1 // RUN: %clang_cc1 -std=c++11 -Wno-uninitialized -fno-rtti -emit-llvm %s -o - -triple=i386-pc-win32 -fms-extensions | FileCheck -allow-deprecated-dag-overlap %s 2 // RUN: %clang_cc1 -std=c++11 -Wno-uninitialized -fno-rtti -emit-llvm %s -o - -triple=x86_64-pc-win32 -fms-extensions | FileCheck %s -check-prefix=X64 3 // RUN: %clang_cc1 -std=c++11 -Wno-uninitialized -fno-rtti -emit-llvm %s -o - -triple=i386-pc-win32 -DINCOMPLETE_VIRTUAL -fms-extensions -verify 4 // RUN: %clang_cc1 -std=c++11 -Wno-uninitialized -fno-rtti -emit-llvm %s -o - -triple=i386-pc-win32 -DINCOMPLETE_VIRTUAL -DMEMFUN -fms-extensions -verify 5 6 namespace pr37399 { 7 template <typename T> 8 struct Functor { 9 void (T::*PtrToMemberFunction)(); 10 }; 11 // CHECK-DAG: %"struct.pr37399::Functor" = type { ptr } 12 13 template <typename SomeType> 14 class SimpleDerivedFunctor; 15 template <typename SomeType> 16 class SimpleDerivedFunctor : public Functor<SimpleDerivedFunctor<SomeType>> {}; 17 // CHECK-DAG: %"class.pr37399::SimpleDerivedFunctor" = type { %"struct.pr37399::Functor" } 18 19 SimpleDerivedFunctor<void> SimpleFunctor; 20 // CHECK-DAG: @"?SimpleFunctor@pr37399@@3V?$SimpleDerivedFunctor@X@1@A" = dso_local global %"class.pr37399::SimpleDerivedFunctor" zeroinitializer, align 4 21 22 short Global = 0; 23 template <typename SomeType> 24 class DerivedFunctor; 25 template <typename SomeType> 26 class DerivedFunctor 27 : public Functor<DerivedFunctor<void>> { 28 public: 29 void Foo() { 30 Global = 42; 31 } 32 }; 33 34 class MultipleBase { 35 public: 36 MultipleBase() : Value() {} 37 short Value; 38 }; 39 // CHECK-DAG: %"class.pr37399::MultipleBase" = type { i16 } 40 41 template <typename SomeType> 42 class MultiplyDerivedFunctor; 43 template <typename SomeType> 44 class MultiplyDerivedFunctor 45 : public Functor<MultiplyDerivedFunctor<void>>, 46 public MultipleBase { 47 public: 48 void Foo() { 49 MultipleBase::Value = 42*2; 50 } 51 }; 52 53 class VirtualBase { 54 public: 55 VirtualBase() : Value() {} 56 short Value; 57 }; 58 // CHECK-DAG: %"class.pr37399::VirtualBase" = type { i16 } 59 60 template <typename SomeType> 61 class VirtBaseFunctor 62 : public Functor<SomeType>, 63 public virtual VirtualBase{}; 64 template <typename SomeType> 65 class VirtuallyDerivedFunctor; 66 template <typename SomeType> 67 class VirtuallyDerivedFunctor 68 : public VirtBaseFunctor<VirtuallyDerivedFunctor<void>>, 69 public virtual VirtualBase { 70 public: 71 void Foo() { 72 VirtualBase::Value = 42*3; 73 } 74 }; 75 } // namespace pr37399 76 77 pr37399::DerivedFunctor<int> BFunctor; 78 // CHECK-DAG: @"?BFunctor@@3V?$DerivedFunctor@H@pr37399@@A" = dso_local global %"[[BFUNCTOR:class.pr37399::DerivedFunctor(\.[0-9]+)?]]" zeroinitializer, align 8 79 // CHECK-DAG: %"[[BFUNCTOR]]" = type { %"[[BFUNCTORBASE:struct.pr37399::Functor(\.[0-9]+)?]]" } 80 // CHECK-DAG: %"[[BFUNCTORBASE]]" = type { { ptr, i32, i32, i32 } } 81 pr37399::DerivedFunctor<void> AFunctor; 82 // CHECK-DAG: @"?AFunctor@@3V?$DerivedFunctor@X@pr37399@@A" = dso_local global %"[[AFUNCTOR:class.pr37399::DerivedFunctor(\.[0-9]+)?]]" zeroinitializer, align 8 83 // CHECK-DAG: %"[[AFUNCTOR]]" = type { %"[[AFUNCTORBASE:struct.pr37399::Functor(\.[0-9]+)?]]" } 84 // CHECK-DAG: %"[[AFUNCTORBASE]]" = type { { ptr, i32, i32, i32 } } 85 86 pr37399::MultiplyDerivedFunctor<int> DFunctor; 87 // CHECK-DAG: @"?DFunctor@@3V?$MultiplyDerivedFunctor@H@pr37399@@A" = dso_local global %"[[DFUNCTOR:class.pr37399::MultiplyDerivedFunctor(\.[0-9]+)?]]" zeroinitializer, align 8 88 // CHECK-DAG: %"[[DFUNCTOR]]" = type { %"[[DFUNCTORBASE:struct.pr37399::Functor(\.[0-9]+)?]]", %"class.pr37399::MultipleBase", [6 x i8] } 89 // CHECK-DAG: %"[[DFUNCTORBASE]]" = type { { ptr, i32, i32, i32 } } 90 pr37399::MultiplyDerivedFunctor<void> CFunctor; 91 // CHECK-DAG: @"?CFunctor@@3V?$MultiplyDerivedFunctor@X@pr37399@@A" = dso_local global %"[[CFUNCTOR:class.pr37399::MultiplyDerivedFunctor(\.[0-9]+)?]]" zeroinitializer, align 8 92 // CHECK-DAG: %"[[CFUNCTOR]]" = type { %"[[CFUNCTORBASE:struct.pr37399::Functor(\.[0-9]+)?]]", %"class.pr37399::MultipleBase", [6 x i8] } 93 // CHECK-DAG: %"[[CFUNCTORBASE]]" = type { { ptr, i32, i32, i32 } } 94 95 pr37399::VirtuallyDerivedFunctor<int> FFunctor; 96 // CHECK-DAG: @"?FFunctor@@3V?$VirtuallyDerivedFunctor@H@pr37399@@A" = dso_local global %"[[FFUNCTOR:class.pr37399::VirtuallyDerivedFunctor(\.[0-9]+)?]]" zeroinitializer, align 8 97 // CHECK-DAG: %"[[FFUNCTOR]]" = type { %"class.pr37399::VirtBaseFunctor.base", %"class.pr37399::VirtualBase" } 98 pr37399::VirtuallyDerivedFunctor<void> EFunctor; 99 // CHECK-DAG: @"?EFunctor@@3V?$VirtuallyDerivedFunctor@X@pr37399@@A" = dso_local global %"[[EFUNCTOR:class.pr37399::VirtuallyDerivedFunctor(\.[0-9]+)?]]" zeroinitializer, align 8 100 // CHECK-DAG: %"[[EFUNCTOR]]" = type { %"class.pr37399::VirtBaseFunctor.base", %"class.pr37399::VirtualBase" } 101 102 // CHECK-DAG: %"class.pr37399::VirtBaseFunctor.base" = type <{ %"[[VFUNCTORBASE:struct.pr37399::Functor(\.[0-9]+)?]]", ptr, [4 x i8] }> 103 // CHECK-DAG: %"[[VFUNCTORBASE]]" = type { { ptr, i32, i32, i32 } } 104 105 namespace pr37399 { 106 void SingleInheritanceFnPtrCall() { 107 BFunctor.PtrToMemberFunction = &DerivedFunctor<void>::Foo; 108 (AFunctor.*(BFunctor.PtrToMemberFunction))(); 109 } 110 void MultipleInheritanceFnPtrCall() { 111 DFunctor.PtrToMemberFunction = &MultiplyDerivedFunctor<void>::Foo; 112 Global = CFunctor.MultipleBase::Value; 113 (CFunctor.*(DFunctor.PtrToMemberFunction))(); 114 Global = CFunctor.MultipleBase::Value; 115 } 116 void VirtualInheritanceFnPtrCall() { 117 FFunctor.PtrToMemberFunction = &VirtuallyDerivedFunctor<void>::Foo; 118 Global = EFunctor.VirtualBase::Value; 119 (EFunctor.*(FFunctor.PtrToMemberFunction))(); 120 Global = EFunctor.VirtualBase::Value; 121 } 122 } // namespace pr37399 123 124 namespace pr43803 { 125 // This case is interesting because it exercises conversion between member 126 // pointer types when emitting constants. 127 128 struct B; 129 struct C { int B::*option; }; 130 extern const C table[3]; 131 struct A { 132 int x, y; 133 // Test the indirect case. 134 struct { 135 int z; 136 }; 137 }; 138 struct B : A {}; 139 const C table[] = { 140 {&B::x}, 141 {&B::y}, 142 {&B::z}, 143 }; 144 145 // CHECK: @"?table@pr43803@@3QBUC@1@B" = dso_local constant [3 x %"struct.pr43803::C"] 146 // CHECK-SAME: [%"struct.pr43803::C" { { i32, i32, i32 } zeroinitializer, [4 x i8] undef }, 147 // CHECK-SAME: %"struct.pr43803::C" { { i32, i32, i32 } { i32 4, i32 0, i32 0 }, [4 x i8] undef }, 148 // CHECK-SAME: %"struct.pr43803::C" { { i32, i32, i32 } { i32 8, i32 0, i32 0 }, [4 x i8] undef }] 149 } 150 151 namespace pr48687 { 152 template <typename T> struct A { 153 T value; 154 static constexpr auto address = &A<T>::value; 155 }; 156 extern template class A<float>; 157 template class A<float>; 158 // CHECK: @"?address@?$A@M@pr48687@@2QQ12@MQ12@" = weak_odr dso_local constant i32 0, comdat, align 4 159 } 160 161 struct PR26313_Y; 162 typedef void (PR26313_Y::*PR26313_FUNC)(); 163 struct PR26313_X { 164 PR26313_FUNC *ptr; 165 PR26313_X(); 166 }; 167 PR26313_X::PR26313_X() {} 168 void PR26313_f(PR26313_FUNC *p) { delete p; } 169 170 struct PR26313_Z; 171 int PR26313_Z::**a = nullptr; 172 int PR26313_Z::*b = *a; 173 // CHECK-DAG: @"?a@@3PAPQPR26313_Z@@HA" = dso_local global ptr null, align 4 174 // CHECK-DAG: @"?b@@3PQPR26313_Z@@HQ1@" = dso_local global { i32, i32, i32 } { i32 0, i32 0, i32 -1 }, align 4 175 176 namespace PR20947 { 177 struct A; 178 int A::**a = nullptr; 179 // CHECK-DAG: @"?a@PR20947@@3PAPQA@1@HA" = dso_local global ptr null, align 4 180 181 struct B; 182 int B::*&b = b; 183 // CHECK-DAG: @"?b@PR20947@@3AAPQB@1@HA" = dso_local global ptr null, align 4 184 } 185 186 namespace PR20017 { 187 template <typename T> 188 struct A { 189 int T::*m_fn1() { return nullptr; } 190 }; 191 struct B; 192 auto a = &A<B>::m_fn1; 193 // CHECK-DAG: @"?a@PR20017@@3P8?$A@UB@PR20017@@@1@AEPQB@1@HXZQ21@" = dso_local global ptr @"?m_fn1@?$A@UB@PR20017@@@PR20017@@QAEPQB@2@HXZ", align 4 194 } 195 196 #ifndef INCOMPLETE_VIRTUAL 197 struct B1 { 198 void foo(); 199 int b; 200 }; 201 struct B2 { 202 int b2; 203 void foo(); 204 }; 205 struct Single : B1 { 206 void foo(); 207 }; 208 struct Multiple : B1, B2 { 209 int m; 210 void foo(); 211 }; 212 struct Virtual : virtual B1 { 213 int v; 214 void foo(); 215 }; 216 217 struct POD { 218 int a; 219 int b; 220 }; 221 222 struct Polymorphic { 223 virtual void myVirtual(); 224 int a; 225 int b; 226 }; 227 228 // This class uses the virtual inheritance model, yet its vbptr offset is not 0. 229 // We still use zero for the null field offset, despite it being a valid field 230 // offset. 231 struct NonZeroVBPtr : POD, Virtual { 232 int n; 233 void foo(); 234 }; 235 236 struct Unspecified; 237 struct UnspecSingle; 238 239 // Check that we can lower the LLVM types and get the null initializers right. 240 int Single ::*s_d_memptr; 241 int Polymorphic::*p_d_memptr; 242 int Multiple ::*m_d_memptr; 243 int Virtual ::*v_d_memptr; 244 int NonZeroVBPtr::*n_d_memptr; 245 int Unspecified::*u_d_memptr; 246 int UnspecSingle::*us_d_memptr; 247 // CHECK: @"?s_d_memptr@@3PQSingle@@HQ1@" = dso_local global i32 -1, align 4 248 // CHECK: @"?p_d_memptr@@3PQPolymorphic@@HQ1@" = dso_local global i32 0, align 4 249 // CHECK: @"?m_d_memptr@@3PQMultiple@@HQ1@" = dso_local global i32 -1, align 4 250 // CHECK: @"?v_d_memptr@@3PQVirtual@@HQ1@" = dso_local global { i32, i32 } 251 // CHECK: { i32 0, i32 -1 }, align 4 252 // CHECK: @"?n_d_memptr@@3PQNonZeroVBPtr@@HQ1@" = dso_local global { i32, i32 } 253 // CHECK: { i32 0, i32 -1 }, align 4 254 // CHECK: @"?u_d_memptr@@3PQUnspecified@@HQ1@" = dso_local global { i32, i32, i32 } 255 // CHECK: { i32 0, i32 0, i32 -1 }, align 4 256 // CHECK: @"?us_d_memptr@@3PQUnspecSingle@@HQ1@" = dso_local global { i32, i32, i32 } 257 // CHECK: { i32 0, i32 0, i32 -1 }, align 4 258 259 void (Single ::*s_f_memptr)(); 260 void (Multiple::*m_f_memptr)(); 261 void (Virtual ::*v_f_memptr)(); 262 // CHECK: @"?s_f_memptr@@3P8Single@@AEXXZQ1@" = dso_local global ptr null, align 4 263 // CHECK: @"?m_f_memptr@@3P8Multiple@@AEXXZQ1@" = dso_local global { ptr, i32 } zeroinitializer, align 4 264 // CHECK: @"?v_f_memptr@@3P8Virtual@@AEXXZQ1@" = dso_local global { ptr, i32, i32 } zeroinitializer, align 4 265 266 // We can define Unspecified after locking in the inheritance model. 267 struct Unspecified : Multiple, Virtual { 268 void foo(); 269 int u; 270 }; 271 272 struct UnspecSingle { 273 void foo(); 274 }; 275 276 // Test memptr emission in a constant expression. 277 namespace Const { 278 void (Single ::*s_f_mp)() = &Single::foo; 279 void (Multiple ::*m_f_mp)() = &B2::foo; 280 void (Virtual ::*v_f_mp)() = &Virtual::foo; 281 void (Unspecified::*u_f_mp)() = &Unspecified::foo; 282 void (UnspecSingle::*us_f_mp)() = &UnspecSingle::foo; 283 // CHECK: @"?s_f_mp@Const@@3P8Single@@AEXXZQ2@" = 284 // CHECK: global ptr @"?foo@Single@@QAEXXZ", align 4 285 // CHECK: @"?m_f_mp@Const@@3P8Multiple@@AEXXZQ2@" = 286 // CHECK: global { ptr, i32 } { ptr @"?foo@B2@@QAEXXZ", i32 4 }, align 4 287 // CHECK: @"?v_f_mp@Const@@3P8Virtual@@AEXXZQ2@" = 288 // CHECK: global { ptr, i32, i32 } { ptr @"?foo@Virtual@@QAEXXZ", i32 0, i32 0 }, align 4 289 // CHECK: @"?u_f_mp@Const@@3P8Unspecified@@AEXXZQ2@" = 290 // CHECK: global { ptr, i32, i32, i32 } { ptr @"?foo@Unspecified@@QAEXXZ", i32 0, i32 0, i32 0 }, align 4 291 // CHECK: @"?us_f_mp@Const@@3P8UnspecSingle@@AEXXZQ2@" = 292 // CHECK: global { ptr, i32, i32, i32 } { ptr @"?foo@UnspecSingle@@QAEXXZ", i32 0, i32 0, i32 0 }, align 4 293 } 294 295 namespace CastParam { 296 // This exercises ConstExprEmitter instead of ValueDecl::evaluateValue. The 297 // extra reinterpret_cast for the parameter type requires more careful folding. 298 // FIXME: Or does it? If reinterpret_casts are no-ops, we should be able to 299 // strip them in evaluateValue() and just proceed as normal with an APValue. 300 struct A { 301 int a; 302 void foo(A *p); 303 }; 304 struct B { int b; }; 305 struct C : B, A { int c; }; 306 307 void (A::*ptr1)(void *) = (void (A::*)(void *)) &A::foo; 308 // CHECK: @"?ptr1@CastParam@@3P8A@1@AEXPAX@ZQ21@" = 309 // CHECK: global ptr @"?foo@A@CastParam@@QAEXPAU12@@Z", align 4 310 311 // Try a reinterpret_cast followed by a memptr conversion. 312 void (C::*ptr2)(void *) = (void (C::*)(void *)) (void (A::*)(void *)) &A::foo; 313 // CHECK: @"?ptr2@CastParam@@3P8C@1@AEXPAX@ZQ21@" = 314 // CHECK: global { ptr, i32 } { ptr @"?foo@A@CastParam@@QAEXPAU12@@Z", i32 4 }, align 4 315 316 void (C::*ptr3)(void *) = (void (C::*)(void *)) (void (A::*)(void *)) (void (A::*)(A *)) 0; 317 // CHECK: @"?ptr3@CastParam@@3P8C@1@AEXPAX@ZQ21@" = 318 // CHECK: global { ptr, i32 } zeroinitializer, align 4 319 320 struct D : C { 321 virtual void isPolymorphic(); 322 int d; 323 }; 324 325 // Try a cast that changes the inheritance model. Null for D is 0, but null for 326 // C is -1. We need the cast to long in order to hit the non-APValue path. 327 int C::*ptr4 = (int C::*) (int D::*) (long D::*) 0; 328 // CHECK: @"?ptr4@CastParam@@3PQC@1@HQ21@" = dso_local global i32 -1, align 4 329 330 // MSVC rejects this but we accept it. 331 int C::*ptr5 = (int C::*) (long D::*) 0; 332 // CHECK: @"?ptr5@CastParam@@3PQC@1@HQ21@" = dso_local global i32 -1, align 4 333 } 334 335 struct UnspecWithVBPtr; 336 int UnspecWithVBPtr::*forceUnspecWithVBPtr; 337 struct UnspecWithVBPtr : B1, virtual B2 { 338 int u; 339 void foo(); 340 }; 341 342 // Test emitting non-virtual member pointers in a non-constexpr setting. 343 void EmitNonVirtualMemberPointers() { 344 void (Single ::*s_f_memptr)() = &Single::foo; 345 void (Multiple ::*m_f_memptr)() = &Multiple::foo; 346 void (Virtual ::*v_f_memptr)() = &Virtual::foo; 347 void (Unspecified::*u_f_memptr)() = &Unspecified::foo; 348 void (UnspecWithVBPtr::*u2_f_memptr)() = &UnspecWithVBPtr::foo; 349 // CHECK: define dso_local void @"?EmitNonVirtualMemberPointers@@YAXXZ"() {{.*}} { 350 // CHECK: alloca ptr, align 4 351 // CHECK: alloca { ptr, i32 }, align 4 352 // CHECK: alloca { ptr, i32, i32 }, align 4 353 // CHECK: alloca { ptr, i32, i32, i32 }, align 4 354 // CHECK: store ptr @"?foo@Single@@QAEXXZ", ptr %{{.*}}, align 4 355 // CHECK: store { ptr, i32 } 356 // CHECK: { ptr @"?foo@Multiple@@QAEXXZ", i32 0 }, 357 // CHECK: ptr %{{.*}}, align 4 358 // CHECK: store { ptr, i32, i32 } 359 // CHECK: { ptr @"?foo@Virtual@@QAEXXZ", i32 0, i32 0 }, 360 // CHECK: ptr %{{.*}}, align 4 361 // CHECK: store { ptr, i32, i32, i32 } 362 // CHECK: { ptr @"?foo@Unspecified@@QAEXXZ", i32 0, i32 0, i32 0 }, 363 // CHECK: ptr %{{.*}}, align 4 364 // CHECK: store { ptr, i32, i32, i32 } 365 // CHECK: { ptr @"?foo@UnspecWithVBPtr@@QAEXXZ", 366 // CHECK: i32 0, i32 0, i32 0 }, 367 // CHECK: ptr %{{.*}}, align 4 368 // CHECK: ret void 369 // CHECK: } 370 } 371 372 void podMemPtrs() { 373 int POD::*memptr; 374 memptr = &POD::a; 375 memptr = &POD::b; 376 if (memptr) 377 memptr = 0; 378 // Check that member pointers use the right offsets and that null is -1. 379 // CHECK: define dso_local void @"?podMemPtrs@@YAXXZ"() {{.*}} { 380 // CHECK: %[[memptr:.*]] = alloca i32, align 4 381 // CHECK-NEXT: store i32 0, ptr %[[memptr]], align 4 382 // CHECK-NEXT: store i32 4, ptr %[[memptr]], align 4 383 // CHECK-NEXT: %[[memptr_val:.*]] = load i32, ptr %[[memptr]], align 4 384 // CHECK-NEXT: %{{.*}} = icmp ne i32 %[[memptr_val]], -1 385 // CHECK-NEXT: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} 386 // CHECK: store i32 -1, ptr %[[memptr]], align 4 387 // CHECK: ret void 388 // CHECK: } 389 } 390 391 void polymorphicMemPtrs() { 392 int Polymorphic::*memptr; 393 memptr = &Polymorphic::a; 394 memptr = &Polymorphic::b; 395 if (memptr) 396 memptr = 0; 397 // Member pointers for polymorphic classes include the vtable slot in their 398 // offset and use 0 to represent null. 399 // CHECK: define dso_local void @"?polymorphicMemPtrs@@YAXXZ"() {{.*}} { 400 // CHECK: %[[memptr:.*]] = alloca i32, align 4 401 // CHECK-NEXT: store i32 4, ptr %[[memptr]], align 4 402 // CHECK-NEXT: store i32 8, ptr %[[memptr]], align 4 403 // CHECK-NEXT: %[[memptr_val:.*]] = load i32, ptr %[[memptr]], align 4 404 // CHECK-NEXT: %{{.*}} = icmp ne i32 %[[memptr_val]], 0 405 // CHECK-NEXT: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} 406 // CHECK: store i32 0, ptr %[[memptr]], align 4 407 // CHECK: ret void 408 // CHECK: } 409 } 410 411 bool nullTestDataUnspecified(int Unspecified::*mp) { 412 return mp; 413 // CHECK: define dso_local noundef zeroext i1 @"?nullTestDataUnspecified@@YA_NPQUnspecified@@H@Z"{{.*}} { 414 // CHECK: %{{.*}} = load { i32, i32, i32 }, ptr %{{.*}}, align 4 415 // CHECK: store { i32, i32, i32 } {{.*}} align 4 416 // CHECK: %[[mp:.*]] = load { i32, i32, i32 }, ptr %{{.*}}, align 4 417 // CHECK: %[[mp0:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 0 418 // CHECK: %[[cmp0:.*]] = icmp ne i32 %[[mp0]], 0 419 // CHECK: %[[mp1:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 1 420 // CHECK: %[[cmp1:.*]] = icmp ne i32 %[[mp1]], 0 421 // CHECK: %[[and0:.*]] = or i1 %[[cmp0]], %[[cmp1]] 422 // CHECK: %[[mp2:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 2 423 // CHECK: %[[cmp2:.*]] = icmp ne i32 %[[mp2]], -1 424 // CHECK: %[[and1:.*]] = or i1 %[[and0]], %[[cmp2]] 425 // CHECK: ret i1 %[[and1]] 426 // CHECK: } 427 428 // Pass this large type indirectly. 429 // X64-LABEL: define dso_local noundef zeroext i1 @"?nullTestDataUnspecified@@ 430 // X64: (ptr noundef %0) 431 } 432 433 bool nullTestFunctionUnspecified(void (Unspecified::*mp)()) { 434 return mp; 435 // CHECK: define dso_local noundef zeroext i1 @"?nullTestFunctionUnspecified@@YA_NP8Unspecified@@AEXXZ@Z"{{.*}} { 436 // CHECK: %{{.*}} = load { ptr, i32, i32, i32 }, ptr %{{.*}}, align 4 437 // CHECK: store { ptr, i32, i32, i32 } {{.*}} align 4 438 // CHECK: %[[mp:.*]] = load { ptr, i32, i32, i32 }, ptr %{{.*}}, align 4 439 // CHECK: %[[mp0:.*]] = extractvalue { ptr, i32, i32, i32 } %[[mp]], 0 440 // CHECK: %[[cmp0:.*]] = icmp ne ptr %[[mp0]], null 441 // CHECK: ret i1 %[[cmp0]] 442 // CHECK: } 443 } 444 445 int loadDataMemberPointerVirtual(Virtual *o, int Virtual::*memptr) { 446 return o->*memptr; 447 // Test that we can unpack this aggregate member pointer and load the member 448 // data pointer. 449 // CHECK: define dso_local noundef i32 @"?loadDataMemberPointerVirtual@@YAHPAUVirtual@@PQ1@H@Z"{{.*}} { 450 // CHECK: %[[o:.*]] = load ptr, ptr %{{.*}}, align 4 451 // CHECK: %[[memptr:.*]] = load { i32, i32 }, ptr %{{.*}}, align 4 452 // CHECK: %[[memptr0:.*]] = extractvalue { i32, i32 } %[[memptr:.*]], 0 453 // CHECK: %[[memptr1:.*]] = extractvalue { i32, i32 } %[[memptr:.*]], 1 454 // CHECK: %[[vbptr:.*]] = getelementptr inbounds i8, ptr %[[o]], i32 0 455 // CHECK: %[[vbtable:.*]] = load ptr, ptr %[[vbptr_a:.*]] 456 // CHECK: %[[memptr1_shr:.*]] = ashr exact i32 %[[memptr1]], 2 457 // CHECK: %[[v7:.*]] = getelementptr inbounds i32, ptr %[[vbtable]], i32 %[[memptr1_shr]] 458 // CHECK: %[[vbase_offs:.*]] = load i32, ptr %[[v7]] 459 // CHECK: %[[v10:.*]] = getelementptr inbounds i8, ptr %[[vbptr]], i32 %[[vbase_offs]] 460 // CHECK: %[[offset:.*]] = getelementptr inbounds i8, ptr %[[v10]], i32 %[[memptr0]] 461 // CHECK: %[[v12:.*]] = load i32, ptr %[[offset]] 462 // CHECK: ret i32 %[[v12]] 463 // CHECK: } 464 465 // A two-field data memptr on x64 gets coerced to i64 and is passed in a 466 // register or memory. 467 // X64-LABEL: define dso_local noundef i32 @"?loadDataMemberPointerVirtual@@YAHPEAUVirtual@@PEQ1@H@Z" 468 // X64: (ptr noundef %o, i64 %memptr.coerce) 469 } 470 471 int loadDataMemberPointerUnspecified(Unspecified *o, int Unspecified::*memptr) { 472 return o->*memptr; 473 // Test that we can unpack this aggregate member pointer and load the member 474 // data pointer. 475 // CHECK: define dso_local noundef i32 @"?loadDataMemberPointerUnspecified@@YAHPAUUnspecified@@PQ1@H@Z"{{.*}} { 476 // CHECK: %[[o:.*]] = load ptr, ptr %{{.*}}, align 4 477 // CHECK: %[[memptr:.*]] = load { i32, i32, i32 }, ptr %{{.*}}, align 4 478 // CHECK: %[[memptr0:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 0 479 // CHECK: %[[memptr1:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 1 480 // CHECK: %[[memptr2:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 2 481 // CHECK: %[[is_vbase:.*]] = icmp ne i32 %[[memptr2]], 0 482 // CHECK: br i1 %[[is_vbase]], label %[[vadjust:.*]], label %[[skip:.*]] 483 // 484 // CHECK: [[vadjust]] 485 // CHECK: %[[vbptr:.*]] = getelementptr inbounds i8, ptr %[[o]], i32 %[[memptr1]] 486 // CHECK: %[[vbtable:.*]] = load ptr, ptr %[[vbptr_a:.*]] 487 // CHECK: %[[memptr2_shr:.*]] = ashr exact i32 %[[memptr2]], 2 488 // CHECK: %[[v7:.*]] = getelementptr inbounds i32, ptr %[[vbtable]], i32 %[[memptr2_shr]] 489 // CHECK: %[[vbase_offs:.*]] = load i32, ptr %[[v7]] 490 // CHECK: %[[base_adj:.*]] = getelementptr inbounds i8, ptr %[[vbptr]], i32 %[[vbase_offs]] 491 // 492 // CHECK: [[skip]] 493 // CHECK: %[[new_base:.*]] = phi ptr [ %[[o]], %{{.*}} ], [ %[[base_adj]], %[[vadjust]] ] 494 // CHECK: %[[offset:.*]] = getelementptr inbounds i8, ptr %[[new_base]], i32 %[[memptr0]] 495 // CHECK: %[[v12:.*]] = load i32, ptr %[[offset]] 496 // CHECK: ret i32 %[[v12]] 497 // CHECK: } 498 } 499 500 void callMemberPointerSingle(Single *o, void (Single::*memptr)()) { 501 (o->*memptr)(); 502 // Just look for an indirect thiscall. 503 // CHECK: define dso_local void @"?callMemberPointerSingle@@{{.*}} {{.*}} { 504 // CHECK: call x86_thiscallcc void %{{.*}}({{.*}} %{{.*}}) 505 // CHECK: ret void 506 // CHECK: } 507 508 // X64-LABEL: define dso_local void @"?callMemberPointerSingle@@ 509 // X64: (ptr noundef %o, ptr %memptr) 510 // X64: ret void 511 } 512 513 void callMemberPointerMultiple(Multiple *o, void (Multiple::*memptr)()) { 514 (o->*memptr)(); 515 // CHECK: define dso_local void @"?callMemberPointerMultiple@@{{.*}} { 516 // CHECK: %[[memptr0:.*]] = extractvalue { ptr, i32 } %{{.*}}, 0 517 // CHECK: %[[memptr1:.*]] = extractvalue { ptr, i32 } %{{.*}}, 1 518 // CHECK: %[[this_adjusted:.*]] = getelementptr inbounds i8, ptr %{{.*}}, i32 %[[memptr1]] 519 // CHECK: call x86_thiscallcc void %[[memptr0]]({{.*}} %[[this_adjusted]]) 520 // CHECK: ret void 521 // CHECK: } 522 } 523 524 void callMemberPointerVirtualBase(Virtual *o, void (Virtual::*memptr)()) { 525 (o->*memptr)(); 526 // This shares a lot with virtual data member pointers. 527 // CHECK: define dso_local void @"?callMemberPointerVirtualBase@@{{.*}} { 528 // CHECK: %[[memptr0:.*]] = extractvalue { ptr, i32, i32 } %{{.*}}, 0 529 // CHECK: %[[memptr1:.*]] = extractvalue { ptr, i32, i32 } %{{.*}}, 1 530 // CHECK: %[[memptr2:.*]] = extractvalue { ptr, i32, i32 } %{{.*}}, 2 531 // CHECK: %[[vbptr:.*]] = getelementptr inbounds i8, ptr %{{.*}}, i32 0 532 // CHECK: %[[vbtable:.*]] = load ptr, ptr %[[vbptr_a:.*]] 533 // CHECK: %[[memptr2_shr:.*]] = ashr exact i32 %[[memptr2]], 2 534 // CHECK: %[[v7:.*]] = getelementptr inbounds i32, ptr %[[vbtable]], i32 %[[memptr2_shr]] 535 // CHECK: %[[vbase_offs:.*]] = load i32, ptr %[[v7]] 536 // CHECK: %[[v10:.*]] = getelementptr inbounds i8, ptr %[[vbptr]], i32 %[[vbase_offs]] 537 // CHECK: %[[this_adjusted:.*]] = getelementptr inbounds i8, ptr %[[v10]], i32 %[[memptr1]] 538 // CHECK: call x86_thiscallcc void %[[memptr0]]({{.*}} %[[this_adjusted]]) 539 // CHECK: ret void 540 // CHECK: } 541 } 542 543 bool compareSingleFunctionMemptr(void (Single::*l)(), void (Single::*r)()) { 544 return l == r; 545 // Should only be one comparison here. 546 // CHECK: define dso_local noundef zeroext i1 @"?compareSingleFunctionMemptr@@YA_NP8Single@@AEXXZ0@Z"{{.*}} { 547 // CHECK-NOT: icmp 548 // CHECK: %[[r:.*]] = icmp eq 549 // CHECK-NOT: icmp 550 // CHECK: ret i1 %[[r]] 551 // CHECK: } 552 553 // X64-LABEL: define dso_local noundef zeroext i1 @"?compareSingleFunctionMemptr@@ 554 // X64: (ptr %{{[^,]*}}, ptr %{{[^)]*}}) 555 } 556 557 bool compareNeqSingleFunctionMemptr(void (Single::*l)(), void (Single::*r)()) { 558 return l != r; 559 // Should only be one comparison here. 560 // CHECK: define dso_local noundef zeroext i1 @"?compareNeqSingleFunctionMemptr@@YA_NP8Single@@AEXXZ0@Z"{{.*}} { 561 // CHECK-NOT: icmp 562 // CHECK: %[[r:.*]] = icmp ne 563 // CHECK-NOT: icmp 564 // CHECK: ret i1 %[[r]] 565 // CHECK: } 566 } 567 568 bool unspecFuncMemptrEq(void (Unspecified::*l)(), void (Unspecified::*r)()) { 569 return l == r; 570 // CHECK: define dso_local noundef zeroext i1 @"?unspecFuncMemptrEq@@YA_NP8Unspecified@@AEXXZ0@Z"{{.*}} { 571 // CHECK: %[[lhs0:.*]] = extractvalue { ptr, i32, i32, i32 } %[[l:.*]], 0 572 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r:.*]], 0 573 // CHECK: %[[cmp0:.*]] = icmp eq ptr %[[lhs0]], %{{.*}} 574 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[l]], 1 575 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r]], 1 576 // CHECK: %[[cmp1:.*]] = icmp eq i32 577 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[l]], 2 578 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r]], 2 579 // CHECK: %[[cmp2:.*]] = icmp eq i32 580 // CHECK: %[[res12:.*]] = and i1 %[[cmp1]], %[[cmp2]] 581 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[l]], 3 582 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r]], 3 583 // CHECK: %[[cmp3:.*]] = icmp eq i32 584 // CHECK: %[[res123:.*]] = and i1 %[[res12]], %[[cmp3]] 585 // CHECK: %[[iszero:.*]] = icmp eq ptr %[[lhs0]], null 586 // CHECK: %[[bits_or_null:.*]] = or i1 %[[res123]], %[[iszero]] 587 // CHECK: %{{.*}} = and i1 %[[bits_or_null]], %[[cmp0]] 588 // CHECK: ret i1 %{{.*}} 589 // CHECK: } 590 591 // X64-LABEL: define dso_local noundef zeroext i1 @"?unspecFuncMemptrEq@@ 592 // X64: (ptr noundef %0, ptr noundef %1) 593 } 594 595 bool unspecFuncMemptrNeq(void (Unspecified::*l)(), void (Unspecified::*r)()) { 596 return l != r; 597 // CHECK: define dso_local noundef zeroext i1 @"?unspecFuncMemptrNeq@@YA_NP8Unspecified@@AEXXZ0@Z"{{.*}} { 598 // CHECK: %[[lhs0:.*]] = extractvalue { ptr, i32, i32, i32 } %[[l:.*]], 0 599 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r:.*]], 0 600 // CHECK: %[[cmp0:.*]] = icmp ne ptr %[[lhs0]], %{{.*}} 601 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[l]], 1 602 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r]], 1 603 // CHECK: %[[cmp1:.*]] = icmp ne i32 604 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[l]], 2 605 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r]], 2 606 // CHECK: %[[cmp2:.*]] = icmp ne i32 607 // CHECK: %[[res12:.*]] = or i1 %[[cmp1]], %[[cmp2]] 608 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[l]], 3 609 // CHECK: %{{.*}} = extractvalue { ptr, i32, i32, i32 } %[[r]], 3 610 // CHECK: %[[cmp3:.*]] = icmp ne i32 611 // CHECK: %[[res123:.*]] = or i1 %[[res12]], %[[cmp3]] 612 // CHECK: %[[iszero:.*]] = icmp ne ptr %[[lhs0]], null 613 // CHECK: %[[bits_or_null:.*]] = and i1 %[[res123]], %[[iszero]] 614 // CHECK: %{{.*}} = or i1 %[[bits_or_null]], %[[cmp0]] 615 // CHECK: ret i1 %{{.*}} 616 // CHECK: } 617 } 618 619 bool unspecDataMemptrEq(int Unspecified::*l, int Unspecified::*r) { 620 return l == r; 621 // CHECK: define dso_local noundef zeroext i1 @"?unspecDataMemptrEq@@YA_NPQUnspecified@@H0@Z"{{.*}} { 622 // CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 0 623 // CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 0 624 // CHECK: icmp eq i32 625 // CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 1 626 // CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 1 627 // CHECK: icmp eq i32 628 // CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 2 629 // CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 2 630 // CHECK: icmp eq i32 631 // CHECK: and i1 632 // CHECK: and i1 633 // CHECK: ret i1 634 // CHECK: } 635 636 // X64-LABEL: define dso_local noundef zeroext i1 @"?unspecDataMemptrEq@@ 637 // X64: (ptr noundef %0, ptr noundef %1) 638 } 639 640 void (Multiple::*convertB2FuncToMultiple(void (B2::*mp)()))() { 641 return mp; 642 // CHECK: define dso_local i64 @"?convertB2FuncToMultiple@@YAP8Multiple@@AEXXZP8B2@@AEXXZ@Z"{{.*}} { 643 // CHECK: store 644 // CHECK: %[[mp:.*]] = load ptr, ptr %{{.*}}, align 4 645 // CHECK: icmp ne ptr %[[mp]], null 646 // CHECK: br i1 %{{.*}} label %{{.*}}, label %{{.*}} 647 // 648 // memptr.convert: ; preds = %entry 649 // CHECK: insertvalue { ptr, i32 } undef, ptr %[[mp]], 0 650 // CHECK: insertvalue { ptr, i32 } %{{.*}}, i32 4, 1 651 // CHECK: br label 652 // 653 // memptr.converted: ; preds = %memptr.convert, %entry 654 // CHECK: phi { ptr, i32 } [ zeroinitializer, %{{.*}} ], [ {{.*}} ] 655 // CHECK: } 656 } 657 658 void (B2::*convertMultipleFuncToB2(void (Multiple::*mp)()))() { 659 // FIXME: cl emits warning C4407 on this code because of the representation 660 // change. We might want to do the same. 661 return static_cast<void (B2::*)()>(mp); 662 // FIXME: We should return ptr instead of i32 here. The ptrtoint cast prevents 663 // LLVM from optimizing away the branch. This is likely a bug in 664 // lib/CodeGen/Targets/X86.cpp with how we classify memptr types for returns. 665 // 666 // CHECK: define dso_local i32 @"?convertMultipleFuncToB2@@YAP8B2@@AEXXZP8Multiple@@AEXXZ@Z"{{.*}} { 667 // CHECK: store 668 // CHECK: %[[src:.*]] = load { ptr, i32 }, ptr %{{.*}}, align 4 669 // CHECK: extractvalue { ptr, i32 } %[[src]], 0 670 // CHECK: icmp ne ptr %{{.*}}, null 671 // CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} 672 // 673 // memptr.convert: ; preds = %entry 674 // CHECK: %[[fp:.*]] = extractvalue { ptr, i32 } %[[src]], 0 675 // CHECK: br label 676 // 677 // memptr.converted: ; preds = %memptr.convert, %entry 678 // CHECK: phi ptr [ null, %{{.*}} ], [ %[[fp]], %{{.*}} ] 679 // CHECK: } 680 } 681 682 namespace Test1 { 683 684 struct A { int a; }; 685 struct B { int b; }; 686 struct C : virtual A { int c; }; 687 struct D : B, C { int d; }; 688 689 void (D::*convertCToD(void (C::*mp)()))() { 690 return mp; 691 // CHECK: define dso_local void @"?convertCToD@Test1@@YAP8D@1@AEXXZP8C@1@AEXXZ@Z"{{.*}} { 692 // CHECK: store 693 // CHECK: load { ptr, i32, i32 }, ptr %{{.*}}, align 4 694 // CHECK: extractvalue { ptr, i32, i32 } %{{.*}}, 0 695 // CHECK: icmp ne ptr %{{.*}}, null 696 // CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} 697 // 698 // memptr.convert: ; preds = %entry 699 // CHECK: extractvalue { ptr, i32, i32 } %{{.*}}, 0 700 // CHECK: %[[nvoff:.*]] = extractvalue { ptr, i32, i32 } %{{.*}}, 1 701 // CHECK: %[[vbidx:.*]] = extractvalue { ptr, i32, i32 } %{{.*}}, 2 702 // CHECK: %[[is_nvbase:.*]] = icmp eq i32 %[[vbidx]], 0 703 // CHECK: %[[nv_disp:.*]] = add nsw i32 %[[nvoff]], 4 704 // CHECK: %[[nv_adj:.*]] = select i1 %[[is_nvbase]], i32 %[[nv_disp]], i32 0 705 // CHECK: %[[dst_adj:.*]] = select i1 %[[is_nvbase]], i32 4, i32 0 706 // CHECK: %[[adj:.*]] = sub nsw i32 %[[nv_adj]], %[[dst_adj]] 707 // CHECK: insertvalue { ptr, i32, i32 } undef, ptr {{.*}}, 0 708 // CHECK: insertvalue { ptr, i32, i32 } {{.*}}, i32 %[[adj]], 1 709 // CHECK: insertvalue { ptr, i32, i32 } {{.*}}, i32 {{.*}}, 2 710 // CHECK: br label 711 // 712 // memptr.converted: ; preds = %memptr.convert, %entry 713 // CHECK: phi { ptr, i32, i32 } [ { ptr null, i32 0, i32 -1 }, {{.*}} ], [ {{.*}} ] 714 // CHECK: } 715 } 716 717 } 718 719 namespace Test2 { 720 // Test that we dynamically convert between different null reps. 721 722 struct A { int a; }; 723 struct B : A { int b; }; 724 struct C : A { 725 int c; 726 virtual void hasVfPtr(); 727 }; 728 729 int A::*reinterpret(int B::*mp) { 730 return reinterpret_cast<int A::*>(mp); 731 // CHECK: define dso_local i32 @"?reinterpret@Test2@@YAPQA@1@HPQB@1@H@Z"{{.*}} { 732 // CHECK-NOT: select 733 // CHECK: ret i32 734 // CHECK: } 735 } 736 737 int A::*reinterpret(int C::*mp) { 738 return reinterpret_cast<int A::*>(mp); 739 // CHECK: define dso_local i32 @"?reinterpret@Test2@@YAPQA@1@HPQC@1@H@Z"{{.*}} { 740 // CHECK: %[[mp:.*]] = load i32, ptr 741 // CHECK: %[[cmp:.*]] = icmp ne i32 %[[mp]], 0 742 // CHECK: select i1 %[[cmp]], i32 %[[mp]], i32 -1 743 // CHECK: } 744 } 745 746 } 747 748 namespace Test3 { 749 // Make sure we cast 'this' to ptr before using GEP. 750 751 struct A { 752 int a; 753 int b; 754 }; 755 756 int *load_data(A *a, int A::*mp) { 757 return &(a->*mp); 758 // CHECK-LABEL: define dso_local noundef ptr @"?load_data@Test3@@YAPAHPAUA@1@PQ21@H@Z"{{.*}} { 759 // CHECK: %[[a:.*]] = load ptr, ptr %{{.*}}, align 4 760 // CHECK: %[[mp:.*]] = load i32, ptr %{{.*}}, align 4 761 // CHECK: getelementptr inbounds i8, ptr %[[a]], i32 %[[mp]] 762 // CHECK: } 763 } 764 765 } 766 767 namespace Test4 { 768 769 struct A { virtual void f(); }; 770 struct B { virtual void g(); }; 771 struct C : A, B { virtual void g(); }; 772 773 void (C::*getmp())() { 774 return &C::g; 775 } 776 // CHECK-LABEL: define dso_local i64 @"?getmp@Test4@@YAP8C@1@AEXXZXZ"() 777 // CHECK: store { ptr, i32 } { ptr @"??_9C@Test4@@$BA@AE", i32 4 }, ptr %{{.*}} 778 // 779 780 // CHECK-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@Test4@@$BA@AE"(ptr noundef %this, ...) {{.*}} comdat 781 // CHECK-NOT: getelementptr 782 // CHECK: load ptr, ptr %{{.*}} 783 // CHECK: getelementptr inbounds ptr, ptr %{{.*}}, i64 0 784 // CHECK-NOT: getelementptr 785 // CHECK: musttail call x86_thiscallcc void (ptr, ...) % 786 787 } 788 789 namespace pr20007 { 790 struct A { 791 void f(); 792 void f(int); 793 }; 794 struct B : public A {}; 795 void test() { void (B::*a)() = &B::f; } 796 // CHECK-LABEL: define dso_local void @"?test@pr20007@@YAXXZ" 797 // CHECK: store ptr @"?f@A@pr20007@@QAEXXZ" 798 } 799 800 namespace pr20007_kw { 801 struct A { 802 void f(); 803 void f(int); 804 }; 805 struct __single_inheritance B; 806 struct B : public A {}; 807 void test() { void (B::*a)() = &B::f; } 808 // CHECK-LABEL: define dso_local void @"?test@pr20007_kw@@YAXXZ" 809 // CHECK: store ptr @"?f@A@pr20007_kw@@QAEXXZ" 810 } 811 812 namespace pr20007_pragma { 813 struct A { 814 void f(); 815 void f(int); 816 }; 817 struct B : public A {}; 818 void test() { (void)(void (B::*)()) &B::f; } 819 #pragma pointers_to_members(full_generality, virtual_inheritance) 820 static_assert(sizeof(int B::*) == 4, ""); 821 static_assert(sizeof(int A::*) == 4, ""); 822 #pragma pointers_to_members(best_case) 823 // CHECK-LABEL: define dso_local void @"?test@pr20007_pragma@@YAXXZ" 824 } 825 826 namespace pr20007_pragma2 { 827 struct A { 828 }; 829 struct B : public A { 830 void f(); 831 }; 832 void test() { (void)&B::f; } 833 #pragma pointers_to_members(full_generality, virtual_inheritance) 834 static_assert(sizeof(int B::*) == 4, ""); 835 static_assert(sizeof(int A::*) == 12, ""); 836 #pragma pointers_to_members(best_case) 837 // CHECK-LABEL: define dso_local void @"?test@pr20007_pragma2@@YAXXZ" 838 } 839 840 namespace pr23823 { 841 struct Base { void Method(); }; 842 struct Child : Base {}; 843 void use(void (Child::*const &)()); 844 void f() { use(&Child::Method); } 845 #pragma pointers_to_members(full_generality, virtual_inheritance) 846 static_assert(sizeof(int Base::*) == 4, ""); 847 static_assert(sizeof(int Child::*) == 4, ""); 848 #pragma pointers_to_members(best_case) 849 } 850 851 namespace pr19987 { 852 template <typename T> 853 struct S { 854 int T::*x; 855 }; 856 857 struct U : S<U> {}; 858 859 static_assert(sizeof(S<U>::x) == 12, ""); 860 } 861 862 #else 863 struct __virtual_inheritance A; 864 #ifdef MEMFUN 865 int foo(A *a, int (A::*mp)()) { 866 return (a->*mp)(); // expected-error{{requires a complete class type}} 867 } 868 #else 869 int foo(A *a, int A::*mp) { 870 return a->*mp; // expected-error{{requires a complete class type}} 871 } 872 #endif 873 #endif 874 875 namespace pr23878 { 876 struct A { virtual void g(); }; 877 struct B { virtual void f(); }; 878 struct C : virtual B { void f(); }; 879 struct D : A, C {}; 880 881 typedef void (D::*DMemPtrTy)(); 882 883 // CHECK-LABEL: define dso_local void @"?get_memptr@pr23878@@YAP8D@1@AEXXZXZ" 884 // CHECK: @"??_9C@pr23878@@$BA@AE", i32 0, i32 4 885 DMemPtrTy get_memptr() { return &D::f; } 886 } 887 888 class C {}; 889 890 typedef void (C::*f)(); 891 892 class CA : public C { 893 public: 894 void OnHelp(void); 895 int OnHelp(int); 896 }; 897 898 // CHECK-LABEL: foo_fun 899 void foo_fun() { 900 // CHECK: store ptr @"?OnHelp@CA@@QAEXXZ", ptr 901 f func = (f)&CA::OnHelp; 902 } 903 namespace PR24703 { 904 struct S; 905 906 void f(int S::*&p) {} 907 // CHECK-LABEL: define dso_local void @"?f@PR24703@@YAXAAPQS@1@H@Z"( 908 } 909 910 namespace ReferenceToMPTWithIncompleteClass { 911 struct S; 912 struct J; 913 struct K; 914 extern K *k; 915 916 // CHECK-LABEL: @"?f@ReferenceToMPTWithIncompleteClass@@YAIAAPQS@1@H@Z"( 917 // CHECK: ret i32 12 918 unsigned f(int S::*&p) { return sizeof p; } 919 920 // CHECK-LABEL: @"?g@ReferenceToMPTWithIncompleteClass@@YA_NAAPQJ@1@H0@Z"( 921 bool g(int J::*&p, int J::*&q) { return p == q; } 922 923 // CHECK-LABEL: @"?h@ReferenceToMPTWithIncompleteClass@@YAHAAPQK@1@H@Z"( 924 int h(int K::*&p) { return k->*p; } 925 } 926 927 namespace PMFInTemplateArgument { 928 template <class C, int (C::*M)(int)> 929 void JSMethod(); 930 class A { 931 int printd(int); 932 void printd(); 933 }; 934 void A::printd() { JSMethod<A, &A::printd>(); } 935 // CHECK-LABEL: @"??$JSMethod@VA@PMFInTemplateArgument@@$1?printd@12@AAEHH@Z@PMFInTemplateArgument@@YAXXZ"( 936 } 937