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Diffstat (limited to 'test/CodeGenCXX/dllimport.cpp')
| -rw-r--r-- | test/CodeGenCXX/dllimport.cpp | 771 |
1 files changed, 771 insertions, 0 deletions
diff --git a/test/CodeGenCXX/dllimport.cpp b/test/CodeGenCXX/dllimport.cpp new file mode 100644 index 000000000000..59f8f6361619 --- /dev/null +++ b/test/CodeGenCXX/dllimport.cpp @@ -0,0 +1,771 @@ +// RUN: %clang_cc1 -triple i686-windows-msvc -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s -DMSABI | FileCheck --check-prefix=MSC --check-prefix=M32 %s +// RUN: %clang_cc1 -triple x86_64-windows-msvc -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s -DMSABI | FileCheck --check-prefix=MSC --check-prefix=M64 %s +// RUN: %clang_cc1 -triple i686-windows-gnu -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s | FileCheck --check-prefix=GNU --check-prefix=G32 %s +// RUN: %clang_cc1 -triple x86_64-windows-gnu -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s | FileCheck --check-prefix=GNU --check-prefix=G64 %s +// RUN: %clang_cc1 -triple i686-windows-msvc -fno-rtti -emit-llvm -std=c++1y -O1 -o - %s -DMSABI | FileCheck --check-prefix=MO1 %s +// RUN: %clang_cc1 -triple i686-windows-gnu -fno-rtti -emit-llvm -std=c++1y -O1 -o - %s | FileCheck --check-prefix=GO1 %s + +// CHECK-NOT doesn't play nice with CHECK-DAG, so use separate run lines. +// RUN: %clang_cc1 -triple i686-windows-msvc -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s -DMSABI | FileCheck --check-prefix=MSC2 %s +// RUN: %clang_cc1 -triple i686-windows-gnu -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s | FileCheck --check-prefix=GNU2 %s + +// Helper structs to make templates more expressive. +struct ImplicitInst_Imported {}; +struct ImplicitInst_NotImported {}; +struct ExplicitDecl_Imported {}; +struct ExplicitInst_Imported {}; +struct ExplicitSpec_Imported {}; +struct ExplicitSpec_Def_Imported {}; +struct ExplicitSpec_InlineDef_Imported {}; +struct ExplicitSpec_NotImported {}; + +#define JOIN2(x, y) x##y +#define JOIN(x, y) JOIN2(x, y) +#define UNIQ(name) JOIN(name, __LINE__) +#define USEVARTYPE(type, var) type UNIQ(use)() { return var; } +#define USEVAR(var) USEVARTYPE(int, var) +#define USE(func) void UNIQ(use)() { func(); } +#define USEMEMFUNC(class, func) void (class::*UNIQ(use)())() { return &class::func; } +#define USECLASS(class) void UNIQ(USE)() { class x; } +#define USECOPYASSIGN(class) class& (class::*UNIQ(use)())(class&) { return &class::operator=; } +#define USEMOVEASSIGN(class) class& (class::*UNIQ(use)())(class&&) { return &class::operator=; } + +//===----------------------------------------------------------------------===// +// Globals +//===----------------------------------------------------------------------===// + +// Import declaration. +// MSC-DAG: @"\01?ExternGlobalDecl@@3HA" = external dllimport global i32 +// GNU-DAG: @ExternGlobalDecl = external dllimport global i32 +__declspec(dllimport) extern int ExternGlobalDecl; +USEVAR(ExternGlobalDecl) + +// dllimport implies a declaration. +// MSC-DAG: @"\01?GlobalDecl@@3HA" = external dllimport global i32 +// GNU-DAG: @GlobalDecl = external dllimport global i32 +__declspec(dllimport) int GlobalDecl; +USEVAR(GlobalDecl) + +// Redeclarations +// MSC-DAG: @"\01?GlobalRedecl1@@3HA" = external dllimport global i32 +// GNU-DAG: @GlobalRedecl1 = external dllimport global i32 +__declspec(dllimport) extern int GlobalRedecl1; +__declspec(dllimport) extern int GlobalRedecl1; +USEVAR(GlobalRedecl1) + +// MSC-DAG: @"\01?GlobalRedecl2a@@3HA" = external dllimport global i32 +// GNU-DAG: @GlobalRedecl2a = external dllimport global i32 +__declspec(dllimport) int GlobalRedecl2a; +__declspec(dllimport) int GlobalRedecl2a; +USEVAR(GlobalRedecl2a) + +// M32-DAG: @"\01?GlobalRedecl2b@@3PAHA" = external dllimport global i32* +// M64-DAG: @"\01?GlobalRedecl2b@@3PEAHEA" = external dllimport global i32* +// GNU-DAG: @GlobalRedecl2b = external dllimport global i32* +int *__attribute__((dllimport)) GlobalRedecl2b; +int *__attribute__((dllimport)) GlobalRedecl2b; +USEVARTYPE(int*, GlobalRedecl2b) + +// MSC-DAG: @"\01?GlobalRedecl2c@@3HA" = external dllimport global i32 +// GNU-DAG: @GlobalRedecl2c = external dllimport global i32 +int GlobalRedecl2c __attribute__((dllimport)); +int GlobalRedecl2c __attribute__((dllimport)); +USEVAR(GlobalRedecl2c) + +// NB: MSC issues a warning and makes GlobalRedecl3 dllexport. We follow GCC +// and drop the dllimport with a warning. +// MSC-DAG: @"\01?GlobalRedecl3@@3HA" = external global i32 +// GNU-DAG: @GlobalRedecl3 = external global i32 +__declspec(dllimport) extern int GlobalRedecl3; + extern int GlobalRedecl3; // dllimport ignored +USEVAR(GlobalRedecl3) + +// MSC-DAG: @"\01?ExternalGlobal@ns@@3HA" = external dllimport global i32 +// GNU-DAG: @_ZN2ns14ExternalGlobalE = external dllimport global i32 +namespace ns { __declspec(dllimport) int ExternalGlobal; } +USEVAR(ns::ExternalGlobal) + +int f(); +// MO1-DAG: @"\01?x@?1??inlineStaticLocalsFunc@@YAHXZ@4HA" = available_externally dllimport global i32 0 +// MO1-DAG: @"\01??_B?1??inlineStaticLocalsFunc@@YAHXZ@51" = available_externally dllimport global i32 0 +inline int __declspec(dllimport) inlineStaticLocalsFunc() { + static int x = f(); + return x++; +}; +USE(inlineStaticLocalsFunc); + +// The address of a dllimport global cannot be used in constant initialization. +// M32-DAG: @"\01?arr@?0??initializationFunc@@YAPAHXZ@4QBQAHB" = internal global [1 x i32*] zeroinitializer +// GNU-DAG: @_ZZ18initializationFuncvE3arr = internal global [1 x i32*] zeroinitializer +int *initializationFunc() { + static int *const arr[] = {&ExternGlobalDecl}; + return arr[0]; +} +USE(initializationFunc); + + +//===----------------------------------------------------------------------===// +// Variable templates +//===----------------------------------------------------------------------===// + +// Import declaration. +// MSC-DAG: @"\01??$ExternVarTmplDecl@UImplicitInst_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z17ExternVarTmplDeclI21ImplicitInst_ImportedE = external dllimport global i32 +template<typename T> __declspec(dllimport) extern int ExternVarTmplDecl; +USEVAR(ExternVarTmplDecl<ImplicitInst_Imported>) + +// dllimport implies a declaration. +// MSC-DAG: @"\01??$VarTmplDecl@UImplicitInst_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z11VarTmplDeclI21ImplicitInst_ImportedE = external dllimport global i32 +template<typename T> __declspec(dllimport) int VarTmplDecl; +USEVAR(VarTmplDecl<ImplicitInst_Imported>) + +// Redeclarations +// MSC-DAG: @"\01??$VarTmplRedecl1@UImplicitInst_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z14VarTmplRedecl1I21ImplicitInst_ImportedE = external dllimport global i32 +template<typename T> __declspec(dllimport) extern int VarTmplRedecl1; +template<typename T> __declspec(dllimport) extern int VarTmplRedecl1; +USEVAR(VarTmplRedecl1<ImplicitInst_Imported>) + +// MSC-DAG: @"\01??$VarTmplRedecl2@UImplicitInst_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z14VarTmplRedecl2I21ImplicitInst_ImportedE = external dllimport global i32 +template<typename T> __declspec(dllimport) int VarTmplRedecl2; +template<typename T> __declspec(dllimport) int VarTmplRedecl2; +USEVAR(VarTmplRedecl2<ImplicitInst_Imported>) + +// MSC-DAG: @"\01??$VarTmplRedecl3@UImplicitInst_Imported@@@@3HA" = external global i32 +// GNU-DAG: @_Z14VarTmplRedecl3I21ImplicitInst_ImportedE = external global i32 +template<typename T> __declspec(dllimport) extern int VarTmplRedecl3; +template<typename T> extern int VarTmplRedecl3; // dllimport ignored +USEVAR(VarTmplRedecl3<ImplicitInst_Imported>) + + +// MSC-DAG: @"\01??$ExternalVarTmpl@UImplicitInst_Imported@@@ns@@3HA" = external dllimport global i32 +// GNU-DAG: @_ZN2ns15ExternalVarTmplI21ImplicitInst_ImportedEE = external dllimport global i32 +namespace ns { template<typename T> __declspec(dllimport) int ExternalVarTmpl; } +USEVAR(ns::ExternalVarTmpl<ImplicitInst_Imported>) + + +template<typename T> int VarTmpl; +template<typename T> __declspec(dllimport) int ImportedVarTmpl; + +// Import implicit instantiation of an imported variable template. +// MSC-DAG: @"\01??$ImportedVarTmpl@UImplicitInst_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z15ImportedVarTmplI21ImplicitInst_ImportedE = external dllimport global i32 +USEVAR(ImportedVarTmpl<ImplicitInst_Imported>) + +// Import explicit instantiation declaration of an imported variable template. +// MSC-DAG: @"\01??$ImportedVarTmpl@UExplicitDecl_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z15ImportedVarTmplI21ExplicitDecl_ImportedE = external dllimport global i32 +extern template int ImportedVarTmpl<ExplicitDecl_Imported>; +USEVAR(ImportedVarTmpl<ExplicitDecl_Imported>) + +// An explicit instantiation definition of an imported variable template cannot +// be imported because the template must be defined which is illegal. + +// Import specialization of an imported variable template. +// MSC-DAG: @"\01??$ImportedVarTmpl@UExplicitSpec_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z15ImportedVarTmplI21ExplicitSpec_ImportedE = external dllimport global i32 +template<> __declspec(dllimport) int ImportedVarTmpl<ExplicitSpec_Imported>; +USEVAR(ImportedVarTmpl<ExplicitSpec_Imported>) + +// Not importing specialization of an imported variable template without +// explicit dllimport. +// MSC-DAG: @"\01??$ImportedVarTmpl@UExplicitSpec_NotImported@@@@3HA" = global i32 0, align 4 +// GNU-DAG: @_Z15ImportedVarTmplI24ExplicitSpec_NotImportedE = global i32 0, align 4 +template<> int ImportedVarTmpl<ExplicitSpec_NotImported>; +USEVAR(ImportedVarTmpl<ExplicitSpec_NotImported>) + +// Import explicit instantiation declaration of a non-imported variable template. +// MSC-DAG: @"\01??$VarTmpl@UExplicitDecl_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z7VarTmplI21ExplicitDecl_ImportedE = external dllimport global i32 +extern template __declspec(dllimport) int VarTmpl<ExplicitDecl_Imported>; +USEVAR(VarTmpl<ExplicitDecl_Imported>) + +// Import explicit instantiation definition of a non-imported variable template. +// MSC-DAG: @"\01??$VarTmpl@UExplicitInst_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z7VarTmplI21ExplicitInst_ImportedE = external dllimport global i32 +template __declspec(dllimport) int VarTmpl<ExplicitInst_Imported>; +USEVAR(VarTmpl<ExplicitInst_Imported>) + +// Import specialization of a non-imported variable template. +// MSC-DAG: @"\01??$VarTmpl@UExplicitSpec_Imported@@@@3HA" = external dllimport global i32 +// GNU-DAG: @_Z7VarTmplI21ExplicitSpec_ImportedE = external dllimport global i32 +template<> __declspec(dllimport) int VarTmpl<ExplicitSpec_Imported>; +USEVAR(VarTmpl<ExplicitSpec_Imported>) + + + +//===----------------------------------------------------------------------===// +// Functions +//===----------------------------------------------------------------------===// + +// Import function declaration. +// MSC-DAG: declare dllimport void @"\01?decl@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z4declv() +__declspec(dllimport) void decl(); +USE(decl) + +// extern "C" +// MSC-DAG: declare dllimport void @externC() +// GNU-DAG: declare dllimport void @externC() +extern "C" __declspec(dllimport) void externC(); +USE(externC) + +// Import inline function. +// MSC-DAG: declare dllimport void @"\01?inlineFunc@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z10inlineFuncv() +// MO1-DAG: define available_externally dllimport void @"\01?inlineFunc@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z10inlineFuncv() +__declspec(dllimport) inline void inlineFunc() {} +USE(inlineFunc) + +// MSC-DAG: declare dllimport void @"\01?inlineDecl@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z10inlineDeclv() +// MO1-DAG: define available_externally dllimport void @"\01?inlineDecl@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z10inlineDeclv() +__declspec(dllimport) inline void inlineDecl(); + void inlineDecl() {} +USE(inlineDecl) + +// MSC-DAG: declare dllimport void @"\01?inlineDef@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z9inlineDefv() +// MO1-DAG: define available_externally dllimport void @"\01?inlineDef@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z9inlineDefv() +__declspec(dllimport) void inlineDef(); + inline void inlineDef() {} +USE(inlineDef) + +// inline attributes +// MSC-DAG: declare dllimport void @"\01?noinline@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z8noinlinev() +__declspec(dllimport) __attribute__((noinline)) inline void noinline() {} +USE(noinline) + +// MSC2-NOT: @"\01?alwaysInline@@YAXXZ"() +// GNU2-NOT: @_Z12alwaysInlinev() +__declspec(dllimport) __attribute__((always_inline)) inline void alwaysInline() {} +USE(alwaysInline) + +// Redeclarations +// MSC-DAG: declare dllimport void @"\01?redecl1@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z7redecl1v() +__declspec(dllimport) void redecl1(); +__declspec(dllimport) void redecl1(); +USE(redecl1) + +// NB: MSC issues a warning and makes redecl2/redecl3 dllexport. We follow GCC +// and drop the dllimport with a warning. +// MSC-DAG: declare void @"\01?redecl2@@YAXXZ"() +// GNU-DAG: declare void @_Z7redecl2v() +__declspec(dllimport) void redecl2(); + void redecl2(); +USE(redecl2) + +// MSC-DAG: define void @"\01?redecl3@@YAXXZ"() +// GNU-DAG: define void @_Z7redecl3v() +__declspec(dllimport) void redecl3(); + void redecl3() {} // dllimport ignored +USE(redecl3) + + +// Friend functions +// MSC-DAG: declare dllimport void @"\01?friend1@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z7friend1v() +// MSC-DAG: declare void @"\01?friend2@@YAXXZ"() +// GNU-DAG: declare void @_Z7friend2v() +// MSC-DAG: define void @"\01?friend3@@YAXXZ"() +// GNU-DAG: define void @_Z7friend3v() +struct FuncFriend { + friend __declspec(dllimport) void friend1(); + friend __declspec(dllimport) void friend2(); + friend __declspec(dllimport) void friend3(); +}; +__declspec(dllimport) void friend1(); + void friend2(); // dllimport ignored + void friend3() {} // dllimport ignored +USE(friend1) +USE(friend2) +USE(friend3) + +// Implicit declarations can be redeclared with dllimport. +// MSC-DAG: declare dllimport noalias i8* @"\01??2@{{YAPAXI|YAPEAX_K}}@Z"( +// GNU-DAG: declare dllimport noalias i8* @_Znw{{[yj]}}( +__declspec(dllimport) void* operator new(__SIZE_TYPE__ n); +void UNIQ(use)() { ::operator new(42); } + +// MSC-DAG: declare dllimport void @"\01?externalFunc@ns@@YAXXZ"() +// GNU-DAG: declare dllimport void @_ZN2ns12externalFuncEv() +namespace ns { __declspec(dllimport) void externalFunc(); } +USE(ns::externalFunc) + + + +//===----------------------------------------------------------------------===// +// Function templates +//===----------------------------------------------------------------------===// + +// Import function template declaration. +// MSC-DAG: declare dllimport void @"\01??$funcTmplDecl@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z12funcTmplDeclI21ImplicitInst_ImportedEvv() +template<typename T> __declspec(dllimport) void funcTmplDecl(); +USE(funcTmplDecl<ImplicitInst_Imported>) + +// Function template definitions cannot be imported. + +// Import inline function template. +// MSC-DAG: declare dllimport void @"\01??$inlineFuncTmpl1@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z15inlineFuncTmpl1I21ImplicitInst_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$inlineFuncTmpl1@UImplicitInst_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z15inlineFuncTmpl1I21ImplicitInst_ImportedEvv() +template<typename T> __declspec(dllimport) inline void inlineFuncTmpl1() {} +USE(inlineFuncTmpl1<ImplicitInst_Imported>) + +// MSC-DAG: declare dllimport void @"\01??$inlineFuncTmpl2@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z15inlineFuncTmpl2I21ImplicitInst_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$inlineFuncTmpl2@UImplicitInst_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z15inlineFuncTmpl2I21ImplicitInst_ImportedEvv() +template<typename T> inline void __attribute__((dllimport)) inlineFuncTmpl2() {} +USE(inlineFuncTmpl2<ImplicitInst_Imported>) + +// MSC-DAG: declare dllimport void @"\01??$inlineFuncTmplDecl@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z18inlineFuncTmplDeclI21ImplicitInst_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$inlineFuncTmplDecl@UImplicitInst_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z18inlineFuncTmplDeclI21ImplicitInst_ImportedEvv() +template<typename T> __declspec(dllimport) inline void inlineFuncTmplDecl(); +template<typename T> void inlineFuncTmplDecl() {} +USE(inlineFuncTmplDecl<ImplicitInst_Imported>) + +// MSC-DAG: declare dllimport void @"\01??$inlineFuncTmplDef@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z17inlineFuncTmplDefI21ImplicitInst_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$inlineFuncTmplDef@UImplicitInst_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z17inlineFuncTmplDefI21ImplicitInst_ImportedEvv() +template<typename T> __declspec(dllimport) void inlineFuncTmplDef(); +template<typename T> inline void inlineFuncTmplDef() {} +USE(inlineFuncTmplDef<ImplicitInst_Imported>) + + +// Redeclarations +// MSC-DAG: declare dllimport void @"\01??$funcTmplRedecl1@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z15funcTmplRedecl1I21ImplicitInst_ImportedEvv() +template<typename T> __declspec(dllimport) void funcTmplRedecl1(); +template<typename T> __declspec(dllimport) void funcTmplRedecl1(); +USE(funcTmplRedecl1<ImplicitInst_Imported>) + +// MSC-DAG: declare void @"\01??$funcTmplRedecl2@UImplicitInst_NotImported@@@@YAXXZ"() +// GNU-DAG: declare void @_Z15funcTmplRedecl2I24ImplicitInst_NotImportedEvv() +template<typename T> __declspec(dllimport) void funcTmplRedecl2(); +template<typename T> void funcTmplRedecl2(); // dllimport ignored +USE(funcTmplRedecl2<ImplicitInst_NotImported>) + +// MSC-DAG: define linkonce_odr void @"\01??$funcTmplRedecl3@UImplicitInst_NotImported@@@@YAXXZ"() +// GNU-DAG: define linkonce_odr void @_Z15funcTmplRedecl3I24ImplicitInst_NotImportedEvv() +template<typename T> __declspec(dllimport) void funcTmplRedecl3(); +template<typename T> void funcTmplRedecl3() {} // dllimport ignored +USE(funcTmplRedecl3<ImplicitInst_NotImported>) + + +// Function template friends +// MSC-DAG: declare dllimport void @"\01??$funcTmplFriend1@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z15funcTmplFriend1I21ImplicitInst_ImportedEvv() +// MSC-DAG: declare void @"\01??$funcTmplFriend2@UImplicitInst_NotImported@@@@YAXXZ"() +// GNU-DAG: declare void @_Z15funcTmplFriend2I24ImplicitInst_NotImportedEvv() +// MSC-DAG: define linkonce_odr void @"\01??$funcTmplFriend3@UImplicitInst_NotImported@@@@YAXXZ"() +// GNU-DAG: define linkonce_odr void @_Z15funcTmplFriend3I24ImplicitInst_NotImportedEvv() +// MSC-DAG: declare dllimport void @"\01??$funcTmplFriend4@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z15funcTmplFriend4I21ImplicitInst_ImportedEvv() +struct FuncTmplFriend { + template<typename T> friend __declspec(dllimport) void funcTmplFriend1(); + template<typename T> friend __declspec(dllimport) void funcTmplFriend2(); + template<typename T> friend __declspec(dllimport) void funcTmplFriend3(); + template<typename T> friend __declspec(dllimport) inline void funcTmplFriend4(); +}; +template<typename T> __declspec(dllimport) void funcTmplFriend1(); +template<typename T> void funcTmplFriend2(); // dllimport ignored +template<typename T> void funcTmplFriend3() {} // dllimport ignored +template<typename T> inline void funcTmplFriend4() {} +USE(funcTmplFriend1<ImplicitInst_Imported>) +USE(funcTmplFriend2<ImplicitInst_NotImported>) +USE(funcTmplFriend3<ImplicitInst_NotImported>) +USE(funcTmplFriend4<ImplicitInst_Imported>) + +// MSC-DAG: declare dllimport void @"\01??$externalFuncTmpl@UImplicitInst_Imported@@@ns@@YAXXZ"() +// GNU-DAG: declare dllimport void @_ZN2ns16externalFuncTmplI21ImplicitInst_ImportedEEvv() +namespace ns { template<typename T> __declspec(dllimport) void externalFuncTmpl(); } +USE(ns::externalFuncTmpl<ImplicitInst_Imported>) + + +template<typename T> void funcTmpl() {} +template<typename T> inline void inlineFuncTmpl() {} +template<typename T> __declspec(dllimport) void importedFuncTmplDecl(); +template<typename T> __declspec(dllimport) inline void importedFuncTmpl() {} + +// Import implicit instantiation of an imported function template. +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmplDecl@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z20importedFuncTmplDeclI21ImplicitInst_ImportedEvv() +USE(importedFuncTmplDecl<ImplicitInst_Imported>) + +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmpl@UImplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z16importedFuncTmplI21ImplicitInst_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$importedFuncTmpl@UImplicitInst_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z16importedFuncTmplI21ImplicitInst_ImportedEvv() +USE(importedFuncTmpl<ImplicitInst_Imported>) + +// Import explicit instantiation declaration of an imported function template. +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmpl@UExplicitDecl_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z16importedFuncTmplI21ExplicitDecl_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$importedFuncTmpl@UExplicitDecl_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z16importedFuncTmplI21ExplicitDecl_ImportedEvv() +extern template void importedFuncTmpl<ExplicitDecl_Imported>(); +USE(importedFuncTmpl<ExplicitDecl_Imported>) + +// Import explicit instantiation definition of an imported function template. +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmpl@UExplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z16importedFuncTmplI21ExplicitInst_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$importedFuncTmpl@UExplicitInst_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z16importedFuncTmplI21ExplicitInst_ImportedEvv() +template void importedFuncTmpl<ExplicitInst_Imported>(); +USE(importedFuncTmpl<ExplicitInst_Imported>) + + +// Import specialization of an imported function template. +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmplDecl@UExplicitSpec_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z20importedFuncTmplDeclI21ExplicitSpec_ImportedEvv() +template<> __declspec(dllimport) void importedFuncTmplDecl<ExplicitSpec_Imported>(); +USE(importedFuncTmplDecl<ExplicitSpec_Imported>) + +// MSC-DAG-FIXME: declare dllimport void @"\01??$importedFuncTmplDecl@UExplicitSpec_Def_Imported@@@@YAXXZ"() +// MO1-DAG-FIXME: define available_externally dllimport void @"\01??$importedFuncTmplDecl@UExplicitSpec_Def_Imported@@@@YAXXZ"() +#ifdef MSABI +//template<> __declspec(dllimport) void importedFuncTmplDecl<ExplicitSpec_Def_Imported>() {} +//USE(importedFuncTmplDecl<ExplicitSpec_Def_Imported>) +#endif + +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmplDecl@UExplicitSpec_InlineDef_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z20importedFuncTmplDeclI31ExplicitSpec_InlineDef_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$importedFuncTmplDecl@UExplicitSpec_InlineDef_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z20importedFuncTmplDeclI31ExplicitSpec_InlineDef_ImportedEvv() +template<> __declspec(dllimport) inline void importedFuncTmplDecl<ExplicitSpec_InlineDef_Imported>() {} +USE(importedFuncTmplDecl<ExplicitSpec_InlineDef_Imported>) + + +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmpl@UExplicitSpec_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z16importedFuncTmplI21ExplicitSpec_ImportedEvv() +template<> __declspec(dllimport) void importedFuncTmpl<ExplicitSpec_Imported>(); +USE(importedFuncTmpl<ExplicitSpec_Imported>) + +// MSC-DAG-FIXME: declare dllimport void @"\01??$importedFuncTmpl@UExplicitSpec_Def_Imported@@@@YAXXZ"() +// MO1-DAG-FIXME: define available_externally dllimport void @"\01??$importedFuncTmpl@UExplicitSpec_Def_Imported@@@@YAXXZ"() +#ifdef MSABI +//template<> __declspec(dllimport) void importedFuncTmpl<ExplicitSpec_Def_Imported>() {} +//USE(importedFuncTmpl<ExplicitSpec_Def_Imported>) +#endif + +// MSC-DAG: declare dllimport void @"\01??$importedFuncTmpl@UExplicitSpec_InlineDef_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z16importedFuncTmplI31ExplicitSpec_InlineDef_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$importedFuncTmpl@UExplicitSpec_InlineDef_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z16importedFuncTmplI31ExplicitSpec_InlineDef_ImportedEvv() +template<> __declspec(dllimport) inline void importedFuncTmpl<ExplicitSpec_InlineDef_Imported>() {} +USE(importedFuncTmpl<ExplicitSpec_InlineDef_Imported>) + + +// Not importing specialization of an imported function template without +// explicit dllimport. +// MSC-DAG: define void @"\01??$importedFuncTmpl@UExplicitSpec_NotImported@@@@YAXXZ"() +// GNU-DAG: define void @_Z16importedFuncTmplI24ExplicitSpec_NotImportedEvv() +template<> void importedFuncTmpl<ExplicitSpec_NotImported>() {} +USE(importedFuncTmpl<ExplicitSpec_NotImported>) + + +// Import explicit instantiation declaration of a non-imported function template. +// MSC-DAG: declare dllimport void @"\01??$funcTmpl@UExplicitDecl_Imported@@@@YAXXZ"() +// MSC-DAG: declare dllimport void @"\01??$inlineFuncTmpl@UExplicitDecl_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z8funcTmplI21ExplicitDecl_ImportedEvv() +// GNU-DAG: declare dllimport void @_Z14inlineFuncTmplI21ExplicitDecl_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$inlineFuncTmpl@UExplicitDecl_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z14inlineFuncTmplI21ExplicitDecl_ImportedEvv() +extern template __declspec(dllimport) void funcTmpl<ExplicitDecl_Imported>(); +extern template __declspec(dllimport) void inlineFuncTmpl<ExplicitDecl_Imported>(); +USE(funcTmpl<ExplicitDecl_Imported>) +USE(inlineFuncTmpl<ExplicitDecl_Imported>) + + +// Import explicit instantiation definition of a non-imported function template. +// MSC-DAG: declare dllimport void @"\01??$funcTmpl@UExplicitInst_Imported@@@@YAXXZ"() +// MSC-DAG: declare dllimport void @"\01??$inlineFuncTmpl@UExplicitInst_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z8funcTmplI21ExplicitInst_ImportedEvv() +// GNU-DAG: declare dllimport void @_Z14inlineFuncTmplI21ExplicitInst_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$funcTmpl@UExplicitInst_Imported@@@@YAXXZ"() +// MO1-DAG: define available_externally dllimport void @"\01??$inlineFuncTmpl@UExplicitInst_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z8funcTmplI21ExplicitInst_ImportedEvv() +// GO1-DAG: define available_externally dllimport void @_Z14inlineFuncTmplI21ExplicitInst_ImportedEvv() +template __declspec(dllimport) void funcTmpl<ExplicitInst_Imported>(); +template __declspec(dllimport) void inlineFuncTmpl<ExplicitInst_Imported>(); +USE(funcTmpl<ExplicitInst_Imported>) +USE(inlineFuncTmpl<ExplicitInst_Imported>) + + +// Import specialization of a non-imported function template. +// MSC-DAG: declare dllimport void @"\01??$funcTmpl@UExplicitSpec_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z8funcTmplI21ExplicitSpec_ImportedEvv() +template<> __declspec(dllimport) void funcTmpl<ExplicitSpec_Imported>(); +USE(funcTmpl<ExplicitSpec_Imported>) + +// MSC-DAG-FIXME: declare dllimport void @"\01??$funcTmpl@UExplicitSpec_Def_Imported@@@@YAXXZ"() +// MO1-DAG-FIXME: define available_externally dllimport void @"\01??$funcTmpl@UExplicitSpec_Def_Imported@@@@YAXXZ"() +#ifdef MSABI +//template<> __declspec(dllimport) void funcTmpl<ExplicitSpec_Def_Imported>() {} +//USE(funcTmpl<ExplicitSpec_Def_Imported>) +#endif + +// MSC-DAG: declare dllimport void @"\01??$funcTmpl@UExplicitSpec_InlineDef_Imported@@@@YAXXZ"() +// GNU-DAG: declare dllimport void @_Z8funcTmplI31ExplicitSpec_InlineDef_ImportedEvv() +// MO1-DAG: define available_externally dllimport void @"\01??$funcTmpl@UExplicitSpec_InlineDef_Imported@@@@YAXXZ"() +// GO1-DAG: define available_externally dllimport void @_Z8funcTmplI31ExplicitSpec_InlineDef_ImportedEvv() +template<> __declspec(dllimport) inline void funcTmpl<ExplicitSpec_InlineDef_Imported>() {} +USE(funcTmpl<ExplicitSpec_InlineDef_Imported>) + + + +//===----------------------------------------------------------------------===// +// Classes +//===----------------------------------------------------------------------===// + +struct __declspec(dllimport) T { + void a() {} + // MO1-DAG: define available_externally dllimport x86_thiscallcc void @"\01?a@T@@QAEXXZ" + + static int b; + // MO1-DAG: @"\01?b@T@@2HA" = external dllimport global i32 + + T& operator=(T&) = default; + // MO1-DAG: define available_externally dllimport x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.T* @"\01??4T@@QAEAAU0@AAU0@@Z" + + T& operator=(T&&) = default; + // Note: Don't mark inline move operators dllimport because current MSVC versions don't export them. + // MO1-DAG: define linkonce_odr x86_thiscallcc dereferenceable({{[0-9]+}}) %struct.T* @"\01??4T@@QAEAAU0@$$QAU0@@Z" +}; +USEMEMFUNC(T, a) +USEVAR(T::b) +USECOPYASSIGN(T) +USEMOVEASSIGN(T) + +template <typename T> struct __declspec(dllimport) U { void foo() {} }; +// MO1-DAG: define available_externally dllimport x86_thiscallcc void @"\01?foo@?$U@H@@QAEXXZ" +struct __declspec(dllimport) V : public U<int> { }; +USEMEMFUNC(V, foo) + +struct __declspec(dllimport) W { virtual void foo() {} }; +USECLASS(W) +// vftable: +// MO1-DAG: @"\01??_7W@@6B@" = available_externally dllimport unnamed_addr constant [1 x i8*] [i8* bitcast (void (%struct.W*)* @"\01?foo@W@@UAEXXZ" to i8*)] +// GO1-DAG: @_ZTV1W = available_externally dllimport unnamed_addr constant [3 x i8*] [i8* null, i8* null, i8* bitcast (void (%struct.W*)* @_ZN1W3fooEv to i8*)] + +struct __declspec(dllimport) KeyFuncClass { + constexpr KeyFuncClass() {} + virtual void foo(); +}; +constexpr KeyFuncClass keyFuncClassVar; +// G32-DAG: @_ZTV12KeyFuncClass = external dllimport unnamed_addr constant [3 x i8*] + +struct __declspec(dllimport) X : public virtual W {}; +USECLASS(X) +// vbtable: +// MO1-DAG: @"\01??_8X@@7B@" = available_externally dllimport unnamed_addr constant [2 x i32] [i32 0, i32 4] + +struct __declspec(dllimport) Y { + int x; +}; + +struct __declspec(dllimport) Z { virtual ~Z() {} }; +USECLASS(Z) +// User-defined dtor: +// MO1-DAG: define available_externally dllimport x86_thiscallcc void @"\01??1Z@@UAE@XZ" + +namespace DontUseDtorAlias { + struct __declspec(dllimport) A { ~A(); }; + struct __declspec(dllimport) B : A { ~B(); }; + inline A::~A() { } + inline B::~B() { } + // Emit a real definition of B's constructor; don't alias it to A's. + // MO1-DAG: available_externally dllimport x86_thiscallcc void @"\01??1B@DontUseDtorAlias@@QAE@XZ" + USECLASS(B) +} + +namespace Vtordisp { + // Don't dllimport the vtordisp. + // MO1-DAG: define linkonce_odr x86_thiscallcc void @"\01?f@?$C@D@Vtordisp@@$4PPPPPPPM@A@AEXXZ" + + class Base { + virtual void f() {} + }; + template <typename T> + class __declspec(dllimport) C : virtual public Base { + public: + C() {} + virtual void f() {} + }; + template class C<char>; +} + +namespace ClassTemplateStaticDef { + // Regular template static field: + template <typename T> struct __declspec(dllimport) S { + static int x; + }; + template <typename T> int S<T>::x; + // MSC-DAG: @"\01?x@?$S@H@ClassTemplateStaticDef@@2HA" = available_externally dllimport global i32 0 + int f() { return S<int>::x; } + + // Partial class template specialization static field: + template <typename A> struct T; + template <typename A> struct __declspec(dllimport) T<A*> { + static int x; + }; + template <typename A> int T<A*>::x; + // GNU-DAG: @_ZN22ClassTemplateStaticDef1TIPvE1xE = available_externally dllimport global i32 0 + int g() { return T<void*>::x; } +} + +namespace PR19933 { +// Don't dynamically initialize dllimport vars. +// MSC2-NOT: @llvm.global_ctors +// GNU2-NOT: @llvm.global_ctors + + struct NonPOD { NonPOD(); }; + template <typename T> struct A { static NonPOD x; }; + template <typename T> NonPOD A<T>::x; + template struct __declspec(dllimport) A<int>; + // MSC-DAG: @"\01?x@?$A@H@PR19933@@2UNonPOD@2@A" = available_externally dllimport global %"struct.PR19933::NonPOD" zeroinitializer + + int f(); + template <typename T> struct B { static int x; }; + template <typename T> int B<T>::x = f(); + template struct __declspec(dllimport) B<int>; + // MSC-DAG: @"\01?x@?$B@H@PR19933@@2HA" = available_externally dllimport global i32 0 + + constexpr int g() { return 42; } + template <typename T> struct C { static int x; }; + template <typename T> int C<T>::x = g(); + template struct __declspec(dllimport) C<int>; + // MSC-DAG: @"\01?x@?$C@H@PR19933@@2HA" = available_externally dllimport global i32 42 + + template <int I> struct D { static int x, y; }; + template <int I> int D<I>::x = I + 1; + template <int I> int D<I>::y = I + f(); + template struct __declspec(dllimport) D<42>; + // MSC-DAG: @"\01?x@?$D@$0CK@@PR19933@@2HA" = available_externally dllimport global i32 43 + // MSC-DAG: @"\01?y@?$D@$0CK@@PR19933@@2HA" = available_externally dllimport global i32 0 +} + +// MS ignores DLL attributes on partial specializations. +template <typename T> struct PartiallySpecializedClassTemplate {}; +template <typename T> struct __declspec(dllimport) PartiallySpecializedClassTemplate<T*> { void f() {} }; +USEMEMFUNC(PartiallySpecializedClassTemplate<void*>, f); +// M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?f@?$PartiallySpecializedClassTemplate@PAX@@QAEXXZ" +// G32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @_ZN33PartiallySpecializedClassTemplateIPvE1fEv + +template <typename T> struct ExplicitlySpecializedClassTemplate {}; +template <> struct __declspec(dllimport) ExplicitlySpecializedClassTemplate<void*> { void f() {} }; +USEMEMFUNC(ExplicitlySpecializedClassTemplate<void*>, f); +// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?f@?$ExplicitlySpecializedClassTemplate@PAX@@QAEXXZ" +// G32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @_ZN34ExplicitlySpecializedClassTemplateIPvE1fEv + +//===----------------------------------------------------------------------===// +// Classes with template base classes +//===----------------------------------------------------------------------===// + +template <typename T> struct ClassTemplate { void func() {} }; +template <typename T> struct __declspec(dllexport) ExportedClassTemplate { void func() {} }; +template <typename T> struct __declspec(dllimport) ImportedClassTemplate { void func() {} }; + +template <typename T> struct ExplicitlySpecializedTemplate { void func() {} }; +template <> struct ExplicitlySpecializedTemplate<int> { void func() {} }; +template <typename T> struct ExplicitlyExportSpecializedTemplate { void func() {} }; +template <> struct __declspec(dllexport) ExplicitlyExportSpecializedTemplate<int> { void func() {} }; +template <typename T> struct ExplicitlyImportSpecializedTemplate { void func() {} }; +template <> struct __declspec(dllimport) ExplicitlyImportSpecializedTemplate<int> { void func() {} }; + +template <typename T> struct ExplicitlyInstantiatedTemplate { void func() {} }; +template struct ExplicitlyInstantiatedTemplate<int>; +template <typename T> struct ExplicitlyExportInstantiatedTemplate { void func() {} }; +template struct __declspec(dllexport) ExplicitlyExportInstantiatedTemplate<int>; +template <typename T> struct ExplicitlyImportInstantiatedTemplate { void func() {} }; +template struct __declspec(dllimport) ExplicitlyImportInstantiatedTemplate<int>; + + +// MS: ClassTemplate<int> gets imported. +struct __declspec(dllimport) DerivedFromTemplate : public ClassTemplate<int> {}; +USEMEMFUNC(ClassTemplate<int>, func) +// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ClassTemplate@H@@QAEXXZ" +// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIiE4funcEv + +// ImportedTemplate is explicitly imported. +struct __declspec(dllimport) DerivedFromImportedTemplate : public ImportedClassTemplate<int> {}; +USEMEMFUNC(ImportedClassTemplate<int>, func) +// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ImportedClassTemplate@H@@QAEXXZ" +// G32-DAG: declare dllimport x86_thiscallcc void @_ZN21ImportedClassTemplateIiE4funcEv + +// ExportedTemplate is explicitly exported. +struct __declspec(dllimport) DerivedFromExportedTemplate : public ExportedClassTemplate<int> {}; +USEMEMFUNC(ExportedClassTemplate<int>, func) +// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExportedClassTemplate@H@@QAEXXZ" +// G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN21ExportedClassTemplateIiE4funcEv + +// Base class already instantiated without attribute. +struct DerivedFromTemplateD : public ClassTemplate<double> {}; +struct __declspec(dllimport) DerivedFromTemplateD2 : public ClassTemplate<double> {}; +USEMEMFUNC(ClassTemplate<double>, func) +// M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?func@?$ClassTemplate@N@@QAEXXZ" +// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIdE4funcEv + +// MS: Base class already instantiated with dfferent attribute. +struct __declspec(dllexport) DerivedFromTemplateB : public ClassTemplate<bool> {}; +struct __declspec(dllimport) DerivedFromTemplateB2 : public ClassTemplate<bool> {}; +USEMEMFUNC(ClassTemplate<bool>, func) +// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ClassTemplate@_N@@QAEXXZ" +// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN13ClassTemplateIbE4funcEv + +// Base class already specialized without dll attribute. +struct __declspec(dllimport) DerivedFromExplicitlySpecializedTemplate : public ExplicitlySpecializedTemplate<int> {}; +USEMEMFUNC(ExplicitlySpecializedTemplate<int>, func) +// M32-DAG: define linkonce_odr x86_thiscallcc void @"\01?func@?$ExplicitlySpecializedTemplate@H@@QAEXXZ" +// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN29ExplicitlySpecializedTemplateIiE4funcEv + +// Base class alredy specialized with export attribute. +struct __declspec(dllimport) DerivedFromExplicitlyExportSpecializedTemplate : public ExplicitlyExportSpecializedTemplate<int> {}; +USEMEMFUNC(ExplicitlyExportSpecializedTemplate<int>, func) +// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportSpecializedTemplate@H@@QAEXXZ" +// G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN35ExplicitlyExportSpecializedTemplateIiE4funcEv + +// Base class already specialized with import attribute. +struct __declspec(dllimport) DerivedFromExplicitlyImportSpecializedTemplate : public ExplicitlyImportSpecializedTemplate<int> {}; +USEMEMFUNC(ExplicitlyImportSpecializedTemplate<int>, func) +// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportSpecializedTemplate@H@@QAEXXZ" +// G32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @_ZN35ExplicitlyImportSpecializedTemplateIiE4funcEv + +// Base class already instantiated without dll attribute. +struct __declspec(dllimport) DerivedFromExplicitlyInstantiatedTemplate : public ExplicitlyInstantiatedTemplate<int> {}; +USEMEMFUNC(ExplicitlyInstantiatedTemplate<int>, func) +// M32-DAG: define weak_odr x86_thiscallcc void @"\01?func@?$ExplicitlyInstantiatedTemplate@H@@QAEXXZ" +// G32-DAG: define weak_odr x86_thiscallcc void @_ZN30ExplicitlyInstantiatedTemplateIiE4funcEv + +// Base class already instantiated with export attribute. +struct __declspec(dllimport) DerivedFromExplicitlyExportInstantiatedTemplate : public ExplicitlyExportInstantiatedTemplate<int> {}; +USEMEMFUNC(ExplicitlyExportInstantiatedTemplate<int>, func) +// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?func@?$ExplicitlyExportInstantiatedTemplate@H@@QAEXXZ" +// G32-DAG: define weak_odr dllexport x86_thiscallcc void @_ZN36ExplicitlyExportInstantiatedTemplateIiE4funcEv + +// Base class already instantiated with import attribute. +struct __declspec(dllimport) DerivedFromExplicitlyImportInstantiatedTemplate : public ExplicitlyImportInstantiatedTemplate<int> {}; +USEMEMFUNC(ExplicitlyImportInstantiatedTemplate<int>, func) +// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$ExplicitlyImportInstantiatedTemplate@H@@QAEXXZ" +// G32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @_ZN36ExplicitlyImportInstantiatedTemplateIiE4funcEv + +// MS: A dll attribute propagates through multiple levels of instantiation. +template <typename T> struct TopClass { void func() {} }; +template <typename T> struct MiddleClass : public TopClass<T> { }; +struct __declspec(dllimport) BottomClass : public MiddleClass<int> { }; +USEMEMFUNC(TopClass<int>, func) +// M32-DAG: {{declare|define available_externally}} dllimport x86_thiscallcc void @"\01?func@?$TopClass@H@@QAEXXZ" +// G32-DAG: define linkonce_odr x86_thiscallcc void @_ZN8TopClassIiE4funcEv |