variable template.
169 // MSC-DAG: @"\01??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
170 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
171 template __declspec(dllexport) int ExportedVarTmpl<ExplicitInst_Exported>;
172 
173 // Export specialization of an exported variable template.
174 // MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_Exported@@@@3HA" = dllexport global i32 0, align 4
175 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitSpec_ExportedE          = dllexport global i32 0, align 4
176 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Exported>;
177 
178 // MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_Def_Exported@@@@3HA" = dllexport global i32 1, align 4
179 // GNU-DAG: @_Z15ExportedVarTmplI25ExplicitSpec_Def_ExportedE          = dllexport global i32 1, align 4
180 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Def_Exported> = 1;
181 
182 // Not exporting specialization of an exported variable template without
183 // explicit dllexport.
184 // MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_NotExported@@@@3HA" = global i32 0, align 4
185 // GNU-DAG: @_Z15ExportedVarTmplI24ExplicitSpec_NotExportedE          = global i32 0, align 4
186 template<> int ExportedVarTmpl<ExplicitSpec_NotExported>;
187 
188 
189 // Export explicit instantiation declaration of a non-exported variable template.
190 // MSC-DAG: @"\01??$VarTmpl@UExplicitDecl_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
191 // GNU-DAG: @_Z7VarTmplI21ExplicitDecl_ExportedE           = weak_odr dllexport global i32 1, comdat, align 4
192 extern template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
193        template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
194 
195 // Export explicit instantiation definition of a non-exported variable template.
196 // MSC-DAG: @"\01??$VarTmpl@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
197 // GNU-DAG: @_Z7VarTmplI21ExplicitInst_ExportedE           = weak_odr dllexport global i32 1, comdat, align 4
198 template __declspec(dllexport) int VarTmpl<ExplicitInst_Exported>;
199 
200 // Export specialization of a non-exported variable template.
201 // MSC-DAG: @"\01??$VarTmpl@UExplicitSpec_Exported@@@@3HA" = dllexport global i32 0, align 4
202 // GNU-DAG: @_Z7VarTmplI21ExplicitSpec_ExportedE           = dllexport global i32 0, align 4
203 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Exported>;
204 
205 // MSC-DAG: @"\01??$VarTmpl@UExplicitSpec_Def_Exported@@@@3HA" = dllexport global i32 1, align 4
206 // GNU-DAG: @_Z7VarTmplI25ExplicitSpec_Def_ExportedE           = dllexport global i32 1, align 4
207 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Def_Exported> = 1;
208 
209 
210 
211 //===----------------------------------------------------------------------===//
212 // Functions
213 //===----------------------------------------------------------------------===//
214 
215 // Declarations are not exported.
216 
217 // Export function definition.
218 // MSC-DAG: define dllexport void @"\01?def@@YAXXZ"()
219 // GNU-DAG: define dllexport void @_Z3defv()
def()220 __declspec(dllexport) void def() {}
221 
222 // extern "C"
223 // MSC-DAG: define dllexport void @externC()
224 // GNU-DAG: define dllexport void @externC()
externC()225 extern "C" __declspec(dllexport) void externC() {}
226 
227 // Export inline function.
228 // MSC-DAG: define weak_odr dllexport void @"\01?inlineFunc@@YAXXZ"()
229 // GNU-DAG: define weak_odr dllexport void @_Z10inlineFuncv()
inlineFunc()230 __declspec(dllexport) inline void inlineFunc() {}
231 
232 // MSC-DAG: define weak_odr dllexport void @"\01?inlineDecl@@YAXXZ"()
233 // GNU-DAG: define weak_odr dllexport void @_Z10inlineDeclv()
234 __declspec(dllexport) inline void inlineDecl();
inlineDecl()235                              void inlineDecl() {}
236 
237 // MSC-DAG: define weak_odr dllexport void @"\01?inlineDef@@YAXXZ"()
238 // GNU-DAG: define weak_odr dllexport void @_Z9inlineDefv()
239 __declspec(dllexport) void inlineDef();
inlineDef()240                inline void inlineDef() {}
241 
242 // Redeclarations
243 // MSC-DAG: define dllexport void @"\01?redecl1@@YAXXZ"()
244 // GNU-DAG: define dllexport void @_Z7redecl1v()
245 __declspec(dllexport) void redecl1();
redecl1()246 __declspec(dllexport) void redecl1() {}
247 
248 // MSC-DAG: define dllexport void @"\01?redecl2@@YAXXZ"()
249 // GNU-DAG: define dllexport void @_Z7redecl2v()
250 __declspec(dllexport) void redecl2();
redecl2()251                       void redecl2() {}
252 
253 // Friend functions
254 // MSC-DAG: define dllexport void @"\01?friend1@@YAXXZ"()
255 // GNU-DAG: define dllexport void @_Z7friend1v()
256 // MSC-DAG: define dllexport void @"\01?friend2@@YAXXZ"()
257 // GNU-DAG: define dllexport void @_Z7friend2v()
258 struct FuncFriend {
259   friend __declspec(dllexport) void friend1();
260   friend __declspec(dllexport) void friend2();
261 };
friend1()262 __declspec(dllexport) void friend1() {}
friend2()263                       void friend2() {}
264 
265 // Implicit declarations can be redeclared with dllexport.
266 // MSC-DAG: define dllexport noalias i8* @"\01??2@{{YAPAXI|YAPEAX_K}}@Z"(
267 // GNU-DAG: define dllexport noalias i8* @_Znw{{[yj]}}(
268 void* alloc(__SIZE_TYPE__ n);
operator new(__SIZE_TYPE__ n)269 __declspec(dllexport) void* operator new(__SIZE_TYPE__ n) { return alloc(n); }
270 
271 // MSC-DAG: define dllexport void @"\01?externalFunc@ns@@YAXXZ"()
272 // GNU-DAG: define dllexport void @_ZN2ns12externalFuncEv()
externalFunc()273 namespace ns { __declspec(dllexport) void externalFunc() {} }
274 
275 
276 
277 //===----------------------------------------------------------------------===//
278 // Function templates
279 //===----------------------------------------------------------------------===//
280 
281 // Export function template definition.
282 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplDef@UExplicitInst_Exported@@@@YAXXZ"()
283 // GNU-DAG: define weak_odr dllexport void @_Z11funcTmplDefI21ExplicitInst_ExportedEvv()
funcTmplDef()284 template<typename T> __declspec(dllexport) void funcTmplDef() {}
INST(funcTmplDef<ExplicitInst_Exported>)285 INST(funcTmplDef<ExplicitInst_Exported>)
286 
287 // Export inline function template.
288 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmpl1@UExplicitInst_Exported@@@@YAXXZ"()
289 // GNU-DAG: define weak_odr dllexport void @_Z15inlineFuncTmpl1I21ExplicitInst_ExportedEvv()
290 template<typename T> __declspec(dllexport) inline void inlineFuncTmpl1() {}
INST(inlineFuncTmpl1<ExplicitInst_Exported>)291 INST(inlineFuncTmpl1<ExplicitInst_Exported>)
292 
293 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmpl2@UExplicitInst_Exported@@@@YAXXZ"()
294 // GNU-DAG: define weak_odr dllexport void @_Z15inlineFuncTmpl2I21ExplicitInst_ExportedEvv()
295 template<typename T> inline void __attribute__((dllexport)) inlineFuncTmpl2() {}
296 INST(inlineFuncTmpl2<ExplicitInst_Exported>)
297 
298 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmplDecl@UExplicitInst_Exported@@@@YAXXZ"()
299 // GNU-DAG: define weak_odr dllexport void @_Z18inlineFuncTmplDeclI21ExplicitInst_ExportedEvv()
300 template<typename T> __declspec(dllexport) inline void inlineFuncTmplDecl();
inlineFuncTmplDecl()301 template<typename T>                              void inlineFuncTmplDecl() {}
302 INST(inlineFuncTmplDecl<ExplicitInst_Exported>)
303 
304 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmplDef@UExplicitInst_Exported@@@@YAXXZ"()
305 // GNU-DAG: define weak_odr dllexport void @_Z17inlineFuncTmplDefI21ExplicitInst_ExportedEvv()
306 template<typename T> __declspec(dllexport) void inlineFuncTmplDef();
inlineFuncTmplDef()307 template<typename T>                inline void inlineFuncTmplDef() {}
308 INST(inlineFuncTmplDef<ExplicitInst_Exported>)
309 
310 
311 // Redeclarations
312 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl1@UExplicitInst_Exported@@@@YAXXZ"()
313 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl1I21ExplicitInst_ExportedEvv()
314 template<typename T> __declspec(dllexport) void funcTmplRedecl1();
funcTmplRedecl1()315 template<typename T> __declspec(dllexport) void funcTmplRedecl1() {}
316 INST(funcTmplRedecl1<ExplicitInst_Exported>)
317 
318 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl2@UExplicitInst_Exported@@@@YAXXZ"()
319 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl2I21ExplicitInst_ExportedEvv()
320 template<typename T> __declspec(dllexport) void funcTmplRedecl2();
funcTmplRedecl2()321 template<typename T>                       void funcTmplRedecl2() {}
322 INST(funcTmplRedecl2<ExplicitInst_Exported>)
323 
324 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl3@UExplicitInst_Exported@@@@YAXXZ"()
325 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl3I21ExplicitInst_ExportedEvv()
326 template<typename T> __declspec(dllexport) void funcTmplRedecl3();
funcTmplRedecl3()327 template<typename T>                       void funcTmplRedecl3() {}
328 INST(funcTmplRedecl3<ExplicitInst_Exported>)
329 
330 
331 // Function template friends
332 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplFriend1@UExplicitInst_Exported@@@@YAXXZ"()
333 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplFriend1I21ExplicitInst_ExportedEvv()
334 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplFriend2@UExplicitInst_Exported@@@@YAXXZ"()
335 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplFriend2I21ExplicitInst_ExportedEvv()
336 struct FuncTmplFriend {
337   template<typename T> friend __declspec(dllexport) void funcTmplFriend1();
338   template<typename T> friend __declspec(dllexport) void funcTmplFriend2();
339 };
funcTmplFriend1()340 template<typename T> __declspec(dllexport) void funcTmplFriend1() {}
funcTmplFriend2()341 template<typename T>                       void funcTmplFriend2() {}
342 INST(funcTmplFriend1<ExplicitInst_Exported>)
343 INST(funcTmplFriend2<ExplicitInst_Exported>)
344 
345 // MSC-DAG: define weak_odr dllexport void @"\01??$externalFuncTmpl@UExplicitInst_Exported@@@ns@@YAXXZ"()
346 // GNU-DAG: define weak_odr dllexport void @_ZN2ns16externalFuncTmplI21ExplicitInst_ExportedEEvv()
externalFuncTmpl()347 namespace ns { template<typename T> __declspec(dllexport) void externalFuncTmpl() {} }
INST(ns::externalFuncTmpl<ExplicitInst_Exported>)348 INST(ns::externalFuncTmpl<ExplicitInst_Exported>)
349 
350 
351 template<typename T> void funcTmpl() {}
exportedFuncTmpl()352 template<typename T> __declspec(dllexport) void exportedFuncTmpl() {}
353 
354 // Export implicit instantiation of an exported function template.
355 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UImplicitInst_Exported@@@@YAXXZ"()
356 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ImplicitInst_ExportedEvv()
357 USE(exportedFuncTmpl<ImplicitInst_Exported>)
358 
359 // Export explicit instantiation declaration of an exported function template.
360 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitDecl_Exported@@@@YAXXZ"()
361 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ExplicitDecl_ExportedEvv()
362 extern template void exportedFuncTmpl<ExplicitDecl_Exported>();
363        template void exportedFuncTmpl<ExplicitDecl_Exported>();
364 
365 // Export explicit instantiation definition of an exported function template.
366 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitInst_Exported@@@@YAXXZ"()
367 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ExplicitInst_ExportedEvv()
368 template void exportedFuncTmpl<ExplicitInst_Exported>();
369 
370 // Export specialization of an exported function template.
371 // MSC-DAG: define dllexport void @"\01??$exportedFuncTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"()
372 // GNU-DAG: define dllexport void @_Z16exportedFuncTmplI25ExplicitSpec_Def_ExportedEvv()
exportedFuncTmpl()373 template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Def_Exported>() {}
374 
375 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"()
376 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI31ExplicitSpec_InlineDef_ExportedEvv()
exportedFuncTmpl()377 template<> __declspec(dllexport) inline void exportedFuncTmpl<ExplicitSpec_InlineDef_Exported>() {}
378 
379 // Not exporting specialization of an exported function template without
380 // explicit dllexport.
381 // MSC-DAG: define void @"\01??$exportedFuncTmpl@UExplicitSpec_NotExported@@@@YAXXZ"()
382 // GNU-DAG: define void @_Z16exportedFuncTmplI24ExplicitSpec_NotExportedEvv()
exportedFuncTmpl()383 template<> void exportedFuncTmpl<ExplicitSpec_NotExported>() {}
384 
385 
386 // Export explicit instantiation declaration of a non-exported function template.
387 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitDecl_Exported@@@@YAXXZ"()
388 // GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI21ExplicitDecl_ExportedEvv()
389 extern template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
390        template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
391 
392 // Export explicit instantiation definition of a non-exported function template.
393 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitInst_Exported@@@@YAXXZ"()
394 // GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI21ExplicitInst_ExportedEvv()
395 template __declspec(dllexport) void funcTmpl<ExplicitInst_Exported>();
396 
397 // Export specialization of a non-exported function template.
398 // MSC-DAG: define dllexport void @"\01??$funcTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"()
399 // GNU-DAG: define dllexport void @_Z8funcTmplI25ExplicitSpec_Def_ExportedEvv()
funcTmpl()400 template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Def_Exported>() {}
401 
402 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"()
403 // GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI31ExplicitSpec_InlineDef_ExportedEvv()
funcTmpl()404 template<> __declspec(dllexport) inline void funcTmpl<ExplicitSpec_InlineDef_Exported>() {}
405 
406 
407 
408 //===----------------------------------------------------------------------===//
409 // Precedence
410 //===----------------------------------------------------------------------===//
411 
412 // dllexport takes precedence over the dllimport if both are specified.
413 // MSC-DAG: @"\01?PrecedenceGlobal1A@@3HA" = dllexport global i32 0, align 4
414 // MSC-DAG: @"\01?PrecedenceGlobal1B@@3HA" = dllexport global i32 0, align 4
415 // GNU-DAG: @PrecedenceGlobal1A            = dllexport global i32 0, align 4
416 // GNU-DAG: @PrecedenceGlobal1B            = dllexport global i32 0, align 4
417 __attribute__((dllimport, dllexport))       int PrecedenceGlobal1A; // dllimport ignored
418 __declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B; // dllimport ignored
419 
420 // MSC-DAG: @"\01?PrecedenceGlobal2A@@3HA" = dllexport global i32 0, align 4
421 // MSC-DAG: @"\01?PrecedenceGlobal2B@@3HA" = dllexport global i32 0, align 4
422 // GNU-DAG: @PrecedenceGlobal2A            = dllexport global i32 0, align 4
423 // GNU-DAG: @PrecedenceGlobal2B            = dllexport global i32 0, align 4
424 __attribute__((dllexport, dllimport))       int PrecedenceGlobal2A; // dllimport ignored
425 __declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B; // dllimport ignored
426 
427 // MSC-DAG: @"\01?PrecedenceGlobalRedecl1@@3HA" = dllexport global i32 0, align 4
428 // GNU-DAG: @PrecedenceGlobalRedecl1            = dllexport global i32 0, align 4
429 __declspec(dllexport) extern int PrecedenceGlobalRedecl1;
430 __declspec(dllimport)        int PrecedenceGlobalRedecl1 = 0;
431 
432 // MSC-DAG: @"\01?PrecedenceGlobalRedecl2@@3HA" = dllexport global i32 0, align 4
433 // GNU-DAG: @PrecedenceGlobalRedecl2            = dllexport global i32 0, align 4
434 __declspec(dllimport) extern int PrecedenceGlobalRedecl2;
435 __declspec(dllexport)        int PrecedenceGlobalRedecl2;
436 
437 // MSC-DAG: @"\01?PrecedenceGlobalMixed1@@3HA" = dllexport global i32 0, align 4
438 // GNU-DAG: @PrecedenceGlobalMixed1            = dllexport global i32 0, align 4
439 __attribute__((dllexport)) extern int PrecedenceGlobalMixed1;
440 __declspec(dllimport)             int PrecedenceGlobalMixed1 = 0;
441 
442 // MSC-DAG: @"\01?PrecedenceGlobalMixed2@@3HA" = dllexport global i32 0, align 4
443 // GNU-DAG: @PrecedenceGlobalMixed2            = dllexport global i32 0, align 4
444 __attribute__((dllimport)) extern int PrecedenceGlobalMixed2;
445 __declspec(dllexport)             int PrecedenceGlobalMixed2;
446 
447 // MSC-DAG: define dllexport void @"\01?precedence1A@@YAXXZ"
448 // MSC-DAG: define dllexport void @"\01?precedence1B@@YAXXZ"
449 // GNU-DAG: define dllexport void @_Z12precedence1Av()
450 // GNU-DAG: define dllexport void @_Z12precedence1Bv()
precedence1A()451 void __attribute__((dllimport, dllexport))       precedence1A() {}
precedence1B()452 void __declspec(dllimport) __declspec(dllexport) precedence1B() {}
453 
454 // MSC-DAG: define dllexport void @"\01?precedence2A@@YAXXZ"
455 // MSC-DAG: define dllexport void @"\01?precedence2B@@YAXXZ"
456 // GNU-DAG: define dllexport void @_Z12precedence2Av()
457 // GNU-DAG: define dllexport void @_Z12precedence2Bv()
precedence2A()458 void __attribute__((dllexport, dllimport))       precedence2A() {}
precedence2B()459 void __declspec(dllexport) __declspec(dllimport) precedence2B() {}
460 
461 // MSC-DAG: define dllexport void @"\01?precedenceRedecl1@@YAXXZ"
462 // GNU-DAG: define dllexport void @_Z17precedenceRedecl1v()
463 void __declspec(dllimport) precedenceRedecl1();
precedenceRedecl1()464 void __declspec(dllexport) precedenceRedecl1() {}
465 
466 // MSC-DAG: define dllexport void @"\01?precedenceRedecl2@@YAXXZ"
467 // GNU-DAG: define dllexport void @_Z17precedenceRedecl2v()
468 void __declspec(dllexport) precedenceRedecl2();
precedenceRedecl2()469 void __declspec(dllimport) precedenceRedecl2() {}
470 
471 
472 
473 //===----------------------------------------------------------------------===//
474 // Classes
475 //===----------------------------------------------------------------------===//
476 
477 struct S {
aS478   void __declspec(dllexport) a() {}
479   // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@S@@QAEXXZ"
480 
481   struct T {
aS::T482     void __declspec(dllexport) a() {}
483     // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@T@S@@QAEXXZ"
484   };
485 };
486 
487 struct CtorWithClosure {
CtorWithClosureCtorWithClosure488   __declspec(dllexport) CtorWithClosure(...) {}
489 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FCtorWithClosure@@QAEXXZ"
490 // M32-DAG:   %[[this_addr:.*]] = alloca %struct.CtorWithClosure*, align 4
491 // M32-DAG:   store %struct.CtorWithClosure* %this, %struct.CtorWithClosure** %[[this_addr]], align 4
492 // M32-DAG:   %[[this:.*]] = load %struct.CtorWithClosure*, %struct.CtorWithClosure** %[[this_addr]]
493 // M32-DAG:   call %struct.CtorWithClosure* (%struct.CtorWithClosure*, ...) @"\01??0CtorWithClosure@@QAA@ZZ"(%struct.CtorWithClosure* %[[this]])
494 // M32-DAG:   ret void
495 };
496 
497 #define DELETE_IMPLICIT_MEMBERS(ClassName) \
498     ClassName(ClassName &&) = delete; \
499     ClassName(ClassName &) = delete; \
500     ~ClassName() = delete; \
501     ClassName &operator=(ClassName &) = delete
502 
503 struct __declspec(dllexport) ClassWithClosure {
504   DELETE_IMPLICIT_MEMBERS(ClassWithClosure);
ClassWithClosureClassWithClosure505   ClassWithClosure(...) {}
506 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FClassWithClosure@@QAEXXZ"
507 // M32-DAG:   %[[this_addr:.*]] = alloca %struct.ClassWithClosure*, align 4
508 // M32-DAG:   store %struct.ClassWithClosure* %this, %struct.ClassWithClosure** %[[this_addr]], align 4
509 // M32-DAG:   %[[this:.*]] = load %struct.ClassWithClosure*, %struct.ClassWithClosure** %[[this_addr]]
510 // M32-DAG:   call %struct.ClassWithClosure* (%struct.ClassWithClosure*, ...) @"\01??0ClassWithClosure@@QAA@ZZ"(%struct.ClassWithClosure* %[[this]])
511 // M32-DAG:   ret void
512 };
513 
514 struct __declspec(dllexport) NestedOuter {
515   DELETE_IMPLICIT_MEMBERS(NestedOuter);
NestedOuterNestedOuter516   NestedOuter(void *p = 0) {}
517   struct __declspec(dllexport) NestedInner {
518     DELETE_IMPLICIT_MEMBERS(NestedInner);
NestedInnerNestedOuter::NestedInner519     NestedInner(void *p = 0) {}
520   };
521 };
522 
523 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FNestedOuter@@QAEXXZ"
524 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FNestedInner@NestedOuter@@QAEXXZ"
525 
526 template <typename T>
527 struct SomeTemplate {
SomeTemplateSomeTemplate528   SomeTemplate(T o = T()) : o(o) {}
529   T o;
530 };
531 struct __declspec(dllexport) InheritFromTemplate : SomeTemplate<int> {};
532 
533 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_F?$SomeTemplate@H@@QAEXXZ"
534 
535 struct __declspec(dllexport) T {
536   // Copy assignment operator:
537   // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.T* @"\01??4T@@QAEAAU0@ABU0@@Z"
538 
539   // Explicitly defaulted copy constructur:
540   T(const T&) = default;
541   // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.T* @"\01??0T@@QAE@ABU0@@Z"
542 
aT543   void a() {}
544   // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@T@@QAEXXZ"
545 
546   static int b;
547   // M32-DAG: @"\01?b@T@@2HA" = external dllexport global i32
548 
549   static int c;
550   // M32-DAG: @"\01?c@T@@2HA" = dllexport global i32 0, align 4
551 };
552 
553 USEVAR(T::b)
554 int T::c;
555 
fooU556 template <typename T> struct __declspec(dllexport) U { void foo() {} };
557 struct __declspec(dllexport) V : public U<int> { };
558 // U<int>'s assignment operator is emitted.
559 // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.U* @"\01??4?$U@H@@QAEAAU0@ABU0@@Z"
560 
561 struct __declspec(dllexport) W { virtual void foo(); };
foo()562 void W::foo() {}
563 // Default ctor:
564 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.W* @"\01??0W@@QAE@XZ"
565 // Copy ctor:
566 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.W* @"\01??0W@@QAE@ABU0@@Z"
567 // vftable:
568 // M32-DAG: [[W_VTABLE:@.*]] = private unnamed_addr constant [2 x i8*] [i8* bitcast (%rtti.CompleteObjectLocator* @"\01??_R4W@@6B@" to i8*), i8* bitcast (void (%struct.W*)* @"\01?foo@W@@UAEXXZ" to i8*)], comdat($"\01??_7W@@6B@")
569 // M32-DAG: @"\01??_7W@@6B@" = dllexport unnamed_addr alias getelementptr inbounds ([2 x i8*], [2 x i8*]* [[W_VTABLE]], i32 0, i32 1)
570 // G32-DAG: @_ZTV1W = dllexport unnamed_addr constant [3 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI1W to i8*), i8* bitcast (void (%struct.W*)* @_ZN1W3fooEv to i8*)]
571 
572 struct __declspec(dllexport) X : public virtual W {};
573 // vbtable:
574 // M32-DAG: @"\01??_8X@@7B@" = weak_odr dllexport unnamed_addr constant [2 x i32] [i32 0, i32 4]
575 
576 struct __declspec(dllexport) Y {
577   // Move assignment operator:
578   // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.Y* @"\01??4Y@@QAEAAU0@$$QAU0@@Z"
579 
580   int x;
581 };
582 
~ZZ583 struct __declspec(dllexport) Z { virtual ~Z() {} };
584 // The scalar deleting dtor does not get exported:
585 // M32-DAG: define linkonce_odr x86_thiscallcc i8* @"\01??_GZ@@UAEPAXI@Z"
586 
587 
588 // The user-defined dtor does get exported:
589 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??1Z@@UAE@XZ"
590 
591 namespace UseDtorAlias {
592   struct __declspec(dllexport) A { ~A(); };
593   struct __declspec(dllexport) B : A { ~B(); };
~A()594   A::~A() { }
~B()595   B::~B() { }
596   // Emit a alias definition of B's constructor.
597   // M32-DAG: @"\01??1B@UseDtorAlias@@QAE@XZ" = dllexport alias {{.*}} @"\01??1A@UseDtorAlias@@QAE@XZ"
598 
599 }
600 
601 struct __declspec(dllexport) DefaultedCtorsDtors {
602   DefaultedCtorsDtors() = default;
603   // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.DefaultedCtorsDtors* @"\01??0DefaultedCtorsDtors@@QAE@XZ"
604   ~DefaultedCtorsDtors() = default;
605   // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??1DefaultedCtorsDtors@@QAE@XZ"
606 };
607 
608 namespace ReferencedInlineMethodInNestedClass {
609   struct __declspec(dllexport) S {
fooReferencedInlineMethodInNestedClass::S610     void foo() {
611       t->bar();
612     }
613     struct T {
barReferencedInlineMethodInNestedClass::S::T614       void bar() {}
615     };
616     T *t;
617   };
618   // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?foo@S@ReferencedInlineMethodInNestedClass@@QAEXXZ"
619   // M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?bar@T@S@ReferencedInlineMethodInNestedClass@@QAEXXZ"
620 }
621 
622 // MS ignores DLL attributes on partial specializations.
623 template <typename T> struct PartiallySpecializedClassTemplate {};
624 template <typename T> struct __declspec(dllexport) PartiallySpecializedClassTemplate<T*> { void f(); };
f()625 template <typename T> void PartiallySpecializedClassTemplate<T*>::f() {}
626 USEMEMFUNC(PartiallySpecializedClassTemplate<void*>, f);
627 // M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?f@?$PartiallySpecializedClassTemplate@PAX@@QAEXXZ"
628 // G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN33PartiallySpecializedClassTemplateIPvE1fEv
629 
630 // Attributes on explicit specializations are honored.
631 template <typename T> struct ExplicitlySpecializedClassTemplate {};
632 template <> struct __declspec(dllexport) ExplicitlySpecializedClassTemplate<void*> { void f(); };
f()633 void ExplicitlySpecializedClassTemplate<void*>::f() {}
634 USEMEMFUNC(ExplicitlySpecializedClassTemplate<void*>, f);
635 // M32-DAG: define dllexport x86_thiscallcc void @"\01?f@?$ExplicitlySpecializedClassTemplate@PAX@@QAEXXZ"
636 // G32-DAG: define dllexport x86_thiscallcc void @_ZN34ExplicitlySpecializedClassTemplateIPvE1fEv
637 
638 // MS inherits DLL attributes to partial specializations.
639 template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate {};
fPartiallySpecializedExportedClassTemplate640 template <typename T> struct PartiallySpecializedExportedClassTemplate<T*> { void f() {} };
641 USEMEMFUNC(PartiallySpecializedExportedClassTemplate<void*>, f);
642 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PartiallySpecializedExportedClassTemplate@PAX@@QAEXXZ"
643 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN41PartiallySpecializedExportedClassTemplateIPvE1fEv
644 
645 // MS ignores DLL attributes on partial specializations; inheritance still works though.
646 template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate2 {};
647 template <typename T> struct __declspec(dllimport) PartiallySpecializedExportedClassTemplate2<T*> { void f(); };
f()648 template <typename T> void PartiallySpecializedExportedClassTemplate2<T*>::f() {}
649 USEMEMFUNC(PartiallySpecializedExportedClassTemplate2<void*>, f);
650 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PartiallySpecializedExportedClassTemplate2@PAX@@QAEXXZ"
651 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN42PartiallySpecializedExportedClassTemplate2IPvE1fEv
652 
653 // Attributes on the instantiation take precedence over attributes on the template.
fExplicitlyInstantiatedWithDifferentAttr654 template <typename T> struct __declspec(dllimport) ExplicitlyInstantiatedWithDifferentAttr { void f() {} };
655 template struct __declspec(dllexport) ExplicitlyInstantiatedWithDifferentAttr<int>;
656 USEMEMFUNC(ExplicitlyInstantiatedWithDifferentAttr<int>, f);
657 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ExplicitlyInstantiatedWithDifferentAttr@H@@QAEXXZ"
658 
659 // Don't create weak dllexport aliases. (PR21373)
660 struct NonExportedBaseClass {
661   virtual ~NonExportedBaseClass();
662 };
~NonExportedBaseClass()663 NonExportedBaseClass::~NonExportedBaseClass() {}
664 
665 struct __declspec(dllexport) ExportedDerivedClass : NonExportedBaseClass {};
666 // M32-DAG: weak_odr dllexport x86_thiscallcc void @"\01??1ExportedDerivedClass@@UAE@XZ"
667 
668 // Do not assert about generating code for constexpr functions twice during explicit instantiation (PR21718).
669 template <typename T> struct ExplicitInstConstexprMembers {
670   // Copy assignment operator
671   // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable(1) %struct.ExplicitInstConstexprMembers* @"\01??4?$ExplicitInstConstexprMembers@X@@QAEAAU0@ABU0@@Z"
672 
ExplicitInstConstexprMembersExplicitInstConstexprMembers673   constexpr ExplicitInstConstexprMembers() {}
674   // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstConstexprMembers* @"\01??0?$ExplicitInstConstexprMembers@X@@QAE@XZ"
675 
676   ExplicitInstConstexprMembers(const ExplicitInstConstexprMembers&) = default;
677   // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstConstexprMembers* @"\01??0?$ExplicitInstConstexprMembers@X@@QAE@ABU0@@Z"
678 
fExplicitInstConstexprMembers679   constexpr int f() const { return 42; }
680   // M32-DAG: define weak_odr dllexport x86_thiscallcc i32 @"\01?f@?$ExplicitInstConstexprMembers@X@@QBEHXZ"
681 };
682 template struct __declspec(dllexport) ExplicitInstConstexprMembers<void>;
683 
fExplicitInstantiationDeclTemplate684 template <typename T> struct ExplicitInstantiationDeclTemplate { void f() {} };
685 extern template struct __declspec(dllexport) ExplicitInstantiationDeclTemplate<int>;
686 USEMEMFUNC(ExplicitInstantiationDeclTemplate<int>, f);
687 // M32-DAG: {{declare|define available_externally}} x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclTemplate@H@@QAEXXZ"
688 
fExplicitInstantiationDeclExportedTemplate689 template <typename T> struct __declspec(dllexport) ExplicitInstantiationDeclExportedTemplate { void f() {} };
690 extern template struct ExplicitInstantiationDeclExportedTemplate<int>;
691 USEMEMFUNC(ExplicitInstantiationDeclExportedTemplate<int>, f);
692 // M32-DAG: {{declare|define available_externally}} x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclExportedTemplate@H@@QAEXXZ"
693 
694 
695 //===----------------------------------------------------------------------===//
696 // Classes with template base classes
697 //===----------------------------------------------------------------------===//
698 
699 template <typename T> struct ClassTemplate { void func(); };
func()700 template <typename T> void ClassTemplate<T>::func() {}
701 template <typename T> struct __declspec(dllexport) ExportedClassTemplate { void func(); };
func()702 template <typename T> void ExportedClassTemplate<T>::func() {}
703 template <typename T> struct __declspec(dllimport) ImportedClassTemplate { void func(); };
func()704 template <typename T> void ImportedClassTemplate<T>::func() {}
705 
funcExplicitlySpecializedTemplate706 template <typename T> struct ExplicitlySpecializedTemplate { void func() {} };
707 template <> struct ExplicitlySpecializedTemplate<int> { void func(); };
func()708 void ExplicitlySpecializedTemplate<int>::func() {}
funcExplicitlyExportSpecializedTemplate709 template <typename T> struct ExplicitlyExportSpecializedTemplate { void func() {} };
710 template <> struct __declspec(dllexport) ExplicitlyExportSpecializedTemplate<int> { void func(); };
func()711 void ExplicitlyExportSpecializedTemplate<int>::func() {}
712 template <typename T> struct ExplicitlyImportSpecializedTemplate { void func(); };
713 template <> struct __declspec(dllimport) ExplicitlyImportSpecializedTemplate<int> { void func(); };
714 
715 template <typename T> struct ExplicitlyInstantiatedTemplate { void func(); };
func()716 template <typename T> void ExplicitlyInstantiatedTemplate<T>::func() {}
717 template struct ExplicitlyInstantiatedTemplate<int>;
718 template <typename T> struct ExplicitlyExportInstantiatedTemplate { void func(); };
func()719 template <typename T> void ExplicitlyExportInstantiatedTemplate<T>::func() {}
720 template struct __declspec(dllexport) ExplicitlyExportInstantiatedTemplate<int>;
721 template <typename T> struct ExplicitlyImportInstantiatedTemplate { void func(); };
722 template struct __declspec(dllimport) ExplicitlyImportInstantiatedTemplate<int>;
723 
724 
725 // MS: ClassTemplate<int> gets exported.
726 struct __declspec(dllexport) DerivedFromTemplate : public ClassTemplate<int> {};
727 USEMEMFUNC(DerivedFromTemplate, func)
728 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ClassTemplate@H@@QAEXXZ"
729 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIiE4funcEv
730 
731 // ExportedTemplate is explicitly exported.
732 struct __declspec(dllexport) DerivedFromExportedTemplate : public ExportedClassTemplate<int> {};
733 USEMEMFUNC(DerivedFromExportedTemplate, func)
734 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExportedClassTemplate@H@@QAEXXZ"
735 // G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN21ExportedClassTemplateIiE4funcEv
736 
737 // ImportedClassTemplate is explicitly imported.
738 struct __declspec(dllexport) DerivedFromImportedTemplate : public ImportedClassTemplate<int> {};
739 USEMEMFUNC(DerivedFromImportedTemplate, func)
740 // M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ImportedClassTemplate@H@@QAEXXZ"
741 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN21ImportedClassTemplateIiE4funcEv
742 
743 // Base class already instantiated without dll attribute.
744 struct DerivedFromTemplateD : public ClassTemplate<double> {};
745 struct __declspec(dllexport) DerivedFromTemplateD2 : public ClassTemplate<double> {};
746 USEMEMFUNC(DerivedFromTemplateD2, func)
747 // M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?func@?$ClassTemplate@N@@QAEXXZ"
748 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIdE4funcEv
749 
750 // MS: Base class already instantiated with different dll attribute.
751 struct __declspec(dllimport) DerivedFromTemplateB : public ClassTemplate<bool> {};
752 struct __declspec(dllexport) DerivedFromTemplateB2 : public ClassTemplate<bool> {};
753 USEMEMFUNC(DerivedFromTemplateB2, func)
754 // M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ClassTemplate@_N@@QAEXXZ"
755 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIbE4funcEv
756 
757 // Base class already specialized without dll attribute.
758 struct __declspec(dllexport) DerivedFromExplicitlySpecializedTemplate : public ExplicitlySpecializedTemplate<int> {};
759 USEMEMFUNC(DerivedFromExplicitlySpecializedTemplate, func)
760 // M32-DAG: define x86_thiscallcc void @"\01?func@?$ExplicitlySpecializedTemplate@H@@QAEXXZ"
761 // G32-DAG: define x86_thiscallcc void @_ZN29ExplicitlySpecializedTemplateIiE4funcEv
762 
763 // Base class alredy specialized with export attribute.
764 struct __declspec(dllexport) DerivedFromExplicitlyExportSpecializedTemplate : public ExplicitlyExportSpecializedTemplate<int> {};
765 USEMEMFUNC(DerivedFromExplicitlyExportSpecializedTemplate, func)
766 // M32-DAG: define dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportSpecializedTemplate@H@@QAEXXZ"
767 // G32-DAG: define dllexport x86_thiscallcc void @_ZN35ExplicitlyExportSpecializedTemplateIiE4funcEv
768 
769 // Base class already specialized with import attribute.
770 struct __declspec(dllexport) DerivedFromExplicitlyImportSpecializedTemplate : public ExplicitlyImportSpecializedTemplate<int> {};
771 USEMEMFUNC(DerivedFromExplicitlyImportSpecializedTemplate, func)
772 // M32-DAG: declare dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportSpecializedTemplate@H@@QAEXXZ"
773 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN35ExplicitlyImportSpecializedTemplateIiE4funcEv
774 
775 // Base class already instantiated without dll attribute.
776 struct __declspec(dllexport) DerivedFromExplicitlyInstantiatedTemplate : public ExplicitlyInstantiatedTemplate<int> {};
777 USEMEMFUNC(DerivedFromExplicitlyInstantiatedTemplate, func)
778 // M32-DAG: define weak_odr x86_thiscallcc void @"\01?func@?$ExplicitlyInstantiatedTemplate@H@@QAEXXZ"
779 // G32-DAG: define weak_odr x86_thiscallcc void @_ZN30ExplicitlyInstantiatedTemplateIiE4funcEv
780 
781 // Base class already instantiated with export attribute.
782 struct __declspec(dllexport) DerivedFromExplicitlyExportInstantiatedTemplate : public ExplicitlyExportInstantiatedTemplate<int> {};
783 USEMEMFUNC(DerivedFromExplicitlyExportInstantiatedTemplate, func)
784 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportInstantiatedTemplate@H@@QAEXXZ"
785 // G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN36ExplicitlyExportInstantiatedTemplateIiE4funcEv
786 
787 // Base class already instantiated with import attribute.
788 struct __declspec(dllexport) DerivedFromExplicitlyImportInstantiatedTemplate : public ExplicitlyImportInstantiatedTemplate<int> {};
789 USEMEMFUNC(DerivedFromExplicitlyImportInstantiatedTemplate, func)
790 // M32-DAG: declare dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportInstantiatedTemplate@H@@QAEXXZ"
791 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN36ExplicitlyImportInstantiatedTemplateIiE4funcEv
792 
793 // MS: A dll attribute propagates through multiple levels of instantiation.
funcTopClass794 template <typename T> struct TopClass { void func() {} };
795 template <typename T> struct MiddleClass : public TopClass<T> { };
796 struct __declspec(dllexport) BottomClass : public MiddleClass<int> { };
797 USEMEMFUNC(BottomClass, func)
798 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$TopClass@H@@QAEXXZ"
799 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN8TopClassIiE4funcEv
800