1// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o %t 2// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -fhidden-weak-vtables -emit-llvm -o %t.hidden 3// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -disable-llvm-optzns -O3 -emit-llvm -o %t.opt 4// RUN: FileCheck --check-prefix=CHECK-1 %s < %t 5// RUN: FileCheck --check-prefix=CHECK-2 %s < %t 6// RUN: FileCheck --check-prefix=CHECK-2-HIDDEN %s < %t.hidden 7// RUN: FileCheck --check-prefix=CHECK-3 %s < %t 8// RUN: FileCheck --check-prefix=CHECK-4 %s < %t 9// RUN: FileCheck --check-prefix=CHECK-5 %s < %t 10// RUN: FileCheck --check-prefix=CHECK-5-HIDDEN %s < %t.hidden 11// RUN: FileCheck --check-prefix=CHECK-6 %s < %t 12// RUN: FileCheck --check-prefix=CHECK-6-HIDDEN %s < %t.hidden 13// RUN: FileCheck --check-prefix=CHECK-7 %s < %t 14// RUN: FileCheck --check-prefix=CHECK-8 %s < %t 15// RUN: FileCheck --check-prefix=CHECK-9 %s < %t 16// RUN: FileCheck --check-prefix=CHECK-9-OPT %s < %t.opt 17// RUN: FileCheck --check-prefix=CHECK-10 %s < %t 18// RUN: FileCheck --check-prefix=CHECK-10-OPT %s < %t.opt 19// RUN: FileCheck --check-prefix=CHECK-11 %s < %t 20// RUN: FileCheck --check-prefix=CHECK-12 %s < %t 21// RUN: FileCheck --check-prefix=CHECK-13 %s < %t 22 23namespace { 24 struct A { 25 virtual void f() { } 26 }; 27} 28 29void f() { A b; } 30 31struct B { 32 B(); 33 virtual void f(); 34}; 35 36B::B() { } 37 38struct C : virtual B { 39 C(); 40 virtual void f() { } 41}; 42 43C::C() { } 44 45struct D { 46 virtual void f(); 47}; 48 49void D::f() { } 50 51static struct : D { } e; 52 53// The destructor is the key function. 54template<typename T> 55struct E { 56 virtual ~E(); 57}; 58 59template<typename T> E<T>::~E() { } 60 61// Anchor is the key function 62template<> 63struct E<char> { 64 virtual void anchor(); 65}; 66 67void E<char>::anchor() { } 68 69template struct E<short>; 70extern template struct E<int>; 71 72void use_E() { 73 E<int> ei; 74 (void)ei; 75 E<long> el; 76 (void)el; 77} 78 79// No key function 80template<typename T> 81struct F { 82 virtual void foo() { } 83}; 84 85// No key function 86template<> 87struct F<char> { 88 virtual void foo() { } 89}; 90 91template struct F<short>; 92extern template struct F<int>; 93 94void use_F() { 95 F<char> fc; 96 fc.foo(); 97 F<int> fi; 98 fi.foo(); 99 F<long> fl; 100 (void)fl; 101} 102 103// B has a key function that is not defined in this translation unit so its vtable 104// has external linkage. 105// CHECK-1: @_ZTV1B = external unnamed_addr constant 106 107// C has no key function, so its vtable should have weak_odr linkage 108// and hidden visibility (rdar://problem/7523229). 109// CHECK-2: @_ZTV1C = linkonce_odr unnamed_addr constant 110// CHECK-2: @_ZTS1C = linkonce_odr constant 111// CHECK-2: @_ZTI1C = linkonce_odr unnamed_addr constant 112// CHECK-2: @_ZTT1C = linkonce_odr unnamed_addr constant 113// CHECK-2-HIDDEN: @_ZTV1C = linkonce_odr hidden unnamed_addr constant 114// CHECK-2-HIDDEN: @_ZTS1C = linkonce_odr constant 115// CHECK-2-HIDDEN: @_ZTI1C = linkonce_odr hidden unnamed_addr constant 116// CHECK-2-HIDDEN: @_ZTT1C = linkonce_odr hidden unnamed_addr constant 117 118// D has a key function that is defined in this translation unit so its vtable is 119// defined in the translation unit. 120// CHECK-3: @_ZTV1D = unnamed_addr constant 121// CHECK-3: @_ZTS1D = constant 122// CHECK-3: @_ZTI1D = unnamed_addr constant 123 124// E<char> is an explicit specialization with a key function defined 125// in this translation unit, so its vtable should have external 126// linkage. 127// CHECK-4: @_ZTV1EIcE = unnamed_addr constant 128// CHECK-4: @_ZTS1EIcE = constant 129// CHECK-4: @_ZTI1EIcE = unnamed_addr constant 130 131// E<short> is an explicit template instantiation with a key function 132// defined in this translation unit, so its vtable should have 133// weak_odr linkage. 134// CHECK-5: @_ZTV1EIsE = weak_odr unnamed_addr constant 135// CHECK-5: @_ZTS1EIsE = weak_odr constant 136// CHECK-5: @_ZTI1EIsE = weak_odr unnamed_addr constant 137// CHECK-5-HIDDEN: @_ZTV1EIsE = weak_odr unnamed_addr constant 138// CHECK-5-HIDDEN: @_ZTS1EIsE = weak_odr constant 139// CHECK-5-HIDDEN: @_ZTI1EIsE = weak_odr unnamed_addr constant 140 141// F<short> is an explicit template instantiation without a key 142// function, so its vtable should have weak_odr linkage 143// CHECK-6: @_ZTV1FIsE = weak_odr unnamed_addr constant 144// CHECK-6: @_ZTS1FIsE = weak_odr constant 145// CHECK-6: @_ZTI1FIsE = weak_odr unnamed_addr constant 146// CHECK-6-HIDDEN: @_ZTV1FIsE = weak_odr unnamed_addr constant 147// CHECK-6-HIDDEN: @_ZTS1FIsE = weak_odr constant 148// CHECK-6-HIDDEN: @_ZTI1FIsE = weak_odr unnamed_addr constant 149 150// E<long> is an implicit template instantiation with a key function 151// defined in this translation unit, so its vtable should have 152// linkonce_odr linkage. 153// CHECK-7: @_ZTV1EIlE = linkonce_odr unnamed_addr constant 154// CHECK-7: @_ZTS1EIlE = linkonce_odr constant 155// CHECK-7: @_ZTI1EIlE = linkonce_odr unnamed_addr constant 156 157// F<long> is an implicit template instantiation with no key function, 158// so its vtable should have linkonce_odr linkage. 159// CHECK-8: @_ZTV1FIlE = linkonce_odr unnamed_addr constant 160// CHECK-8: @_ZTS1FIlE = linkonce_odr constant 161// CHECK-8: @_ZTI1FIlE = linkonce_odr unnamed_addr constant 162 163// F<int> is an explicit template instantiation declaration without a 164// key function, so its vtable should have external linkage. 165// CHECK-9: @_ZTV1FIiE = external unnamed_addr constant 166// CHECK-9-OPT: @_ZTV1FIiE = available_externally unnamed_addr constant 167 168// E<int> is an explicit template instantiation declaration. It has a 169// key function that is not instantiated, so we should only reference 170// its vtable, not define it. 171// CHECK-10: @_ZTV1EIiE = external unnamed_addr constant 172// CHECK-10-OPT: @_ZTV1EIiE = available_externally unnamed_addr constant 173 174// The anonymous struct for e has no linkage, so the vtable should have 175// internal linkage. 176// CHECK-11: @"_ZTV3$_0" = internal unnamed_addr constant 177// CHECK-11: @"_ZTS3$_0" = internal constant 178// CHECK-11: @"_ZTI3$_0" = internal unnamed_addr constant 179 180// The A vtable should have internal linkage since it is inside an anonymous 181// namespace. 182// CHECK-12: @_ZTVN12_GLOBAL__N_11AE = internal unnamed_addr constant 183// CHECK-12: @_ZTSN12_GLOBAL__N_11AE = internal constant 184// CHECK-12: @_ZTIN12_GLOBAL__N_11AE = internal unnamed_addr constant 185 186// F<char> is an explicit specialization without a key function, so 187// its vtable should have linkonce_odr linkage. 188// CHECK-13: @_ZTV1FIcE = linkonce_odr unnamed_addr constant 189// CHECK-13: @_ZTS1FIcE = linkonce_odr constant 190// CHECK-13: @_ZTI1FIcE = linkonce_odr unnamed_addr constant 191 192// RUN: FileCheck --check-prefix=CHECK-G %s < %t 193// 194// CHECK-G: @_ZTV1GIiE = linkonce_odr unnamed_addr constant 195template <typename T> 196class G { 197public: 198 G() {} 199 virtual void f0(); 200 virtual void f1(); 201}; 202template <> 203void G<int>::f1() {} 204template <typename T> 205void G<T>::f0() {} 206void G_f0() { new G<int>(); } 207 208// RUN: FileCheck --check-prefix=CHECK-H %s < %t 209 210// H<int> has a key function without a body but it's a template instantiation 211// so its VTable must be emitted. 212// CHECK-H: @_ZTV1HIiE = linkonce_odr unnamed_addr constant 213template <typename T> 214class H { 215public: 216 virtual ~H(); 217}; 218 219void use_H() { 220 H<int> h; 221} 222 223// RUN: FileCheck --check-prefix=CHECK-I %s < %t 224// RUN: FileCheck --check-prefix=CHECK-I-OPT %s < %t.opt 225 226// I<int> has an explicit instantiation declaration and needs a VTT and 227// construction vtables. We emit the VTT available_externally, but point it at 228// internal construction vtables because there is no way to form a reference to 229// the real construction vtables. 230 231// CHECK-I: @_ZTV1IIiE = external unnamed_addr constant 232// CHECK-I: @_ZTT1IIiE = external unnamed_addr constant 233// CHECK-I-NOT: @_ZTC1IIiE 234// 235// CHECK-I-OPT: @_ZTV1IIiE = available_externally unnamed_addr constant 236// CHECK-I-OPT: @_ZTT1IIiE = available_externally unnamed_addr constant {{.*}} @_ZTC1IIiE0_6VBase2 237// CHECK-I-OPT: @_ZTC1IIiE0_6VBase2 = internal unnamed_addr constant 238struct VBase1 { virtual void f(); }; struct VBase2 : virtual VBase1 {}; 239template<typename T> 240struct I : VBase2 {}; 241extern template struct I<int>; 242I<int> i; 243