1 // RUN: %clang_cc1 -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 --check-prefix=MSC --check-prefix=M32 -check-prefix=MSVC2015 -check-prefix=M32MSVC2015 %s
2 // RUN: %clang_cc1 -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 --check-prefix=MSC --check-prefix=M32 -check-prefix=MSVC2013 -check-prefix=M32MSVC2013 %s
3 
4 // RUN: %clang_cc1 -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 --check-prefix=MSC --check-prefix=M64 -check-prefix=MSVC2015 -check-prefix=M64MSVC2015 %s
5 // RUN: %clang_cc1 -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 --check-prefix=MSC --check-prefix=M64 -check-prefix=MSVC2013 -check-prefix=M64MSVC2013 %s
6 
7 // RUN: %clang_cc1 -triple i686-windows-gnu    -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w | FileCheck --check-prefix=GNU --check-prefix=G32 %s
8 // RUN: %clang_cc1 -triple x86_64-windows-gnu  -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w | FileCheck --check-prefix=GNU --check-prefix=G64 %s
9 
10 // Helper structs to make templates more expressive.
11 struct ImplicitInst_Exported {};
12 struct ExplicitDecl_Exported {};
13 struct ExplicitInst_Exported {};
14 struct ExplicitSpec_Exported {};
15 struct ExplicitSpec_Def_Exported {};
16 struct ExplicitSpec_InlineDef_Exported {};
17 struct ExplicitSpec_NotExported {};
18 struct External { int v; };
19 
20 #define JOIN2(x, y) x##y
21 #define JOIN(x, y) JOIN2(x, y)
22 #define UNIQ(name) JOIN(name, __LINE__)
23 #define USEVAR(var) int UNIQ(use)() { return var; }
24 #define USE(func) void UNIQ(use)() { func(); }
25 #define USEMEMFUNC(class, func) void (class::*UNIQ(use)())() { return &class::func; }
26 #define INSTVAR(var) template int var;
27 #define INST(func) template void func();
28 
29 // The vftable for struct W is comdat largest because we have RTTI.
30 // M32-DAG: $"\01??_7W@@6B@" = comdat largest
31 
32 
33 //===----------------------------------------------------------------------===//
34 // Globals
35 //===----------------------------------------------------------------------===//
36 
37 // Declarations are not exported.
38 // MSC-NOT: @"\01?ExternGlobalDecl@@3HA"
39 // GNU-NOT: @ExternGlobalDecl
40 __declspec(dllexport) extern int ExternGlobalDecl;
41 
42 // dllexport implies a definition.
43 // MSC-DAG: @"\01?GlobalDef@@3HA" = dllexport global i32 0, align 4
44 // GNU-DAG: @GlobalDef            = dllexport global i32 0, align 4
45 __declspec(dllexport) int GlobalDef;
46 
47 // Export definition.
48 // MSC-DAG: @"\01?GlobalInit1@@3HA" = dllexport global i32 1, align 4
49 // GNU-DAG: @GlobalInit1            = dllexport global i32 1, align 4
50 __declspec(dllexport) int GlobalInit1 = 1;
51 
52 // MSC-DAG: @"\01?GlobalInit2@@3HA" = dllexport global i32 1, align 4
53 // GNU-DAG: @GlobalInit2            = dllexport global i32 1, align 4
54 int __declspec(dllexport) GlobalInit2 = 1;
55 
56 // Declare, then export definition.
57 // MSC-DAG: @"\01?GlobalDeclInit@@3HA" = dllexport global i32 1, align 4
58 // GNU-DAG: @GlobalDeclInit            = dllexport global i32 1, align 4
59 __declspec(dllexport) extern int GlobalDeclInit;
60 int GlobalDeclInit = 1;
61 
62 // Redeclarations
63 // MSC-DAG: @"\01?GlobalRedecl1@@3HA" = dllexport global i32 0, align 4
64 // GNU-DAG: @GlobalRedecl1            = dllexport global i32 0, align 4
65 __declspec(dllexport) extern int GlobalRedecl1;
66 __declspec(dllexport)        int GlobalRedecl1;
67 
68 // MSC-DAG: @"\01?GlobalRedecl2@@3HA" = dllexport global i32 0, align 4
69 // GNU-DAG: @GlobalRedecl2            = dllexport global i32 0, align 4
70 __declspec(dllexport) extern int GlobalRedecl2;
71                              int GlobalRedecl2;
72 
73 // MSC-DAG: @"\01?ExternalGlobal@ns@@3HA" = dllexport global i32 0, align 4
74 // GNU-DAG: @_ZN2ns14ExternalGlobalE      = dllexport global i32 0, align 4
75 namespace ns { __declspec(dllexport) int ExternalGlobal; }
76 
77 // MSC-DAG: @"\01?ExternalAutoTypeGlobal@@3UExternal@@A" = dllexport global %struct.External zeroinitializer, align 4
78 // GNU-DAG: @ExternalAutoTypeGlobal                      = dllexport global %struct.External zeroinitializer, align 4
79 __declspec(dllexport) auto ExternalAutoTypeGlobal = External();
80 
81 int f();
82 // MSC-DAG: @"\01?x@?1??nonInlineStaticLocalsFunc@@YAHXZ@4HA" = internal {{(unnamed_addr )*}}global i32 0
83 // MSC-DAG: @"\01?$S1@?1??nonInlineStaticLocalsFunc@@YAHXZ@4IA" = internal {{(unnamed_addr )*}}global i32 0
84 int __declspec(dllexport) nonInlineStaticLocalsFunc() {
85   static int x = f();
86   return x++;
87 };
88 
89 // MSC-DAG: @"\01?x@?1??inlineStaticLocalsFunc@@YAHXZ@4HA" = weak_odr dllexport global i32 0, comdat
90 // MSC-DAG: @"\01??_B?1??inlineStaticLocalsFunc@@YAHXZ@51" = weak_odr dllexport global i32 0, comdat
91 // Note: MinGW doesn't seem to export the static local here.
92 inline int __declspec(dllexport) inlineStaticLocalsFunc() {
93   static int x = f();
94   return x++;
95 }
96 
97 
98 
99 //===----------------------------------------------------------------------===//
100 // Variable templates
101 //===----------------------------------------------------------------------===//
102 
103 // Declarations are not exported.
104 
105 // MSC-DAG: @"\01??$VarTmplImplicitDef@UImplicitInst_Exported@@@@3HA" = external global
106 // GNU-DAG: @_Z18VarTmplImplicitDefI21ImplicitInst_ExportedE          = external global
107 template<typename T> __declspec(dllexport) extern int VarTmplImplicitDef;
108 USEVAR(VarTmplImplicitDef<ImplicitInst_Exported>)
109 
110 // Export definition.
111 // MSC-DAG: @"\01??$VarTmplInit1@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
112 // GNU-DAG: @_Z12VarTmplInit1I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
113 template<typename T> __declspec(dllexport) int VarTmplInit1 = 1;
114 INSTVAR(VarTmplInit1<ExplicitInst_Exported>)
115 
116 // MSC-DAG: @"\01??$VarTmplInit2@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
117 // GNU-DAG: @_Z12VarTmplInit2I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
118 template<typename T> int __declspec(dllexport) VarTmplInit2 = 1;
119 INSTVAR(VarTmplInit2<ExplicitInst_Exported>)
120 
121 // Declare, then export definition.
122 // MSC-DAG: @"\01??$VarTmplDeclInit@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
123 // GNU-DAG: @_Z15VarTmplDeclInitI21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
124 template<typename T> __declspec(dllexport) extern int VarTmplDeclInit;
125 template<typename T>                              int VarTmplDeclInit = 1;
126 INSTVAR(VarTmplDeclInit<ExplicitInst_Exported>)
127 
128 // Redeclarations
129 // MSC-DAG: @"\01??$VarTmplRedecl1@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
130 // GNU-DAG: @_Z14VarTmplRedecl1I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
131 template<typename T> __declspec(dllexport) extern int VarTmplRedecl1;
132 template<typename T> __declspec(dllexport)        int VarTmplRedecl1 = 1;
133 INSTVAR(VarTmplRedecl1<ExplicitInst_Exported>)
134 
135 // MSC-DAG: @"\01??$VarTmplRedecl2@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
136 // GNU-DAG: @_Z14VarTmplRedecl2I21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
137 template<typename T> __declspec(dllexport) extern int VarTmplRedecl2;
138 template<typename T>                              int VarTmplRedecl2 = 1;
139 INSTVAR(VarTmplRedecl2<ExplicitInst_Exported>)
140 
141 // MSC-DAG: @"\01??$ExternalVarTmpl@UExplicitInst_Exported@@@ns@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
142 // GNU-DAG: @_ZN2ns15ExternalVarTmplI21ExplicitInst_ExportedEE        = weak_odr dllexport global i32 1, comdat, align 4
143 namespace ns { template<typename T> __declspec(dllexport) int ExternalVarTmpl = 1; }
144 INSTVAR(ns::ExternalVarTmpl<ExplicitInst_Exported>)
145 
146 // MSC-DAG: @"\01??$ExternalAutoTypeVarTmpl@UExplicitInst_Exported@@@@3UExternal@@A" = weak_odr dllexport global %struct.External zeroinitializer, comdat, align 4
147 // GNU-DAG: @_Z23ExternalAutoTypeVarTmplI21ExplicitInst_ExportedE                    = weak_odr dllexport global %struct.External zeroinitializer, comdat, align 4
148 template<typename T> __declspec(dllexport) auto ExternalAutoTypeVarTmpl = External();
149 template External ExternalAutoTypeVarTmpl<ExplicitInst_Exported>;
150 
151 
152 template<typename T> int VarTmpl = 1;
153 template<typename T> __declspec(dllexport) int ExportedVarTmpl = 1;
154 
155 // Export implicit instantiation of an exported variable template.
156 // MSC-DAG: @"\01??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
157 // GNU-DAG: @_Z15ExportedVarTmplI21ImplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
158 USEVAR(ExportedVarTmpl<ImplicitInst_Exported>)
159 
160 // Export explicit instantiation declaration of an exported variable template.
161 // MSC-DAG: @"\01??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
162 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitDecl_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
163 extern template int ExportedVarTmpl<ExplicitDecl_Exported>;
164        template int ExportedVarTmpl<ExplicitDecl_Exported>;
165 
166 // Export explicit instantiation definition of an exported variable template.
167 // MSC-DAG: @"\01??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
168 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitInst_ExportedE          = weak_odr dllexport global i32 1, comdat, align 4
169 template __declspec(dllexport) int ExportedVarTmpl<ExplicitInst_Exported>;
170 
171 // Export specialization of an exported variable template.
172 // MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_Exported@@@@3HA" = dllexport global i32 0, align 4
173 // GNU-DAG: @_Z15ExportedVarTmplI21ExplicitSpec_ExportedE          = dllexport global i32 0, align 4
174 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Exported>;
175 
176 // MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_Def_Exported@@@@3HA" = dllexport global i32 1, align 4
177 // GNU-DAG: @_Z15ExportedVarTmplI25ExplicitSpec_Def_ExportedE          = dllexport global i32 1, align 4
178 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Def_Exported> = 1;
179 
180 // Not exporting specialization of an exported variable template without
181 // explicit dllexport.
182 // MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_NotExported@@@@3HA" = global i32 0, align 4
183 // GNU-DAG: @_Z15ExportedVarTmplI24ExplicitSpec_NotExportedE          = global i32 0, align 4
184 template<> int ExportedVarTmpl<ExplicitSpec_NotExported>;
185 
186 
187 // Export explicit instantiation declaration of a non-exported variable template.
188 // MSC-DAG: @"\01??$VarTmpl@UExplicitDecl_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
189 // GNU-DAG: @_Z7VarTmplI21ExplicitDecl_ExportedE           = weak_odr dllexport global i32 1, comdat, align 4
190 extern template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
191        template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
192 
193 // Export explicit instantiation definition of a non-exported variable template.
194 // MSC-DAG: @"\01??$VarTmpl@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4
195 // GNU-DAG: @_Z7VarTmplI21ExplicitInst_ExportedE           = weak_odr dllexport global i32 1, comdat, align 4
196 template __declspec(dllexport) int VarTmpl<ExplicitInst_Exported>;
197 
198 // Export specialization of a non-exported variable template.
199 // MSC-DAG: @"\01??$VarTmpl@UExplicitSpec_Exported@@@@3HA" = dllexport global i32 0, align 4
200 // GNU-DAG: @_Z7VarTmplI21ExplicitSpec_ExportedE           = dllexport global i32 0, align 4
201 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Exported>;
202 
203 // MSC-DAG: @"\01??$VarTmpl@UExplicitSpec_Def_Exported@@@@3HA" = dllexport global i32 1, align 4
204 // GNU-DAG: @_Z7VarTmplI25ExplicitSpec_Def_ExportedE           = dllexport global i32 1, align 4
205 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Def_Exported> = 1;
206 
207 
208 
209 //===----------------------------------------------------------------------===//
210 // Functions
211 //===----------------------------------------------------------------------===//
212 
213 // Declarations are not exported.
214 
215 // Export function definition.
216 // MSC-DAG: define dllexport void @"\01?def@@YAXXZ"()
217 // GNU-DAG: define dllexport void @_Z3defv()
218 __declspec(dllexport) void def() {}
219 
220 // extern "C"
221 // MSC-DAG: define dllexport void @externC()
222 // GNU-DAG: define dllexport void @externC()
223 extern "C" __declspec(dllexport) void externC() {}
224 
225 // Export inline function.
226 // MSC-DAG: define weak_odr dllexport void @"\01?inlineFunc@@YAXXZ"()
227 // GNU-DAG: define weak_odr dllexport void @_Z10inlineFuncv()
228 __declspec(dllexport) inline void inlineFunc() {}
229 
230 // MSC-DAG: define weak_odr dllexport void @"\01?inlineDecl@@YAXXZ"()
231 // GNU-DAG: define weak_odr dllexport void @_Z10inlineDeclv()
232 __declspec(dllexport) inline void inlineDecl();
233                              void inlineDecl() {}
234 
235 // MSC-DAG: define weak_odr dllexport void @"\01?inlineDef@@YAXXZ"()
236 // GNU-DAG: define weak_odr dllexport void @_Z9inlineDefv()
237 __declspec(dllexport) void inlineDef();
238                inline void inlineDef() {}
239 
240 // Redeclarations
241 // MSC-DAG: define dllexport void @"\01?redecl1@@YAXXZ"()
242 // GNU-DAG: define dllexport void @_Z7redecl1v()
243 __declspec(dllexport) void redecl1();
244 __declspec(dllexport) void redecl1() {}
245 
246 // MSC-DAG: define dllexport void @"\01?redecl2@@YAXXZ"()
247 // GNU-DAG: define dllexport void @_Z7redecl2v()
248 __declspec(dllexport) void redecl2();
249                       void redecl2() {}
250 
251 // Friend functions
252 // MSC-DAG: define dllexport void @"\01?friend1@@YAXXZ"()
253 // GNU-DAG: define dllexport void @_Z7friend1v()
254 // MSC-DAG: define dllexport void @"\01?friend2@@YAXXZ"()
255 // GNU-DAG: define dllexport void @_Z7friend2v()
256 struct FuncFriend {
257   friend __declspec(dllexport) void friend1();
258   friend __declspec(dllexport) void friend2();
259 };
260 __declspec(dllexport) void friend1() {}
261                       void friend2() {}
262 
263 // Implicit declarations can be redeclared with dllexport.
264 // MSC-DAG: define dllexport noalias i8* @"\01??2@{{YAPAXI|YAPEAX_K}}@Z"(
265 // GNU-DAG: define dllexport noalias i8* @_Znw{{[yj]}}(
266 void* alloc(__SIZE_TYPE__ n);
267 __declspec(dllexport) void* operator new(__SIZE_TYPE__ n) { return alloc(n); }
268 
269 // MSC-DAG: define dllexport void @"\01?externalFunc@ns@@YAXXZ"()
270 // GNU-DAG: define dllexport void @_ZN2ns12externalFuncEv()
271 namespace ns { __declspec(dllexport) void externalFunc() {} }
272 
273 
274 
275 //===----------------------------------------------------------------------===//
276 // Function templates
277 //===----------------------------------------------------------------------===//
278 
279 // Export function template definition.
280 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplDef@UExplicitInst_Exported@@@@YAXXZ"()
281 // GNU-DAG: define weak_odr dllexport void @_Z11funcTmplDefI21ExplicitInst_ExportedEvv()
282 template<typename T> __declspec(dllexport) void funcTmplDef() {}
283 INST(funcTmplDef<ExplicitInst_Exported>)
284 
285 // Export inline function template.
286 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmpl1@UExplicitInst_Exported@@@@YAXXZ"()
287 // GNU-DAG: define weak_odr dllexport void @_Z15inlineFuncTmpl1I21ExplicitInst_ExportedEvv()
288 template<typename T> __declspec(dllexport) inline void inlineFuncTmpl1() {}
289 INST(inlineFuncTmpl1<ExplicitInst_Exported>)
290 
291 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmpl2@UExplicitInst_Exported@@@@YAXXZ"()
292 // GNU-DAG: define weak_odr dllexport void @_Z15inlineFuncTmpl2I21ExplicitInst_ExportedEvv()
293 template<typename T> inline void __attribute__((dllexport)) inlineFuncTmpl2() {}
294 INST(inlineFuncTmpl2<ExplicitInst_Exported>)
295 
296 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmplDecl@UExplicitInst_Exported@@@@YAXXZ"()
297 // GNU-DAG: define weak_odr dllexport void @_Z18inlineFuncTmplDeclI21ExplicitInst_ExportedEvv()
298 template<typename T> __declspec(dllexport) inline void inlineFuncTmplDecl();
299 template<typename T>                              void inlineFuncTmplDecl() {}
300 INST(inlineFuncTmplDecl<ExplicitInst_Exported>)
301 
302 // MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmplDef@UExplicitInst_Exported@@@@YAXXZ"()
303 // GNU-DAG: define weak_odr dllexport void @_Z17inlineFuncTmplDefI21ExplicitInst_ExportedEvv()
304 template<typename T> __declspec(dllexport) void inlineFuncTmplDef();
305 template<typename T>                inline void inlineFuncTmplDef() {}
306 INST(inlineFuncTmplDef<ExplicitInst_Exported>)
307 
308 
309 // Redeclarations
310 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl1@UExplicitInst_Exported@@@@YAXXZ"()
311 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl1I21ExplicitInst_ExportedEvv()
312 template<typename T> __declspec(dllexport) void funcTmplRedecl1();
313 template<typename T> __declspec(dllexport) void funcTmplRedecl1() {}
314 INST(funcTmplRedecl1<ExplicitInst_Exported>)
315 
316 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl2@UExplicitInst_Exported@@@@YAXXZ"()
317 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl2I21ExplicitInst_ExportedEvv()
318 template<typename T> __declspec(dllexport) void funcTmplRedecl2();
319 template<typename T>                       void funcTmplRedecl2() {}
320 INST(funcTmplRedecl2<ExplicitInst_Exported>)
321 
322 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl3@UExplicitInst_Exported@@@@YAXXZ"()
323 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl3I21ExplicitInst_ExportedEvv()
324 template<typename T> __declspec(dllexport) void funcTmplRedecl3();
325 template<typename T>                       void funcTmplRedecl3() {}
326 INST(funcTmplRedecl3<ExplicitInst_Exported>)
327 
328 
329 // Function template friends
330 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplFriend1@UExplicitInst_Exported@@@@YAXXZ"()
331 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplFriend1I21ExplicitInst_ExportedEvv()
332 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplFriend2@UExplicitInst_Exported@@@@YAXXZ"()
333 // GNU-DAG: define weak_odr dllexport void @_Z15funcTmplFriend2I21ExplicitInst_ExportedEvv()
334 struct FuncTmplFriend {
335   template<typename T> friend __declspec(dllexport) void funcTmplFriend1();
336   template<typename T> friend __declspec(dllexport) void funcTmplFriend2();
337 };
338 template<typename T> __declspec(dllexport) void funcTmplFriend1() {}
339 template<typename T>                       void funcTmplFriend2() {}
340 INST(funcTmplFriend1<ExplicitInst_Exported>)
341 INST(funcTmplFriend2<ExplicitInst_Exported>)
342 
343 // MSC-DAG: define weak_odr dllexport void @"\01??$externalFuncTmpl@UExplicitInst_Exported@@@ns@@YAXXZ"()
344 // GNU-DAG: define weak_odr dllexport void @_ZN2ns16externalFuncTmplI21ExplicitInst_ExportedEEvv()
345 namespace ns { template<typename T> __declspec(dllexport) void externalFuncTmpl() {} }
346 INST(ns::externalFuncTmpl<ExplicitInst_Exported>)
347 
348 
349 template<typename T> void funcTmpl() {}
350 template<typename T> __declspec(dllexport) void exportedFuncTmpl() {}
351 
352 // Export implicit instantiation of an exported function template.
353 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UImplicitInst_Exported@@@@YAXXZ"()
354 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ImplicitInst_ExportedEvv()
355 USE(exportedFuncTmpl<ImplicitInst_Exported>)
356 
357 // Export explicit instantiation declaration of an exported function template.
358 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitDecl_Exported@@@@YAXXZ"()
359 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ExplicitDecl_ExportedEvv()
360 extern template void exportedFuncTmpl<ExplicitDecl_Exported>();
361        template void exportedFuncTmpl<ExplicitDecl_Exported>();
362 
363 // Export explicit instantiation definition of an exported function template.
364 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitInst_Exported@@@@YAXXZ"()
365 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ExplicitInst_ExportedEvv()
366 template void exportedFuncTmpl<ExplicitInst_Exported>();
367 
368 // Export specialization of an exported function template.
369 // MSC-DAG: define dllexport void @"\01??$exportedFuncTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"()
370 // GNU-DAG: define dllexport void @_Z16exportedFuncTmplI25ExplicitSpec_Def_ExportedEvv()
371 template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Def_Exported>() {}
372 
373 // MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"()
374 // GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI31ExplicitSpec_InlineDef_ExportedEvv()
375 template<> __declspec(dllexport) inline void exportedFuncTmpl<ExplicitSpec_InlineDef_Exported>() {}
376 
377 // Not exporting specialization of an exported function template without
378 // explicit dllexport.
379 // MSC-DAG: define void @"\01??$exportedFuncTmpl@UExplicitSpec_NotExported@@@@YAXXZ"()
380 // GNU-DAG: define void @_Z16exportedFuncTmplI24ExplicitSpec_NotExportedEvv()
381 template<> void exportedFuncTmpl<ExplicitSpec_NotExported>() {}
382 
383 
384 // Export explicit instantiation declaration of a non-exported function template.
385 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitDecl_Exported@@@@YAXXZ"()
386 // GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI21ExplicitDecl_ExportedEvv()
387 extern template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
388        template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
389 
390 // Export explicit instantiation definition of a non-exported function template.
391 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitInst_Exported@@@@YAXXZ"()
392 // GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI21ExplicitInst_ExportedEvv()
393 template __declspec(dllexport) void funcTmpl<ExplicitInst_Exported>();
394 
395 // Export specialization of a non-exported function template.
396 // MSC-DAG: define dllexport void @"\01??$funcTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"()
397 // GNU-DAG: define dllexport void @_Z8funcTmplI25ExplicitSpec_Def_ExportedEvv()
398 template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Def_Exported>() {}
399 
400 // MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"()
401 // GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI31ExplicitSpec_InlineDef_ExportedEvv()
402 template<> __declspec(dllexport) inline void funcTmpl<ExplicitSpec_InlineDef_Exported>() {}
403 
404 
405 
406 //===----------------------------------------------------------------------===//
407 // Precedence
408 //===----------------------------------------------------------------------===//
409 
410 // dllexport takes precedence over the dllimport if both are specified.
411 // MSC-DAG: @"\01?PrecedenceGlobal1A@@3HA" = dllexport global i32 0, align 4
412 // MSC-DAG: @"\01?PrecedenceGlobal1B@@3HA" = dllexport global i32 0, align 4
413 // GNU-DAG: @PrecedenceGlobal1A            = dllexport global i32 0, align 4
414 // GNU-DAG: @PrecedenceGlobal1B            = dllexport global i32 0, align 4
415 __attribute__((dllimport, dllexport))       int PrecedenceGlobal1A; // dllimport ignored
416 __declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B; // dllimport ignored
417 
418 // MSC-DAG: @"\01?PrecedenceGlobal2A@@3HA" = dllexport global i32 0, align 4
419 // MSC-DAG: @"\01?PrecedenceGlobal2B@@3HA" = dllexport global i32 0, align 4
420 // GNU-DAG: @PrecedenceGlobal2A            = dllexport global i32 0, align 4
421 // GNU-DAG: @PrecedenceGlobal2B            = dllexport global i32 0, align 4
422 __attribute__((dllexport, dllimport))       int PrecedenceGlobal2A; // dllimport ignored
423 __declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B; // dllimport ignored
424 
425 // MSC-DAG: @"\01?PrecedenceGlobalRedecl1@@3HA" = dllexport global i32 0, align 4
426 // GNU-DAG: @PrecedenceGlobalRedecl1            = dllexport global i32 0, align 4
427 __declspec(dllexport) extern int PrecedenceGlobalRedecl1;
428 __declspec(dllimport)        int PrecedenceGlobalRedecl1 = 0;
429 
430 // MSC-DAG: @"\01?PrecedenceGlobalRedecl2@@3HA" = dllexport global i32 0, align 4
431 // GNU-DAG: @PrecedenceGlobalRedecl2            = dllexport global i32 0, align 4
432 __declspec(dllimport) extern int PrecedenceGlobalRedecl2;
433 __declspec(dllexport)        int PrecedenceGlobalRedecl2;
434 
435 // MSC-DAG: @"\01?PrecedenceGlobalMixed1@@3HA" = dllexport global i32 0, align 4
436 // GNU-DAG: @PrecedenceGlobalMixed1            = dllexport global i32 0, align 4
437 __attribute__((dllexport)) extern int PrecedenceGlobalMixed1;
438 __declspec(dllimport)             int PrecedenceGlobalMixed1 = 0;
439 
440 // MSC-DAG: @"\01?PrecedenceGlobalMixed2@@3HA" = dllexport global i32 0, align 4
441 // GNU-DAG: @PrecedenceGlobalMixed2            = dllexport global i32 0, align 4
442 __attribute__((dllimport)) extern int PrecedenceGlobalMixed2;
443 __declspec(dllexport)             int PrecedenceGlobalMixed2;
444 
445 // MSC-DAG: define dllexport void @"\01?precedence1A@@YAXXZ"
446 // MSC-DAG: define dllexport void @"\01?precedence1B@@YAXXZ"
447 // GNU-DAG: define dllexport void @_Z12precedence1Av()
448 // GNU-DAG: define dllexport void @_Z12precedence1Bv()
449 void __attribute__((dllimport, dllexport))       precedence1A() {}
450 void __declspec(dllimport) __declspec(dllexport) precedence1B() {}
451 
452 // MSC-DAG: define dllexport void @"\01?precedence2A@@YAXXZ"
453 // MSC-DAG: define dllexport void @"\01?precedence2B@@YAXXZ"
454 // GNU-DAG: define dllexport void @_Z12precedence2Av()
455 // GNU-DAG: define dllexport void @_Z12precedence2Bv()
456 void __attribute__((dllexport, dllimport))       precedence2A() {}
457 void __declspec(dllexport) __declspec(dllimport) precedence2B() {}
458 
459 // MSC-DAG: define dllexport void @"\01?precedenceRedecl1@@YAXXZ"
460 // GNU-DAG: define dllexport void @_Z17precedenceRedecl1v()
461 void __declspec(dllimport) precedenceRedecl1();
462 void __declspec(dllexport) precedenceRedecl1() {}
463 
464 // MSC-DAG: define dllexport void @"\01?precedenceRedecl2@@YAXXZ"
465 // GNU-DAG: define dllexport void @_Z17precedenceRedecl2v()
466 void __declspec(dllexport) precedenceRedecl2();
467 void __declspec(dllimport) precedenceRedecl2() {}
468 
469 
470 
471 //===----------------------------------------------------------------------===//
472 // Classes
473 //===----------------------------------------------------------------------===//
474 
475 struct S {
476   void __declspec(dllexport) a() {}
477   // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@S@@QAEXXZ"
478 
479   struct T {
480     void __declspec(dllexport) a() {}
481     // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@T@S@@QAEXXZ"
482   };
483 };
484 
485 template <typename T>
486 struct SomeTemplate {
487   SomeTemplate(T o = T()) : o(o) {}
488   T o;
489 };
490 // MSVC2015-DAG: define weak_odr dllexport {{.+}} @"\01??4?$SomeTemplate@H@@Q{{.+}}@$$Q{{.+}}@@Z"
491 // MSVC2013-DAG: define weak_odr dllexport {{.+}} @"\01??4?$SomeTemplate@H@@Q{{.+}}0@A{{.+}}0@@Z"
492 struct __declspec(dllexport) InheritFromTemplate : SomeTemplate<int> {};
493 
494 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_F?$SomeTemplate@H@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
495 
496 namespace PR23801 {
497 template <typename>
498 struct S {
499   ~S() {}
500 };
501 struct A {
502   A(int);
503   S<int> s;
504 };
505 struct __declspec(dllexport) B {
506   B(A = 0) {}
507 };
508 
509 }
510 //
511 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FB@PR23801@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
512 
513 struct __declspec(dllexport) T {
514   // Copy assignment operator:
515   // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.T* @"\01??4T@@QAEAAU0@ABU0@@Z"
516 
517   // Explicitly defaulted copy constructur:
518   T(const T&) = default;
519   // M32MSVC2013-DAG: define weak_odr dllexport x86_thiscallcc %struct.T* @"\01??0T@@QAE@ABU0@@Z"
520 
521   void a() {}
522   // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@T@@QAEXXZ"
523 
524   static int b;
525   // M32-DAG: @"\01?b@T@@2HA" = external global i32
526 
527   static int c;
528   // M32-DAG: @"\01?c@T@@2HA" = dllexport global i32 0, align 4
529 };
530 
531 USEVAR(T::b)
532 int T::c;
533 
534 // Export template class with static member variable
535 // MSC-DAG: @"\01?StaticClassVarExpTmplClass@?$TmplClass@H@@2HA" = weak_odr dllexport global i32 0, comdat, align 4
536 // GNU-DAG: @_ZN9TmplClassIiE26StaticClassVarExpTmplClassE = weak_odr dllexport global i32 0, comdat, align 4
537 template<typename T>
538 struct __declspec(dllexport) TmplClass
539 {
540   static T StaticClassVarExpTmplClass;
541 };
542 
543 template<typename T>
544 T TmplClass<T>::StaticClassVarExpTmplClass;
545 
546 // Export a definition of a template function.
547 // MSC-DAG: define weak_odr dllexport i32 @"\01??$TypeFunTmpl@H@@YAHH@Z"
548 // GNU-DAG: define weak_odr dllexport i32 @_Z11TypeFunTmplIiET_S0_
549 template<typename T>
550 T __declspec(dllexport) TypeFunTmpl(T t) { return t + t; }
551 
552 // Instantiate the exported template class and the exported template function.
553 int useExportedTmplStaticAndFun()
554 {
555   return TmplClass<int>::StaticClassVarExpTmplClass + TypeFunTmpl<int>(10);
556 }
557 
558 template <typename T> struct __declspec(dllexport) U { void foo() {} };
559 struct __declspec(dllexport) V : public U<int> { };
560 // U<int>'s assignment operator is emitted.
561 // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.U* @"\01??4?$U@H@@QAEAAU0@ABU0@@Z"
562 
563 struct __declspec(dllexport) W { virtual void foo(); };
564 void W::foo() {}
565 // Default ctor:
566 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.W* @"\01??0W@@QAE@XZ"
567 // Copy ctor:
568 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.W* @"\01??0W@@QAE@ABU0@@Z"
569 // vftable:
570 // M32-DAG: [[W_VTABLE:@.*]] = private unnamed_addr constant { [2 x i8*] } { [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@")
571 // M32-DAG: @"\01??_7W@@6B@" = dllexport unnamed_addr alias i8*, getelementptr inbounds ({ [2 x i8*] }, { [2 x i8*] }* [[W_VTABLE]], i32 0, i32 0, i32 1)
572 // G32-DAG: @_ZTV1W = dllexport unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI1W to i8*), i8* bitcast (void (%struct.W*)* @_ZN1W3fooEv to i8*)] }
573 
574 struct __declspec(dllexport) X : public virtual W {};
575 // vbtable:
576 // M32-DAG: @"\01??_8X@@7B@" = weak_odr dllexport unnamed_addr constant [2 x i32] [i32 0, i32 4]
577 
578 struct __declspec(dllexport) Y {
579   // Move assignment operator:
580   // MSVC2015-DAG: define weak_odr dllexport {{.+}} @"\01??4Y@@Q{{.+}}@$$Q{{.+}}@@Z"
581   // MSVC2013-DAG: define weak_odr dllexport {{.+}} @"\01??4Y@@Q{{.+}}0@A{{.+}}0@@Z"
582 
583   int x;
584 };
585 
586 struct __declspec(dllexport) Z { virtual ~Z() {} };
587 // The scalar deleting dtor does not get exported:
588 // M32-DAG: define linkonce_odr x86_thiscallcc i8* @"\01??_GZ@@UAEPAXI@Z"
589 
590 
591 // The user-defined dtor does get exported:
592 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??1Z@@UAE@XZ"
593 
594 namespace UseDtorAlias {
595   struct __declspec(dllexport) A { ~A(); };
596   struct __declspec(dllexport) B : A { ~B(); };
597   A::~A() { }
598   B::~B() { }
599   // Emit a alias definition of B's constructor.
600   // M32-DAG: @"\01??1B@UseDtorAlias@@QAE@XZ" = dllexport alias {{.*}} @"\01??1A@UseDtorAlias@@QAE@XZ"
601 }
602 
603 struct __declspec(dllexport) DefaultedCtorsDtors {
604   DefaultedCtorsDtors() = default;
605   // M32MSVC2013-DAG: define weak_odr dllexport x86_thiscallcc %struct.DefaultedCtorsDtors* @"\01??0DefaultedCtorsDtors@@QAE@XZ"
606   ~DefaultedCtorsDtors() = default;
607   // M32MSVC2013-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??1DefaultedCtorsDtors@@QAE@XZ"
608 };
609 
610 // Export defaulted member function definitions declared inside class.
611 struct __declspec(dllexport) ExportDefaultedInclassDefs {
612   ExportDefaultedInclassDefs() = default;
613   // M32VS2013-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QAE@XZ"(%struct.ExportDefaultedInclassDefs* returned %this)
614   // M64VS2013-DAG: define weak_odr dllexport                %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QEAA@XZ"(%struct.ExportDefaultedInclassDefs* returned %this)
615   // M32VS2015-NOT: define weak_odr dllexport x86_thiscallcc %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QAE@XZ"(%struct.ExportDefaultedInclassDefs* returned %this)
616   // M64VS2015-NOT: define weak_odr dllexport                %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QEAA@XZ"(%struct.ExportDefaultedInclassDefs* returned %this)
617 
618   ~ExportDefaultedInclassDefs() = default;
619   // M32VS2013-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??1ExportDefaultedInclassDefs@@QAE@XZ"(%struct.ExportDefaultedInclassDefs* %this)
620   // M64VS2013-DAG: define weak_odr dllexport                void @"\01??1ExportDefaultedInclassDefs@@QEAA@XZ"(%struct.ExportDefaultedInclassDefs* %this)
621   // M32VS2015-NOT: define weak_odr dllexport x86_thiscallcc void @"\01??1ExportDefaultedInclassDefs@@QAE@XZ"(%struct.ExportDefaultedInclassDefs* %this)
622   // M64VS2015-NOT: define weak_odr dllexport                void @"\01??1ExportDefaultedInclassDefs@@QEAA@XZ"(%struct.ExportDefaultedInclassDefs* %this)
623 
624   ExportDefaultedInclassDefs(const ExportDefaultedInclassDefs&) = default;
625   // M32VS2013-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QAE@ABU0@@Z"(%struct.ExportDefaultedInclassDefs* returned %this, %struct.ExportDefaultedInclassDefs* dereferenceable({{[0-9]+}}))
626   // M64VS2013-DAG: define weak_odr dllexport                %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QEAA@AEBU0@@Z"(%struct.ExportDefaultedInclassDefs* returned %this, %struct.ExportDefaultedInclassDefs* dereferenceable({{[0-9]+}}))
627   // M32VS2015-NOT: define weak_odr dllexport x86_thiscallcc %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QAE@ABU0@@Z"(%struct.ExportDefaultedInclassDefs* returned %this, %struct.ExportDefaultedInclassDefs* dereferenceable({{[0-9]+}}))
628   // M64VS2015-NOT: define weak_odr dllexport                %struct.ExportDefaultedInclassDefs* @"\01??0ExportDefaultedInclassDefs@@QEAA@AEBU0@@Z"(%struct.ExportDefaultedInclassDefs* returned %this, %struct.ExportDefaultedInclassDefs* dereferenceable({{[0-9]+}}))
629 
630   ExportDefaultedInclassDefs& operator=(const ExportDefaultedInclassDefs&) = default;
631   // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.ExportDefaultedInclassDefs* @"\01??4ExportDefaultedInclassDefs@@QAEAAU0@ABU0@@Z"(%struct.ExportDefaultedInclassDefs* %this, %struct.ExportDefaultedInclassDefs* dereferenceable({{[0-9]+}}))
632   // M64-DAG: define weak_odr dllexport                dereferenceable({{[0-9]+}}) %struct.ExportDefaultedInclassDefs* @"\01??4ExportDefaultedInclassDefs@@QEAAAEAU0@AEBU0@@Z"(%struct.ExportDefaultedInclassDefs* %this, %struct.ExportDefaultedInclassDefs* dereferenceable({{[0-9]+}}))
633 };
634 
635 namespace ReferencedInlineMethodInNestedClass {
636   struct __declspec(dllexport) S {
637     void foo() {
638       t->bar();
639     }
640     struct T {
641       void bar() {}
642     };
643     T *t;
644   };
645   // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?foo@S@ReferencedInlineMethodInNestedClass@@QAEXXZ"
646   // M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?bar@T@S@ReferencedInlineMethodInNestedClass@@QAEXXZ"
647 }
648 
649 // MS ignores DLL attributes on partial specializations.
650 template <typename T> struct PartiallySpecializedClassTemplate {};
651 template <typename T> struct __declspec(dllexport) PartiallySpecializedClassTemplate<T*> { void f(); };
652 template <typename T> void PartiallySpecializedClassTemplate<T*>::f() {}
653 USEMEMFUNC(PartiallySpecializedClassTemplate<void*>, f);
654 // M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?f@?$PartiallySpecializedClassTemplate@PAX@@QAEXXZ"
655 // G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN33PartiallySpecializedClassTemplateIPvE1fEv
656 
657 // Attributes on explicit specializations are honored.
658 template <typename T> struct ExplicitlySpecializedClassTemplate {};
659 template <> struct __declspec(dllexport) ExplicitlySpecializedClassTemplate<void*> { void f(); };
660 void ExplicitlySpecializedClassTemplate<void*>::f() {}
661 USEMEMFUNC(ExplicitlySpecializedClassTemplate<void*>, f);
662 // M32-DAG: define dllexport x86_thiscallcc void @"\01?f@?$ExplicitlySpecializedClassTemplate@PAX@@QAEXXZ"
663 // G32-DAG: define dllexport x86_thiscallcc void @_ZN34ExplicitlySpecializedClassTemplateIPvE1fEv
664 
665 // MS inherits DLL attributes to partial specializations.
666 template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate {};
667 template <typename T> struct PartiallySpecializedExportedClassTemplate<T*> { void f() {} };
668 USEMEMFUNC(PartiallySpecializedExportedClassTemplate<void*>, f);
669 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PartiallySpecializedExportedClassTemplate@PAX@@QAEXXZ"
670 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN41PartiallySpecializedExportedClassTemplateIPvE1fEv
671 
672 // MS ignores DLL attributes on partial specializations; inheritance still works though.
673 template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate2 {};
674 template <typename T> struct __declspec(dllimport) PartiallySpecializedExportedClassTemplate2<T*> { void f(); };
675 template <typename T> void PartiallySpecializedExportedClassTemplate2<T*>::f() {}
676 USEMEMFUNC(PartiallySpecializedExportedClassTemplate2<void*>, f);
677 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PartiallySpecializedExportedClassTemplate2@PAX@@QAEXXZ"
678 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN42PartiallySpecializedExportedClassTemplate2IPvE1fEv
679 
680 // Attributes on the instantiation take precedence over attributes on the template.
681 template <typename T> struct __declspec(dllimport) ExplicitlyInstantiatedWithDifferentAttr { void f() {} };
682 template struct __declspec(dllexport) ExplicitlyInstantiatedWithDifferentAttr<int>;
683 USEMEMFUNC(ExplicitlyInstantiatedWithDifferentAttr<int>, f);
684 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ExplicitlyInstantiatedWithDifferentAttr@H@@QAEXXZ"
685 
686 // Don't create weak dllexport aliases. (PR21373)
687 struct NonExportedBaseClass {
688   virtual ~NonExportedBaseClass();
689 };
690 NonExportedBaseClass::~NonExportedBaseClass() {}
691 
692 struct __declspec(dllexport) ExportedDerivedClass : NonExportedBaseClass {};
693 // M32-DAG: weak_odr dllexport x86_thiscallcc void @"\01??1ExportedDerivedClass@@UAE@XZ"
694 
695 // Do not assert about generating code for constexpr functions twice during explicit instantiation (PR21718).
696 template <typename T> struct ExplicitInstConstexprMembers {
697   // Copy assignment operator
698   // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable(1) %struct.ExplicitInstConstexprMembers* @"\01??4?$ExplicitInstConstexprMembers@X@@QAEAAU0@ABU0@@Z"
699 
700   constexpr ExplicitInstConstexprMembers() {}
701   // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstConstexprMembers* @"\01??0?$ExplicitInstConstexprMembers@X@@QAE@XZ"
702 
703   ExplicitInstConstexprMembers(const ExplicitInstConstexprMembers&) = default;
704   // M32MSVC2013-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstConstexprMembers* @"\01??0?$ExplicitInstConstexprMembers@X@@QAE@ABU0@@Z"
705 
706   constexpr int f() const { return 42; }
707   // M32-DAG: define weak_odr dllexport x86_thiscallcc i32 @"\01?f@?$ExplicitInstConstexprMembers@X@@QBEHXZ"
708 };
709 template struct __declspec(dllexport) ExplicitInstConstexprMembers<void>;
710 
711 template <typename T> struct ExplicitInstantiationDeclTemplate { void f() {} };
712 extern template struct __declspec(dllexport) ExplicitInstantiationDeclTemplate<int>;
713 USEMEMFUNC(ExplicitInstantiationDeclTemplate<int>, f);
714 // M32-DAG: {{declare|define available_externally}} x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclTemplate@H@@QAEXXZ"
715 
716 template <typename T> struct __declspec(dllexport) ExplicitInstantiationDeclExportedTemplate { void f() {} };
717 extern template struct ExplicitInstantiationDeclExportedTemplate<int>;
718 USEMEMFUNC(ExplicitInstantiationDeclExportedTemplate<int>, f);
719 // M32-DAG: {{declare|define available_externally}} x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclExportedTemplate@H@@QAEXXZ"
720 
721 template <typename T> struct ExplicitInstantiationDeclExportedDefTemplate { void f() {} ExplicitInstantiationDeclExportedDefTemplate() {} };
722 extern template struct ExplicitInstantiationDeclExportedDefTemplate<int>;
723 template struct __declspec(dllexport) ExplicitInstantiationDeclExportedDefTemplate<int>;
724 USEMEMFUNC(ExplicitInstantiationDeclExportedDefTemplate<int>, f);
725 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclExportedDefTemplate@H@@QAEXXZ"
726 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstantiationDeclExportedDefTemplate* @"\01??0?$ExplicitInstantiationDeclExportedDefTemplate@H@@QAE@XZ"
727 // G32-DAG: define weak_odr x86_thiscallcc void @_ZN44ExplicitInstantiationDeclExportedDefTemplateIiE1fEv
728 
729 template <typename T> struct ImplicitInstantiationExportedExplicitInstantiationDefTemplate { virtual void f() {} };
730 ImplicitInstantiationExportedExplicitInstantiationDefTemplate<int> ImplicitInstantiationExportedExplicitInstantiationDefTemplateInstance;
731 template struct __declspec(dllexport) ImplicitInstantiationExportedExplicitInstantiationDefTemplate<int>;
732 USEMEMFUNC(ImplicitInstantiationExportedExplicitInstantiationDefTemplate<int>, f);
733 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ImplicitInstantiationExportedExplicitInstantiationDefTemplate@H@@UAEXXZ"
734 // G32-DAG: define weak_odr x86_thiscallcc void @_ZN61ImplicitInstantiationExportedExplicitInstantiationDefTemplateIiE1fEv
735 
736 template <typename T> struct __declspec(dllexport) ImplicitInstantiationExplicitInstantiationDefExportedTemplate { virtual void f() {} };
737 ImplicitInstantiationExplicitInstantiationDefExportedTemplate<int> ImplicitInstantiationExplicitInstantiationDefExportedTemplateInstance;
738 template struct ImplicitInstantiationExplicitInstantiationDefExportedTemplate<int>;
739 USEMEMFUNC(ImplicitInstantiationExplicitInstantiationDefExportedTemplate<int>, f);
740 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ImplicitInstantiationExplicitInstantiationDefExportedTemplate@H@@UAEXXZ"
741 // G32-DAG: define weak_odr x86_thiscallcc void @_ZN61ImplicitInstantiationExplicitInstantiationDefExportedTemplateIiE1fEv
742 
743 template <typename T> struct __declspec(dllexport) ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate { virtual void f() {} };
744 ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate<int> ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplateInstance;
745 template struct __declspec(dllexport) ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate<int>;
746 USEMEMFUNC(ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate<int>, f);
747 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplate@H@@UAEXXZ"
748 // G32-DAG: define weak_odr x86_thiscallcc void @_ZN69ImplicitInstantiationExportedExplicitInstantiationDefExportedTemplateIiE1fEv
749 
750 namespace { struct InternalLinkageType {}; }
751 struct __declspec(dllexport) PR23308 {
752   void f(InternalLinkageType*);
753 };
754 void PR23308::f(InternalLinkageType*) {}
755 long use(PR23308* p) { p->f(nullptr); }
756 // M32-DAG: define internal x86_thiscallcc void @"\01?f@PR23308@@QAEXPAUInternalLinkageType@?A@@@Z"
757 
758 template <typename T> struct PR23770BaseTemplate { void f() {} };
759 template <typename T> struct PR23770DerivedTemplate : PR23770BaseTemplate<int> {};
760 extern template struct PR23770DerivedTemplate<int>;
761 template struct __declspec(dllexport) PR23770DerivedTemplate<int>;
762 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PR23770BaseTemplate@H@@QAEXXZ"
763 
764 namespace InClassInits {
765 
766 struct __declspec(dllexport) S {
767   int x = 42;
768 };
769 // M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::S"* @"\01??0S@InClassInits@@QAE@XZ"
770 
771 // dllexport an already instantiated class template.
772 template <typename T> struct Base {
773   int x = 42;
774 };
775 Base<int> base;
776 struct __declspec(dllexport) T : Base<int> { };
777 // M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::Base"* @"\01??0?$Base@H@InClassInits@@QAE@XZ"
778 
779 struct A { A(int); };
780 struct __declspec(dllexport) U {
781   // Class with both default constructor closure and in-class initializer.
782   U(A = 0) {}
783   int x = 0;
784 };
785 // M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::U"* @"\01??0U@InClassInits@@QAE@UA@1@@Z"
786 
787 struct Evil {
788   template <typename T> struct Base {
789     int x = 0;
790   };
791   struct S : Base<int> {};
792   // The already instantiated Base<int> becomes dllexported below, but the
793   // in-class initializer for Base<>::x still hasn't been parsed, so emitting
794   // the default ctor must still be delayed.
795   struct __declspec(dllexport) T : Base<int> {};
796 };
797 // M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::Evil::Base"* @"\01??0?$Base@H@Evil@InClassInits@@QAE@XZ"
798 
799 template <typename T> struct Foo {};
800 template <typename T> struct Bar {
801   Bar<T> &operator=(Foo<T>) {}
802 };
803 struct __declspec(dllexport) Baz {
804   Bar<int> n;
805 };
806 // After parsing Baz, in ActOnFinishCXXNonNestedClass we would synthesize
807 // Baz's operator=, causing instantiation of Foo<int> after which
808 // ActOnFinishCXXNonNestedClass is called, and we would bite our own tail.
809 // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable(1) %"struct.InClassInits::Baz"* @"\01??4Baz@InClassInits@@QAEAAU01@ABU01@@Z"
810 }
811 
812 // We had an issue where instantiating A would force emission of B's delayed
813 // exported methods.
814 namespace pr26490 {
815 template <typename T> struct A { };
816 struct __declspec(dllexport) B {
817   B(int = 0) {}
818   A<int> m_fn1() {}
819 };
820 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FB@pr26490@@QAEXXZ"
821 }
822 
823 // dllexport trumps dllimport on an explicit instantiation.
824 template <typename T> struct ExplicitInstantiationTwoAttributes { void f() {} };
825 template struct __declspec(dllexport) __declspec(dllimport) ExplicitInstantiationTwoAttributes<int>;
826 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ExplicitInstantiationTwoAttributes@H@@QAEXXZ"
827 
828 namespace pr34849 {
829 // Specializations of exported class template member functions get exported.
830 template <typename> struct __declspec(dllexport) ExportedClassTemplate { void foo(); };
831 template<> void ExportedClassTemplate<int>::foo() {}
832 template struct ExportedClassTemplate<int>;
833 // M32-DAG: define dllexport x86_thiscallcc void @"\01?foo@?$ExportedClassTemplate@H@pr34849@@QAEXXZ"
834 
835 // Specializations of exported class member template functions do not get exported.
836 struct __declspec(dllexport) ExportedClass { template <typename> void bar() ; };
837 template<> void ExportedClass::bar<int>() {}
838 // M32-DAG: define x86_thiscallcc void @"\01??$bar@H@ExportedClass@pr34849@@QAEXXZ"
839 template <typename> struct __declspec(dllexport) ExportedClassTemplate2 { template <typename> void baz(); };
840 template<> template<> void ExportedClassTemplate2<int>::baz<int>() {}
841 // M32-DAG: define x86_thiscallcc void @"\01??$baz@H@?$ExportedClassTemplate2@H@pr34849@@QAEXXZ"
842 }
843 
844 //===----------------------------------------------------------------------===//
845 // Classes with template base classes
846 //===----------------------------------------------------------------------===//
847 
848 template <typename T> struct ClassTemplate { void func(); };
849 template <typename T> void ClassTemplate<T>::func() {}
850 template <typename T> struct __declspec(dllexport) ExportedClassTemplate { void func(); };
851 template <typename T> void ExportedClassTemplate<T>::func() {}
852 template <typename T> struct __declspec(dllimport) ImportedClassTemplate { void func(); };
853 template <typename T> void ImportedClassTemplate<T>::func() {}
854 
855 template <typename T> struct ExplicitlySpecializedTemplate { void func() {} };
856 template <> struct ExplicitlySpecializedTemplate<int> { void func(); };
857 void ExplicitlySpecializedTemplate<int>::func() {}
858 template <typename T> struct ExplicitlyExportSpecializedTemplate { void func() {} };
859 template <> struct __declspec(dllexport) ExplicitlyExportSpecializedTemplate<int> { void func(); };
860 void ExplicitlyExportSpecializedTemplate<int>::func() {}
861 template <typename T> struct ExplicitlyImportSpecializedTemplate { void func(); };
862 template <> struct __declspec(dllimport) ExplicitlyImportSpecializedTemplate<int> { void func(); };
863 
864 template <typename T> struct ExplicitlyInstantiatedTemplate { void func(); };
865 template <typename T> void ExplicitlyInstantiatedTemplate<T>::func() {}
866 template struct ExplicitlyInstantiatedTemplate<int>;
867 template <typename T> struct ExplicitlyExportInstantiatedTemplate { void func(); };
868 template <typename T> void ExplicitlyExportInstantiatedTemplate<T>::func() {}
869 template struct __declspec(dllexport) ExplicitlyExportInstantiatedTemplate<int>;
870 template <typename T> struct ExplicitlyImportInstantiatedTemplate { void func(); };
871 template struct __declspec(dllimport) ExplicitlyImportInstantiatedTemplate<int>;
872 
873 
874 // MS: ClassTemplate<int> gets exported.
875 struct __declspec(dllexport) DerivedFromTemplate : public ClassTemplate<int> {};
876 USEMEMFUNC(DerivedFromTemplate, func)
877 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ClassTemplate@H@@QAEXXZ"
878 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIiE4funcEv
879 
880 // ExportedTemplate is explicitly exported.
881 struct __declspec(dllexport) DerivedFromExportedTemplate : public ExportedClassTemplate<int> {};
882 USEMEMFUNC(DerivedFromExportedTemplate, func)
883 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExportedClassTemplate@H@@QAEXXZ"
884 // G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN21ExportedClassTemplateIiE4funcEv
885 
886 // ImportedClassTemplate is explicitly imported.
887 struct __declspec(dllexport) DerivedFromImportedTemplate : public ImportedClassTemplate<int> {};
888 USEMEMFUNC(DerivedFromImportedTemplate, func)
889 // M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ImportedClassTemplate@H@@QAEXXZ"
890 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN21ImportedClassTemplateIiE4funcEv
891 
892 // Base class already implicitly instantiated without dll attribute.
893 struct DerivedFromTemplateD : public ClassTemplate<double> {};
894 struct __declspec(dllexport) DerivedFromTemplateD2 : public ClassTemplate<double> {};
895 USEMEMFUNC(DerivedFromTemplateD2, func)
896 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ClassTemplate@N@@QAEXXZ"
897 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIdE4funcEv
898 
899 // MS: Base class already instantiated with different dll attribute.
900 struct __declspec(dllimport) DerivedFromTemplateB : public ClassTemplate<bool> {};
901 struct __declspec(dllexport) DerivedFromTemplateB2 : public ClassTemplate<bool> {};
902 USEMEMFUNC(DerivedFromTemplateB2, func)
903 // M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ClassTemplate@_N@@QAEXXZ"
904 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIbE4funcEv
905 
906 // Base class already specialized without dll attribute.
907 struct __declspec(dllexport) DerivedFromExplicitlySpecializedTemplate : public ExplicitlySpecializedTemplate<int> {};
908 USEMEMFUNC(DerivedFromExplicitlySpecializedTemplate, func)
909 // M32-DAG: define x86_thiscallcc void @"\01?func@?$ExplicitlySpecializedTemplate@H@@QAEXXZ"
910 // G32-DAG: define x86_thiscallcc void @_ZN29ExplicitlySpecializedTemplateIiE4funcEv
911 
912 // Base class alredy specialized with export attribute.
913 struct __declspec(dllexport) DerivedFromExplicitlyExportSpecializedTemplate : public ExplicitlyExportSpecializedTemplate<int> {};
914 USEMEMFUNC(DerivedFromExplicitlyExportSpecializedTemplate, func)
915 // M32-DAG: define dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportSpecializedTemplate@H@@QAEXXZ"
916 // G32-DAG: define dllexport x86_thiscallcc void @_ZN35ExplicitlyExportSpecializedTemplateIiE4funcEv
917 
918 // Base class already specialized with import attribute.
919 struct __declspec(dllexport) DerivedFromExplicitlyImportSpecializedTemplate : public ExplicitlyImportSpecializedTemplate<int> {};
920 USEMEMFUNC(DerivedFromExplicitlyImportSpecializedTemplate, func)
921 // M32-DAG: declare dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportSpecializedTemplate@H@@QAEXXZ"
922 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN35ExplicitlyImportSpecializedTemplateIiE4funcEv
923 
924 // Base class already instantiated without dll attribute.
925 struct __declspec(dllexport) DerivedFromExplicitlyInstantiatedTemplate : public ExplicitlyInstantiatedTemplate<int> {};
926 USEMEMFUNC(DerivedFromExplicitlyInstantiatedTemplate, func)
927 // M32-DAG: define weak_odr x86_thiscallcc void @"\01?func@?$ExplicitlyInstantiatedTemplate@H@@QAEXXZ"
928 // G32-DAG: define weak_odr x86_thiscallcc void @_ZN30ExplicitlyInstantiatedTemplateIiE4funcEv
929 
930 // Base class already instantiated with export attribute.
931 struct __declspec(dllexport) DerivedFromExplicitlyExportInstantiatedTemplate : public ExplicitlyExportInstantiatedTemplate<int> {};
932 USEMEMFUNC(DerivedFromExplicitlyExportInstantiatedTemplate, func)
933 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportInstantiatedTemplate@H@@QAEXXZ"
934 // G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN36ExplicitlyExportInstantiatedTemplateIiE4funcEv
935 
936 // Base class already instantiated with import attribute.
937 struct __declspec(dllexport) DerivedFromExplicitlyImportInstantiatedTemplate : public ExplicitlyImportInstantiatedTemplate<int> {};
938 USEMEMFUNC(DerivedFromExplicitlyImportInstantiatedTemplate, func)
939 // M32-DAG: declare dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportInstantiatedTemplate@H@@QAEXXZ"
940 // G32-DAG: declare dllimport x86_thiscallcc void @_ZN36ExplicitlyImportInstantiatedTemplateIiE4funcEv
941 
942 // MS: A dll attribute propagates through multiple levels of instantiation.
943 template <typename T> struct TopClass { void func() {} };
944 template <typename T> struct MiddleClass : public TopClass<T> { };
945 struct __declspec(dllexport) BottomClass : public MiddleClass<int> { };
946 USEMEMFUNC(BottomClass, func)
947 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$TopClass@H@@QAEXXZ"
948 // G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN8TopClassIiE4funcEv
949 
950 template <typename T> struct ExplicitInstantiationDeclTemplateBase { void func() {} };
951 extern template struct ExplicitInstantiationDeclTemplateBase<int>;
952 struct __declspec(dllexport) DerivedFromExplicitInstantiationDeclTemplateBase : public ExplicitInstantiationDeclTemplateBase<int> {};
953 template struct ExplicitInstantiationDeclTemplateBase<int>;
954 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitInstantiationDeclTemplateBase@H@@QAEXXZ"
955 // G32-DAG: define weak_odr x86_thiscallcc void @_ZN37ExplicitInstantiationDeclTemplateBaseIiE4funcEv
956 
957 // PR26076
958 struct LayerSelectionBound;
959 template <typename> struct Selection {};
960 typedef Selection<LayerSelectionBound> LayerSelection;
961 struct LayerImpl;
962 struct __declspec(dllexport) LayerTreeImpl {
963   struct __declspec(dllexport) ElementLayers {
964     LayerImpl *main = nullptr;
965   };
966   LayerSelection foo;
967 };
968 // M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.LayerTreeImpl::ElementLayers"* @"\01??0ElementLayers@LayerTreeImpl@@QAE@XZ"
969 // M64-DAG: define weak_odr dllexport %"struct.LayerTreeImpl::ElementLayers"* @"\01??0ElementLayers@LayerTreeImpl@@QEAA@XZ"
970 
971 class __declspec(dllexport) ACE_Shared_Object {
972 public:
973   virtual ~ACE_Shared_Object();
974 };
975 class __declspec(dllexport) ACE_Service_Object : public ACE_Shared_Object {};
976 // Implicit move constructor declaration.
977 // MSVC2015-DAG: define weak_odr dllexport {{.+}}ACE_Service_Object@@Q{{.+}}@$$Q
978 // The declarations should not be exported.
979 // MSVC2013-NOT: define weak_odr dllexport {{.+}}ACE_Service_Object@@Q{{.+}}@$$Q
980