1 // RUN: %clang_cc1 %s -triple=i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s 2 // RUN: %clang_cc1 %s -triple=x86_64-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s 3 // RUN: %clang_cc1 %s -triple=i686-pc-windows-msvc -fms-extensions -emit-llvm -o - | FileCheck %s 4 // RUN: %clang_cc1 %s -triple=x86_64-pc-windows-msvc -fms-extensions -emit-llvm -o - | FileCheck %s 5 6 struct S { 7 S(); 8 ~S(); 9 }; 10 11 template <typename T> struct __declspec(dllexport) ExportedTemplate { 12 static S s; 13 }; 14 template <typename T> S ExportedTemplate<T>::s; 15 void useExportedTemplate(ExportedTemplate<int> x) { 16 (void)x.s; 17 } 18 int f(); 19 namespace selectany_init { 20 // MS don't put selectany static var in the linker directive, init routine 21 // f() is not getting called if x is not referenced. 22 int __declspec(selectany) x = f(); 23 inline int __declspec(selectany) x1 = f(); 24 } 25 26 namespace explicit_template_instantiation { 27 template <typename T> struct A { static int x; }; 28 template <typename T> int A<T>::x = f(); 29 template struct A<int>; 30 } 31 32 namespace implicit_template_instantiation { 33 template <typename T> struct A { static int x; }; 34 template <typename T> int A<T>::x = f(); 35 int g() { return A<int>::x; } 36 } 37 38 39 template <class T> 40 struct X_ { 41 static T ioo; 42 static T init(); 43 }; 44 template <class T> T X_<T>::ioo = X_<T>::init(); 45 template struct X_<int>; 46 47 template <class T> 48 struct X { 49 static T ioo; 50 static T init(); 51 }; 52 template <> int X<int>::ioo = X<int>::init(); 53 template struct X<int>; 54 class a { 55 public: 56 a(); 57 }; 58 // For the static var inside unnamed namespace, the object is local to TU. 59 // No need to put static var in the linker directive. 60 // The static init routine is called before main. 61 namespace { 62 template <int> class aj { 63 public: 64 static a al; 65 }; 66 template <int am> a aj<am>::al; 67 class b : aj<3> { 68 void c(); 69 }; 70 void b::c() { al; } 71 } 72 73 // C++17, inline static data member also need to use 74 struct A 75 { 76 A(); 77 ~A(); 78 }; 79 80 struct S1 81 { 82 inline static A aoo; // C++17 inline variable, thus also a definition 83 }; 84 85 int foo(); 86 inline int zoo = foo(); 87 inline static int boo = foo(); 88 inline __declspec(dllexport) A exported_inline{}; 89 90 // CHECK: @llvm.used = appending global [10 x ptr] [ptr @"?x@selectany_init@@3HA", ptr @"?x1@selectany_init@@3HA", ptr @"?x@?$A@H@explicit_template_instantiation@@2HA", ptr @"?ioo@?$X_@H@@2HA", ptr @"?ioo@?$X@H@@2HA", ptr @"?aoo@S1@@2UA@@A", ptr @"?zoo@@3HA", ptr @"?exported_inline@@3UA@@A", ptr @"?s@?$ExportedTemplate@H@@2US@@A", ptr @"?x@?$A@H@implicit_template_instantiation@@2HA"], section "llvm.metadata" 91