1// RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -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 -fno-threadsafe-statics -fms-extensions -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 -fno-threadsafe-statics -fms-extensions -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 -fno-threadsafe-statics -fms-extensions -O0 -o - %s -w | FileCheck --check-prefix=GNU --check-prefix=G64 %s 5 6// Helper structs to make templates more expressive. 7struct ImplicitInst_Exported {}; 8struct ExplicitDecl_Exported {}; 9struct ExplicitInst_Exported {}; 10struct ExplicitSpec_Exported {}; 11struct ExplicitSpec_Def_Exported {}; 12struct ExplicitSpec_InlineDef_Exported {}; 13struct ExplicitSpec_NotExported {}; 14struct 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 50int __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; 56int 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 71namespace 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 77int 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 80int __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. 88inline 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??$VarTmplDef@UExplicitInst_Exported@@@@3HA" 103// GNU-NOT: @_Z10VarTmplDefI21ExplicitInst_ExportedE 104template<typename T> __declspec(dllexport) int VarTmplDef; 105INSTVAR(VarTmplDef<ExplicitInst_Exported>) 106 107// MSC-DAG: @"\01??$VarTmplImplicitDef@UImplicitInst_Exported@@@@3HA" = external dllexport global 108// GNU-DAG: @_Z18VarTmplImplicitDefI21ImplicitInst_ExportedE = external dllexport global 109template<typename T> __declspec(dllexport) int VarTmplImplicitDef; 110USEVAR(VarTmplImplicitDef<ImplicitInst_Exported>) 111 112// Export definition. 113// MSC-DAG: @"\01??$VarTmplInit1@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4 114// GNU-DAG: @_Z12VarTmplInit1I21ExplicitInst_ExportedE = weak_odr dllexport global i32 1, comdat, align 4 115template<typename T> __declspec(dllexport) int VarTmplInit1 = 1; 116INSTVAR(VarTmplInit1<ExplicitInst_Exported>) 117 118// MSC-DAG: @"\01??$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 120template<typename T> int __declspec(dllexport) VarTmplInit2 = 1; 121INSTVAR(VarTmplInit2<ExplicitInst_Exported>) 122 123// Declare, then export definition. 124// MSC-DAG: @"\01??$VarTmplDeclInit@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4 125// GNU-DAG: @_Z15VarTmplDeclInitI21ExplicitInst_ExportedE = weak_odr dllexport global i32 1, comdat, align 4 126template<typename T> __declspec(dllexport) extern int VarTmplDeclInit; 127template<typename T> int VarTmplDeclInit = 1; 128INSTVAR(VarTmplDeclInit<ExplicitInst_Exported>) 129 130// Redeclarations 131// MSC-DAG: @"\01??$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 133template<typename T> __declspec(dllexport) extern int VarTmplRedecl1; 134template<typename T> __declspec(dllexport) int VarTmplRedecl1 = 1; 135INSTVAR(VarTmplRedecl1<ExplicitInst_Exported>) 136 137// MSC-DAG: @"\01??$VarTmplRedecl2@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4 138// GNU-DAG: @_Z14VarTmplRedecl2I21ExplicitInst_ExportedE = weak_odr dllexport global i32 1, comdat, align 4 139template<typename T> __declspec(dllexport) extern int VarTmplRedecl2; 140template<typename T> int VarTmplRedecl2 = 1; 141INSTVAR(VarTmplRedecl2<ExplicitInst_Exported>) 142 143// MSC-DAG: @"\01??$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 145namespace ns { template<typename T> __declspec(dllexport) int ExternalVarTmpl = 1; } 146INSTVAR(ns::ExternalVarTmpl<ExplicitInst_Exported>) 147 148// MSC-DAG: @"\01??$ExternalAutoTypeVarTmpl@UExplicitInst_Exported@@@@3UExternal@@A" = weak_odr dllexport global %struct.External zeroinitializer, comdat, align 4 149// GNU-DAG: @_Z23ExternalAutoTypeVarTmplI21ExplicitInst_ExportedE = weak_odr dllexport global %struct.External zeroinitializer, comdat, align 4 150template<typename T> __declspec(dllexport) auto ExternalAutoTypeVarTmpl = External(); 151template External ExternalAutoTypeVarTmpl<ExplicitInst_Exported>; 152 153 154template<typename T> int VarTmpl = 1; 155template<typename T> __declspec(dllexport) int ExportedVarTmpl = 1; 156 157// Export implicit instantiation of an exported variable template. 158// MSC-DAG: @"\01??$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 160USEVAR(ExportedVarTmpl<ImplicitInst_Exported>) 161 162// Export explicit instantiation declaration of an exported variable template. 163// MSC-DAG: @"\01??$ExportedVarTmpl@UImplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4 164// GNU-DAG: @_Z15ExportedVarTmplI21ExplicitDecl_ExportedE = weak_odr dllexport global i32 1, comdat, align 4 165extern template int ExportedVarTmpl<ExplicitDecl_Exported>; 166 template int ExportedVarTmpl<ExplicitDecl_Exported>; 167 168// Export explicit instantiation definition of an exported variable template. 169// MSC-DAG: @"\01??$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 171template __declspec(dllexport) int ExportedVarTmpl<ExplicitInst_Exported>; 172 173// Export specialization of an exported variable template. 174// MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_Exported@@@@3HA" = dllexport global i32 0, align 4 175// GNU-DAG: @_Z15ExportedVarTmplI21ExplicitSpec_ExportedE = dllexport global i32 0, align 4 176template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Exported>; 177 178// MSC-DAG: @"\01??$ExportedVarTmpl@UExplicitSpec_Def_Exported@@@@3HA" = dllexport global i32 1, align 4 179// GNU-DAG: @_Z15ExportedVarTmplI25ExplicitSpec_Def_ExportedE = dllexport global i32 1, align 4 180template<> __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??$ExportedVarTmpl@UExplicitSpec_NotExported@@@@3HA" = global i32 0, align 4 185// GNU-DAG: @_Z15ExportedVarTmplI24ExplicitSpec_NotExportedE = global i32 0, align 4 186template<> int ExportedVarTmpl<ExplicitSpec_NotExported>; 187 188 189// Export explicit instantiation declaration of a non-exported variable template. 190// MSC-DAG: @"\01??$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 192extern 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??$VarTmpl@UExplicitInst_Exported@@@@3HA" = weak_odr dllexport global i32 1, comdat, align 4 197// GNU-DAG: @_Z7VarTmplI21ExplicitInst_ExportedE = weak_odr dllexport global i32 1, comdat, align 4 198template __declspec(dllexport) int VarTmpl<ExplicitInst_Exported>; 199 200// Export specialization of a non-exported variable template. 201// MSC-DAG: @"\01??$VarTmpl@UExplicitSpec_Exported@@@@3HA" = dllexport global i32 0, align 4 202// GNU-DAG: @_Z7VarTmplI21ExplicitSpec_ExportedE = dllexport global i32 0, align 4 203template<> __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 207template<> __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() 220__declspec(dllexport) void def() {} 221 222// extern "C" 223// MSC-DAG: define dllexport void @externC() 224// GNU-DAG: define dllexport void @externC() 225extern "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() 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(); 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(); 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(); 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(); 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() 258struct FuncFriend { 259 friend __declspec(dllexport) void friend1(); 260 friend __declspec(dllexport) void friend2(); 261}; 262__declspec(dllexport) void friend1() {} 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]}}( 268void* alloc(__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() 273namespace 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() 284template<typename T> __declspec(dllexport) void funcTmplDef() {} 285INST(funcTmplDef<ExplicitInst_Exported>) 286 287// Export inline function template. 288// MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmpl1@UExplicitInst_Exported@@@@YAXXZ"() 289// GNU-DAG: define weak_odr dllexport void @_Z15inlineFuncTmpl1I21ExplicitInst_ExportedEvv() 290template<typename T> __declspec(dllexport) inline void inlineFuncTmpl1() {} 291INST(inlineFuncTmpl1<ExplicitInst_Exported>) 292 293// MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmpl2@UExplicitInst_Exported@@@@YAXXZ"() 294// GNU-DAG: define weak_odr dllexport void @_Z15inlineFuncTmpl2I21ExplicitInst_ExportedEvv() 295template<typename T> inline void __attribute__((dllexport)) inlineFuncTmpl2() {} 296INST(inlineFuncTmpl2<ExplicitInst_Exported>) 297 298// MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmplDecl@UExplicitInst_Exported@@@@YAXXZ"() 299// GNU-DAG: define weak_odr dllexport void @_Z18inlineFuncTmplDeclI21ExplicitInst_ExportedEvv() 300template<typename T> __declspec(dllexport) inline void inlineFuncTmplDecl(); 301template<typename T> void inlineFuncTmplDecl() {} 302INST(inlineFuncTmplDecl<ExplicitInst_Exported>) 303 304// MSC-DAG: define weak_odr dllexport void @"\01??$inlineFuncTmplDef@UExplicitInst_Exported@@@@YAXXZ"() 305// GNU-DAG: define weak_odr dllexport void @_Z17inlineFuncTmplDefI21ExplicitInst_ExportedEvv() 306template<typename T> __declspec(dllexport) void inlineFuncTmplDef(); 307template<typename T> inline void inlineFuncTmplDef() {} 308INST(inlineFuncTmplDef<ExplicitInst_Exported>) 309 310 311// Redeclarations 312// MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl1@UExplicitInst_Exported@@@@YAXXZ"() 313// GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl1I21ExplicitInst_ExportedEvv() 314template<typename T> __declspec(dllexport) void funcTmplRedecl1(); 315template<typename T> __declspec(dllexport) void funcTmplRedecl1() {} 316INST(funcTmplRedecl1<ExplicitInst_Exported>) 317 318// MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl2@UExplicitInst_Exported@@@@YAXXZ"() 319// GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl2I21ExplicitInst_ExportedEvv() 320template<typename T> __declspec(dllexport) void funcTmplRedecl2(); 321template<typename T> void funcTmplRedecl2() {} 322INST(funcTmplRedecl2<ExplicitInst_Exported>) 323 324// MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplRedecl3@UExplicitInst_Exported@@@@YAXXZ"() 325// GNU-DAG: define weak_odr dllexport void @_Z15funcTmplRedecl3I21ExplicitInst_ExportedEvv() 326template<typename T> __declspec(dllexport) void funcTmplRedecl3(); 327template<typename T> void funcTmplRedecl3() {} 328INST(funcTmplRedecl3<ExplicitInst_Exported>) 329 330 331// Function template friends 332// MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplFriend1@UExplicitInst_Exported@@@@YAXXZ"() 333// GNU-DAG: define weak_odr dllexport void @_Z15funcTmplFriend1I21ExplicitInst_ExportedEvv() 334// MSC-DAG: define weak_odr dllexport void @"\01??$funcTmplFriend2@UExplicitInst_Exported@@@@YAXXZ"() 335// GNU-DAG: define weak_odr dllexport void @_Z15funcTmplFriend2I21ExplicitInst_ExportedEvv() 336struct FuncTmplFriend { 337 template<typename T> friend __declspec(dllexport) void funcTmplFriend1(); 338 template<typename T> friend __declspec(dllexport) void funcTmplFriend2(); 339}; 340template<typename T> __declspec(dllexport) void funcTmplFriend1() {} 341template<typename T> void funcTmplFriend2() {} 342INST(funcTmplFriend1<ExplicitInst_Exported>) 343INST(funcTmplFriend2<ExplicitInst_Exported>) 344 345// MSC-DAG: define weak_odr dllexport void @"\01??$externalFuncTmpl@UExplicitInst_Exported@@@ns@@YAXXZ"() 346// GNU-DAG: define weak_odr dllexport void @_ZN2ns16externalFuncTmplI21ExplicitInst_ExportedEEvv() 347namespace ns { template<typename T> __declspec(dllexport) void externalFuncTmpl() {} } 348INST(ns::externalFuncTmpl<ExplicitInst_Exported>) 349 350 351template<typename T> void funcTmpl() {} 352template<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??$exportedFuncTmpl@UImplicitInst_Exported@@@@YAXXZ"() 356// GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ImplicitInst_ExportedEvv() 357USE(exportedFuncTmpl<ImplicitInst_Exported>) 358 359// Export explicit instantiation declaration of an exported function template. 360// MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitDecl_Exported@@@@YAXXZ"() 361// GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ExplicitDecl_ExportedEvv() 362extern 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??$exportedFuncTmpl@UExplicitInst_Exported@@@@YAXXZ"() 367// GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI21ExplicitInst_ExportedEvv() 368template void exportedFuncTmpl<ExplicitInst_Exported>(); 369 370// Export specialization of an exported function template. 371// MSC-DAG: define dllexport void @"\01??$exportedFuncTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"() 372// GNU-DAG: define dllexport void @_Z16exportedFuncTmplI25ExplicitSpec_Def_ExportedEvv() 373template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Def_Exported>() {} 374 375// MSC-DAG: define weak_odr dllexport void @"\01??$exportedFuncTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"() 376// GNU-DAG: define weak_odr dllexport void @_Z16exportedFuncTmplI31ExplicitSpec_InlineDef_ExportedEvv() 377template<> __declspec(dllexport) inline void exportedFuncTmpl<ExplicitSpec_InlineDef_Exported>() {} 378 379// Not exporting specialization of an exported function template without 380// explicit dllexport. 381// MSC-DAG: define void @"\01??$exportedFuncTmpl@UExplicitSpec_NotExported@@@@YAXXZ"() 382// GNU-DAG: define void @_Z16exportedFuncTmplI24ExplicitSpec_NotExportedEvv() 383template<> 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??$funcTmpl@UExplicitDecl_Exported@@@@YAXXZ"() 388// GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI21ExplicitDecl_ExportedEvv() 389extern template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>(); 390 template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>(); 391 392// Export explicit instantiation definition of a non-exported function template. 393// MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitInst_Exported@@@@YAXXZ"() 394// GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI21ExplicitInst_ExportedEvv() 395template __declspec(dllexport) void funcTmpl<ExplicitInst_Exported>(); 396 397// Export specialization of a non-exported function template. 398// MSC-DAG: define dllexport void @"\01??$funcTmpl@UExplicitSpec_Def_Exported@@@@YAXXZ"() 399// GNU-DAG: define dllexport void @_Z8funcTmplI25ExplicitSpec_Def_ExportedEvv() 400template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Def_Exported>() {} 401 402// MSC-DAG: define weak_odr dllexport void @"\01??$funcTmpl@UExplicitSpec_InlineDef_Exported@@@@YAXXZ"() 403// GNU-DAG: define weak_odr dllexport void @_Z8funcTmplI31ExplicitSpec_InlineDef_ExportedEvv() 404template<> __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() 451void __attribute__((dllimport, dllexport)) precedence1A() {} 452void __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() 458void __attribute__((dllexport, dllimport)) precedence2A() {} 459void __declspec(dllexport) __declspec(dllimport) precedence2B() {} 460 461// MSC-DAG: define dllexport void @"\01?precedenceRedecl1@@YAXXZ" 462// GNU-DAG: define dllexport void @_Z17precedenceRedecl1v() 463void __declspec(dllimport) precedenceRedecl1(); 464void __declspec(dllexport) precedenceRedecl1() {} 465 466// MSC-DAG: define dllexport void @"\01?precedenceRedecl2@@YAXXZ" 467// GNU-DAG: define dllexport void @_Z17precedenceRedecl2v() 468void __declspec(dllexport) precedenceRedecl2(); 469void __declspec(dllimport) precedenceRedecl2() {} 470 471 472 473//===----------------------------------------------------------------------===// 474// Classes 475//===----------------------------------------------------------------------===// 476 477struct S { 478 void __declspec(dllexport) a() {} 479 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@S@@QAEXXZ" 480 481 struct T { 482 void __declspec(dllexport) a() {} 483 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@T@S@@QAEXXZ" 484 }; 485}; 486 487struct CtorWithClosure { 488 __declspec(dllexport) CtorWithClosure(...) {} 489// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FCtorWithClosure@@QAEXXZ"({{.*}}) comdat 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 503struct __declspec(dllexport) ClassWithClosure { 504 DELETE_IMPLICIT_MEMBERS(ClassWithClosure); 505 ClassWithClosure(...) {} 506// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FClassWithClosure@@QAEXXZ"({{.*}}) comdat 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 514struct __declspec(dllexport) NestedOuter { 515 DELETE_IMPLICIT_MEMBERS(NestedOuter); 516 NestedOuter(void *p = 0) {} 517 struct __declspec(dllexport) NestedInner { 518 DELETE_IMPLICIT_MEMBERS(NestedInner); 519 NestedInner(void *p = 0) {} 520 }; 521}; 522 523// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FNestedOuter@@QAEXXZ"({{.*}}) comdat 524// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FNestedInner@NestedOuter@@QAEXXZ"({{.*}}) comdat 525 526template <typename T> 527struct SomeTemplate { 528 SomeTemplate(T o = T()) : o(o) {} 529 T o; 530}; 531struct __declspec(dllexport) InheritFromTemplate : SomeTemplate<int> {}; 532 533// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_F?$SomeTemplate@H@@QAEXXZ"({{.*}}) comdat 534 535namespace PR23801 { 536template <typename> 537struct S { 538 ~S() {} 539}; 540struct A { 541 A(int); 542 S<int> s; 543}; 544struct __declspec(dllexport) B { 545 B(A = 0) {} 546}; 547 548} 549// 550// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??_FB@PR23801@@QAEXXZ"({{.*}}) comdat 551 552struct __declspec(dllexport) T { 553 // Copy assignment operator: 554 // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.T* @"\01??4T@@QAEAAU0@ABU0@@Z" 555 556 // Explicitly defaulted copy constructur: 557 T(const T&) = default; 558 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.T* @"\01??0T@@QAE@ABU0@@Z" 559 560 void a() {} 561 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@T@@QAEXXZ" 562 563 static int b; 564 // M32-DAG: @"\01?b@T@@2HA" = external dllexport global i32 565 566 static int c; 567 // M32-DAG: @"\01?c@T@@2HA" = dllexport global i32 0, align 4 568}; 569 570USEVAR(T::b) 571int T::c; 572 573template <typename T> struct __declspec(dllexport) U { void foo() {} }; 574struct __declspec(dllexport) V : public U<int> { }; 575// U<int>'s assignment operator is emitted. 576// M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.U* @"\01??4?$U@H@@QAEAAU0@ABU0@@Z" 577 578struct __declspec(dllexport) W { virtual void foo(); }; 579void W::foo() {} 580// Default ctor: 581// M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.W* @"\01??0W@@QAE@XZ" 582// Copy ctor: 583// M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.W* @"\01??0W@@QAE@ABU0@@Z" 584// vftable: 585// 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@") 586// M32-DAG: @"\01??_7W@@6B@" = dllexport unnamed_addr alias i8*, getelementptr inbounds ([2 x i8*], [2 x i8*]* [[W_VTABLE]], i32 0, i32 1) 587// 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*)] 588 589struct __declspec(dllexport) X : public virtual W {}; 590// vbtable: 591// M32-DAG: @"\01??_8X@@7B@" = weak_odr dllexport unnamed_addr constant [2 x i32] [i32 0, i32 4] 592 593struct __declspec(dllexport) Y { 594 // Move assignment operator: 595 // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.Y* @"\01??4Y@@QAEAAU0@$$QAU0@@Z" 596 597 int x; 598}; 599 600struct __declspec(dllexport) Z { virtual ~Z() {} }; 601// The scalar deleting dtor does not get exported: 602// M32-DAG: define linkonce_odr x86_thiscallcc i8* @"\01??_GZ@@UAEPAXI@Z" 603 604 605// The user-defined dtor does get exported: 606// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??1Z@@UAE@XZ" 607 608namespace UseDtorAlias { 609 struct __declspec(dllexport) A { ~A(); }; 610 struct __declspec(dllexport) B : A { ~B(); }; 611 A::~A() { } 612 B::~B() { } 613 // Emit a alias definition of B's constructor. 614 // M32-DAG: @"\01??1B@UseDtorAlias@@QAE@XZ" = dllexport alias {{.*}} @"\01??1A@UseDtorAlias@@QAE@XZ" 615} 616 617struct __declspec(dllexport) DefaultedCtorsDtors { 618 DefaultedCtorsDtors() = default; 619 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.DefaultedCtorsDtors* @"\01??0DefaultedCtorsDtors@@QAE@XZ" 620 ~DefaultedCtorsDtors() = default; 621 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01??1DefaultedCtorsDtors@@QAE@XZ" 622}; 623 624namespace ReferencedInlineMethodInNestedClass { 625 struct __declspec(dllexport) S { 626 void foo() { 627 t->bar(); 628 } 629 struct T { 630 void bar() {} 631 }; 632 T *t; 633 }; 634 // M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?foo@S@ReferencedInlineMethodInNestedClass@@QAEXXZ" 635 // M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?bar@T@S@ReferencedInlineMethodInNestedClass@@QAEXXZ" 636} 637 638// MS ignores DLL attributes on partial specializations. 639template <typename T> struct PartiallySpecializedClassTemplate {}; 640template <typename T> struct __declspec(dllexport) PartiallySpecializedClassTemplate<T*> { void f(); }; 641template <typename T> void PartiallySpecializedClassTemplate<T*>::f() {} 642USEMEMFUNC(PartiallySpecializedClassTemplate<void*>, f); 643// M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?f@?$PartiallySpecializedClassTemplate@PAX@@QAEXXZ" 644// G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN33PartiallySpecializedClassTemplateIPvE1fEv 645 646// Attributes on explicit specializations are honored. 647template <typename T> struct ExplicitlySpecializedClassTemplate {}; 648template <> struct __declspec(dllexport) ExplicitlySpecializedClassTemplate<void*> { void f(); }; 649void ExplicitlySpecializedClassTemplate<void*>::f() {} 650USEMEMFUNC(ExplicitlySpecializedClassTemplate<void*>, f); 651// M32-DAG: define dllexport x86_thiscallcc void @"\01?f@?$ExplicitlySpecializedClassTemplate@PAX@@QAEXXZ" 652// G32-DAG: define dllexport x86_thiscallcc void @_ZN34ExplicitlySpecializedClassTemplateIPvE1fEv 653 654// MS inherits DLL attributes to partial specializations. 655template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate {}; 656template <typename T> struct PartiallySpecializedExportedClassTemplate<T*> { void f() {} }; 657USEMEMFUNC(PartiallySpecializedExportedClassTemplate<void*>, f); 658// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PartiallySpecializedExportedClassTemplate@PAX@@QAEXXZ" 659// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN41PartiallySpecializedExportedClassTemplateIPvE1fEv 660 661// MS ignores DLL attributes on partial specializations; inheritance still works though. 662template <typename T> struct __declspec(dllexport) PartiallySpecializedExportedClassTemplate2 {}; 663template <typename T> struct __declspec(dllimport) PartiallySpecializedExportedClassTemplate2<T*> { void f(); }; 664template <typename T> void PartiallySpecializedExportedClassTemplate2<T*>::f() {} 665USEMEMFUNC(PartiallySpecializedExportedClassTemplate2<void*>, f); 666// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PartiallySpecializedExportedClassTemplate2@PAX@@QAEXXZ" 667// G32-DAG: declare dllimport x86_thiscallcc void @_ZN42PartiallySpecializedExportedClassTemplate2IPvE1fEv 668 669// Attributes on the instantiation take precedence over attributes on the template. 670template <typename T> struct __declspec(dllimport) ExplicitlyInstantiatedWithDifferentAttr { void f() {} }; 671template struct __declspec(dllexport) ExplicitlyInstantiatedWithDifferentAttr<int>; 672USEMEMFUNC(ExplicitlyInstantiatedWithDifferentAttr<int>, f); 673// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ExplicitlyInstantiatedWithDifferentAttr@H@@QAEXXZ" 674 675// Don't create weak dllexport aliases. (PR21373) 676struct NonExportedBaseClass { 677 virtual ~NonExportedBaseClass(); 678}; 679NonExportedBaseClass::~NonExportedBaseClass() {} 680 681struct __declspec(dllexport) ExportedDerivedClass : NonExportedBaseClass {}; 682// M32-DAG: weak_odr dllexport x86_thiscallcc void @"\01??1ExportedDerivedClass@@UAE@XZ" 683 684// Do not assert about generating code for constexpr functions twice during explicit instantiation (PR21718). 685template <typename T> struct ExplicitInstConstexprMembers { 686 // Copy assignment operator 687 // M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable(1) %struct.ExplicitInstConstexprMembers* @"\01??4?$ExplicitInstConstexprMembers@X@@QAEAAU0@ABU0@@Z" 688 689 constexpr ExplicitInstConstexprMembers() {} 690 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstConstexprMembers* @"\01??0?$ExplicitInstConstexprMembers@X@@QAE@XZ" 691 692 ExplicitInstConstexprMembers(const ExplicitInstConstexprMembers&) = default; 693 // M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstConstexprMembers* @"\01??0?$ExplicitInstConstexprMembers@X@@QAE@ABU0@@Z" 694 695 constexpr int f() const { return 42; } 696 // M32-DAG: define weak_odr dllexport x86_thiscallcc i32 @"\01?f@?$ExplicitInstConstexprMembers@X@@QBEHXZ" 697}; 698template struct __declspec(dllexport) ExplicitInstConstexprMembers<void>; 699 700template <typename T> struct ExplicitInstantiationDeclTemplate { void f() {} }; 701extern template struct __declspec(dllexport) ExplicitInstantiationDeclTemplate<int>; 702USEMEMFUNC(ExplicitInstantiationDeclTemplate<int>, f); 703// M32-DAG: {{declare|define available_externally}} x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclTemplate@H@@QAEXXZ" 704 705template <typename T> struct __declspec(dllexport) ExplicitInstantiationDeclExportedTemplate { void f() {} }; 706extern template struct ExplicitInstantiationDeclExportedTemplate<int>; 707USEMEMFUNC(ExplicitInstantiationDeclExportedTemplate<int>, f); 708// M32-DAG: {{declare|define available_externally}} x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclExportedTemplate@H@@QAEXXZ" 709 710template <typename T> struct ExplicitInstantiationDeclExportedDefTemplate { void f() {} ExplicitInstantiationDeclExportedDefTemplate() {} }; 711extern template struct ExplicitInstantiationDeclExportedDefTemplate<int>; 712template struct __declspec(dllexport) ExplicitInstantiationDeclExportedDefTemplate<int>; 713USEMEMFUNC(ExplicitInstantiationDeclExportedDefTemplate<int>, f); 714// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$ExplicitInstantiationDeclExportedDefTemplate@H@@QAEXXZ" 715// M32-DAG: define weak_odr dllexport x86_thiscallcc %struct.ExplicitInstantiationDeclExportedDefTemplate* @"\01??0?$ExplicitInstantiationDeclExportedDefTemplate@H@@QAE@XZ" 716// G32-DAG: define weak_odr x86_thiscallcc void @_ZN44ExplicitInstantiationDeclExportedDefTemplateIiE1fEv 717 718namespace { struct InternalLinkageType {}; } 719struct __declspec(dllexport) PR23308 { 720 void f(InternalLinkageType*); 721}; 722void PR23308::f(InternalLinkageType*) {} 723long use(PR23308* p) { p->f(nullptr); } 724// M32-DAG: define internal x86_thiscallcc void @"\01?f@PR23308@@QAEXPAUInternalLinkageType@?A@@@Z" 725 726template <typename T> struct PR23770BaseTemplate { void f() {} }; 727template <typename T> struct PR23770DerivedTemplate : PR23770BaseTemplate<int> {}; 728extern template struct PR23770DerivedTemplate<int>; 729template struct __declspec(dllexport) PR23770DerivedTemplate<int>; 730// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?f@?$PR23770BaseTemplate@H@@QAEXXZ" 731 732namespace InClassInits { 733 734struct __declspec(dllexport) S { 735 int x = 42; 736}; 737// M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::S"* @"\01??0S@InClassInits@@QAE@XZ" 738 739// dllexport an already instantiated class template. 740template <typename T> struct Base { 741 int x = 42; 742}; 743Base<int> base; 744struct __declspec(dllexport) T : Base<int> { }; 745// M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::Base"* @"\01??0?$Base@H@InClassInits@@QAE@XZ" 746 747struct A { A(int); }; 748struct __declspec(dllexport) U { 749 // Class with both default constructor closure and in-class initializer. 750 U(A = 0) {} 751 int x = 0; 752}; 753// M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::U"* @"\01??0U@InClassInits@@QAE@UA@1@@Z" 754 755struct Evil { 756 template <typename T> struct Base { 757 int x = 0; 758 }; 759 struct S : Base<int> {}; 760 // The already instantiated Base<int> becomes dllexported below, but the 761 // in-class initializer for Base<>::x still hasn't been parsed, so emitting 762 // the default ctor must still be delayed. 763 struct __declspec(dllexport) T : Base<int> {}; 764}; 765// M32-DAG: define weak_odr dllexport x86_thiscallcc %"struct.InClassInits::Evil::Base"* @"\01??0?$Base@H@Evil@InClassInits@@QAE@XZ" 766 767template <typename T> struct Foo {}; 768template <typename T> struct Bar { 769 Bar<T> &operator=(Foo<T>) {} 770}; 771struct __declspec(dllexport) Baz { 772 Bar<int> n; 773}; 774// After parsing Baz, in ActOnFinishCXXNonNestedClass we would synthesize 775// Baz's operator=, causing instantiation of Foo<int> after which 776// ActOnFinishCXXNonNestedClass is called, and we would bite our own tail. 777// M32-DAG: define weak_odr dllexport x86_thiscallcc dereferenceable(1) %"struct.InClassInits::Baz"* @"\01??4Baz@InClassInits@@QAEAAU01@ABU01@@Z" 778} 779 780 781//===----------------------------------------------------------------------===// 782// Classes with template base classes 783//===----------------------------------------------------------------------===// 784 785template <typename T> struct ClassTemplate { void func(); }; 786template <typename T> void ClassTemplate<T>::func() {} 787template <typename T> struct __declspec(dllexport) ExportedClassTemplate { void func(); }; 788template <typename T> void ExportedClassTemplate<T>::func() {} 789template <typename T> struct __declspec(dllimport) ImportedClassTemplate { void func(); }; 790template <typename T> void ImportedClassTemplate<T>::func() {} 791 792template <typename T> struct ExplicitlySpecializedTemplate { void func() {} }; 793template <> struct ExplicitlySpecializedTemplate<int> { void func(); }; 794void ExplicitlySpecializedTemplate<int>::func() {} 795template <typename T> struct ExplicitlyExportSpecializedTemplate { void func() {} }; 796template <> struct __declspec(dllexport) ExplicitlyExportSpecializedTemplate<int> { void func(); }; 797void ExplicitlyExportSpecializedTemplate<int>::func() {} 798template <typename T> struct ExplicitlyImportSpecializedTemplate { void func(); }; 799template <> struct __declspec(dllimport) ExplicitlyImportSpecializedTemplate<int> { void func(); }; 800 801template <typename T> struct ExplicitlyInstantiatedTemplate { void func(); }; 802template <typename T> void ExplicitlyInstantiatedTemplate<T>::func() {} 803template struct ExplicitlyInstantiatedTemplate<int>; 804template <typename T> struct ExplicitlyExportInstantiatedTemplate { void func(); }; 805template <typename T> void ExplicitlyExportInstantiatedTemplate<T>::func() {} 806template struct __declspec(dllexport) ExplicitlyExportInstantiatedTemplate<int>; 807template <typename T> struct ExplicitlyImportInstantiatedTemplate { void func(); }; 808template struct __declspec(dllimport) ExplicitlyImportInstantiatedTemplate<int>; 809 810 811// MS: ClassTemplate<int> gets exported. 812struct __declspec(dllexport) DerivedFromTemplate : public ClassTemplate<int> {}; 813USEMEMFUNC(DerivedFromTemplate, func) 814// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ClassTemplate@H@@QAEXXZ" 815// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIiE4funcEv 816 817// ExportedTemplate is explicitly exported. 818struct __declspec(dllexport) DerivedFromExportedTemplate : public ExportedClassTemplate<int> {}; 819USEMEMFUNC(DerivedFromExportedTemplate, func) 820// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExportedClassTemplate@H@@QAEXXZ" 821// G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN21ExportedClassTemplateIiE4funcEv 822 823// ImportedClassTemplate is explicitly imported. 824struct __declspec(dllexport) DerivedFromImportedTemplate : public ImportedClassTemplate<int> {}; 825USEMEMFUNC(DerivedFromImportedTemplate, func) 826// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ImportedClassTemplate@H@@QAEXXZ" 827// G32-DAG: declare dllimport x86_thiscallcc void @_ZN21ImportedClassTemplateIiE4funcEv 828 829// Base class already implicitly instantiated without dll attribute. 830struct DerivedFromTemplateD : public ClassTemplate<double> {}; 831struct __declspec(dllexport) DerivedFromTemplateD2 : public ClassTemplate<double> {}; 832USEMEMFUNC(DerivedFromTemplateD2, func) 833// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ClassTemplate@N@@QAEXXZ" 834// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIdE4funcEv 835 836// MS: Base class already instantiated with different dll attribute. 837struct __declspec(dllimport) DerivedFromTemplateB : public ClassTemplate<bool> {}; 838struct __declspec(dllexport) DerivedFromTemplateB2 : public ClassTemplate<bool> {}; 839USEMEMFUNC(DerivedFromTemplateB2, func) 840// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ClassTemplate@_N@@QAEXXZ" 841// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIbE4funcEv 842 843// Base class already specialized without dll attribute. 844struct __declspec(dllexport) DerivedFromExplicitlySpecializedTemplate : public ExplicitlySpecializedTemplate<int> {}; 845USEMEMFUNC(DerivedFromExplicitlySpecializedTemplate, func) 846// M32-DAG: define x86_thiscallcc void @"\01?func@?$ExplicitlySpecializedTemplate@H@@QAEXXZ" 847// G32-DAG: define x86_thiscallcc void @_ZN29ExplicitlySpecializedTemplateIiE4funcEv 848 849// Base class alredy specialized with export attribute. 850struct __declspec(dllexport) DerivedFromExplicitlyExportSpecializedTemplate : public ExplicitlyExportSpecializedTemplate<int> {}; 851USEMEMFUNC(DerivedFromExplicitlyExportSpecializedTemplate, func) 852// M32-DAG: define dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportSpecializedTemplate@H@@QAEXXZ" 853// G32-DAG: define dllexport x86_thiscallcc void @_ZN35ExplicitlyExportSpecializedTemplateIiE4funcEv 854 855// Base class already specialized with import attribute. 856struct __declspec(dllexport) DerivedFromExplicitlyImportSpecializedTemplate : public ExplicitlyImportSpecializedTemplate<int> {}; 857USEMEMFUNC(DerivedFromExplicitlyImportSpecializedTemplate, func) 858// M32-DAG: declare dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportSpecializedTemplate@H@@QAEXXZ" 859// G32-DAG: declare dllimport x86_thiscallcc void @_ZN35ExplicitlyImportSpecializedTemplateIiE4funcEv 860 861// Base class already instantiated without dll attribute. 862struct __declspec(dllexport) DerivedFromExplicitlyInstantiatedTemplate : public ExplicitlyInstantiatedTemplate<int> {}; 863USEMEMFUNC(DerivedFromExplicitlyInstantiatedTemplate, func) 864// M32-DAG: define weak_odr x86_thiscallcc void @"\01?func@?$ExplicitlyInstantiatedTemplate@H@@QAEXXZ" 865// G32-DAG: define weak_odr x86_thiscallcc void @_ZN30ExplicitlyInstantiatedTemplateIiE4funcEv 866 867// Base class already instantiated with export attribute. 868struct __declspec(dllexport) DerivedFromExplicitlyExportInstantiatedTemplate : public ExplicitlyExportInstantiatedTemplate<int> {}; 869USEMEMFUNC(DerivedFromExplicitlyExportInstantiatedTemplate, func) 870// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportInstantiatedTemplate@H@@QAEXXZ" 871// G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN36ExplicitlyExportInstantiatedTemplateIiE4funcEv 872 873// Base class already instantiated with import attribute. 874struct __declspec(dllexport) DerivedFromExplicitlyImportInstantiatedTemplate : public ExplicitlyImportInstantiatedTemplate<int> {}; 875USEMEMFUNC(DerivedFromExplicitlyImportInstantiatedTemplate, func) 876// M32-DAG: declare dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportInstantiatedTemplate@H@@QAEXXZ" 877// G32-DAG: declare dllimport x86_thiscallcc void @_ZN36ExplicitlyImportInstantiatedTemplateIiE4funcEv 878 879// MS: A dll attribute propagates through multiple levels of instantiation. 880template <typename T> struct TopClass { void func() {} }; 881template <typename T> struct MiddleClass : public TopClass<T> { }; 882struct __declspec(dllexport) BottomClass : public MiddleClass<int> { }; 883USEMEMFUNC(BottomClass, func) 884// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$TopClass@H@@QAEXXZ" 885// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN8TopClassIiE4funcEv 886 887template <typename T> struct ExplicitInstantiationDeclTemplateBase { void func() {} }; 888extern template struct ExplicitInstantiationDeclTemplateBase<int>; 889struct __declspec(dllexport) DerivedFromExplicitInstantiationDeclTemplateBase : public ExplicitInstantiationDeclTemplateBase<int> {}; 890template struct ExplicitInstantiationDeclTemplateBase<int>; 891// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitInstantiationDeclTemplateBase@H@@QAEXXZ" 892// G32-DAG: define weak_odr x86_thiscallcc void @_ZN37ExplicitInstantiationDeclTemplateBaseIiE4funcEv 893 894template <typename T> struct ExplicitInstantiationDeclTemplateBase2 { void func() {} }; 895extern template struct ExplicitInstantiationDeclTemplateBase2<int>; 896struct __declspec(dllexport) DerivedFromExplicitInstantiationDeclTemplateBase2 : public ExplicitInstantiationDeclTemplateBase2<int> {}; 897template struct __declspec(dllimport) ExplicitInstantiationDeclTemplateBase2<int>; 898USEMEMFUNC(ExplicitInstantiationDeclTemplateBase2<int>, func) 899// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitInstantiationDeclTemplateBase2@H@@QAEXXZ" 900// G32-DAG: define weak_odr x86_thiscallcc void @_ZN38ExplicitInstantiationDeclTemplateBase2IiE4funcEv 901