| 1 | // RUN: %clang_cc1 -fno-rtti -emit-llvm -fdump-vtable-layouts %s -o %t.ll -triple=i386-pc-win32 > %t |
| 2 | // RUN: FileCheck %s < %t |
| 3 | // RUN: FileCheck --check-prefix=MANGLING %s < %t.ll |
| 4 | |
| 5 | // For now, just make sure x86_64 doesn't crash. |
| 6 | // RUN: %clang_cc1 -fno-rtti -emit-llvm-only -fdump-vtable-layouts %s -triple=x86_64-pc-win32 > /dev/null |
| 7 | |
| 8 | struct V1 { |
| 9 | virtual void f(); |
| 10 | virtual ~V1(); |
| 11 | }; |
| 12 | |
| 13 | struct V2 { |
| 14 | virtual void f(); |
| 15 | virtual ~V2(); |
| 16 | int v; |
| 17 | }; |
| 18 | |
| 19 | struct Z { |
| 20 | virtual void g(); |
| 21 | virtual ~Z(); |
| 22 | int x; |
| 23 | }; |
| 24 | |
| 25 | struct V3 : Z, V2 { |
| 26 | }; |
| 27 | |
| 28 | struct V4 : Z, V1, V2 { |
| 29 | int y; |
| 30 | }; |
| 31 | |
| 32 | void use_somewhere_else(void*); |
| 33 | |
| 34 | namespace simple { |
| 35 | // In case of a single-layer virtual inheritance, the "this" adjustment for a |
| 36 | // virtual method is done statically: |
| 37 | // struct A { |
| 38 | // virtual void f(); // Expects "(A*)this" in ECX |
| 39 | // }; |
| 40 | // struct B : virtual A { |
| 41 | // virtual void f(); // Expects "(char*)(B*)this + 12" in ECX |
| 42 | // virtual ~B(); // Might call f() |
| 43 | // }; |
| 44 | // |
| 45 | // If a class overrides a virtual function of its base and has a non-trivial |
| 46 | // ctor/dtor that call(s) the virtual function (or may escape "this" to some |
| 47 | // code that might call it), a virtual adjustment might be needed in case the |
| 48 | // current class layout and the most derived class layout are different. |
| 49 | // This is done using vtordisp thunks. |
| 50 | // |
| 51 | // A simple vtordisp{x,y} thunk for Method@Class is something like: |
| 52 | // sub ecx, [ecx+x] // apply the vtordisp adjustment |
| 53 | // sub ecx, y // apply the subobject adjustment, if needed. |
| 54 | // jmp Method@Class |
| 55 | |
| 56 | struct A : virtual V1 { |
| 57 | // CHECK-LABEL: VFTable for 'V1' in 'simple::A' (2 entries). |
| 58 | // CHECK-NEXT: 0 | void simple::A::f() |
| 59 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 60 | // CHECK-NEXT: 1 | simple::A::~A() [scalar deleting] |
| 61 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 62 | |
| 63 | // CHECK-LABEL: Thunks for 'simple::A::~A()' (1 entry). |
| 64 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, 0 non-virtual] |
| 65 | |
| 66 | // CHECK-LABEL: Thunks for 'void simple::A::f()' (1 entry). |
| 67 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, 0 non-virtual] |
| 68 | |
| 69 | virtual void f(); |
| 70 | // MANGLING-DAG: @"?f@A@simple@@$4PPPPPPPM@A@AEXXZ" |
| 71 | |
| 72 | virtual ~A(); |
| 73 | // MANGLING-DAG: @"??_EA@simple@@$4PPPPPPPM@A@AEPAXI@Z" |
| 74 | }; |
| 75 | |
| 76 | A a; |
| 77 | void use(A *obj) { obj->f(); } |
| 78 | |
| 79 | struct B : virtual V3 { |
| 80 | // CHECK-LABEL: VFTable for 'Z' in 'V3' in 'simple::B' (2 entries). |
| 81 | // CHECK-NEXT: 0 | void Z::g() |
| 82 | // CHECK-NEXT: 1 | simple::B::~B() [scalar deleting] |
| 83 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 84 | |
| 85 | // CHECK-LABEL: Thunks for 'simple::B::~B()' (1 entry). |
| 86 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, 0 non-virtual] |
| 87 | |
| 88 | // CHECK-LABEL: VFTable for 'V2' in 'V3' in 'simple::B' (2 entries). |
| 89 | // CHECK-NEXT: 0 | void simple::B::f() |
| 90 | // CHECK-NEXT: [this adjustment: vtordisp at -12, 0 non-virtual] |
| 91 | // CHECK-NEXT: 1 | simple::B::~B() [scalar deleting] |
| 92 | // CHECK-NEXT: [this adjustment: vtordisp at -12, -8 non-virtual] |
| 93 | |
| 94 | // CHECK-LABEL: Thunks for 'simple::B::~B()' (1 entry). |
| 95 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -12, -8 non-virtual] |
| 96 | |
| 97 | // CHECK-LABEL: Thunks for 'void simple::B::f()' (1 entry). |
| 98 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -12, 0 non-virtual] |
| 99 | |
| 100 | // FIXME: The vtordisp thunk should only get emitted for a constructor |
| 101 | // if "this" leaves scope. |
| 102 | B() { use_somewhere_else(this); } |
| 103 | |
| 104 | virtual void f(); |
| 105 | // MANGLING-DAG: @"?f@B@simple@@$4PPPPPPPE@A@AEXXZ" |
| 106 | |
| 107 | // Has an implicit destructor. |
| 108 | // MANGLING-DAG: @"??_EB@simple@@$4PPPPPPPE@7AEPAXI@Z" |
| 109 | // MANGLING-DAG: @"??_EB@simple@@$4PPPPPPPM@A@AEPAXI@Z" |
| 110 | }; |
| 111 | |
| 112 | B b; |
| 113 | void use(B *obj) { obj->f(); } |
| 114 | |
| 115 | struct C : virtual V4 { |
| 116 | // CHECK-LABEL: VFTable for 'Z' in 'V4' in 'simple::C' (2 entries). |
| 117 | // CHECK-NEXT: 0 | void Z::g() |
| 118 | // CHECK-NEXT: 1 | simple::C::~C() [scalar deleting] |
| 119 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 120 | |
| 121 | // CHECK-LABEL: Thunks for 'simple::C::~C()' (1 entry). |
| 122 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, 0 non-virtual] |
| 123 | |
| 124 | // CHECK-LABEL: VFTable for 'V1' in 'V4' in 'simple::C' (2 entries). |
| 125 | // CHECK-NEXT: 0 | void simple::C::f() |
| 126 | // CHECK-NEXT: [this adjustment: vtordisp at -12, 0 non-virtual] |
| 127 | // CHECK-NEXT: 1 | simple::C::~C() [scalar deleting] |
| 128 | // CHECK-NEXT: [this adjustment: vtordisp at -12, -8 non-virtual] |
| 129 | |
| 130 | // CHECK-LABEL: Thunks for 'simple::C::~C()' (1 entry). |
| 131 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -12, -8 non-virtual] |
| 132 | |
| 133 | // CHECK-LABEL: Thunks for 'void simple::C::f()' (1 entry). |
| 134 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -12, 0 non-virtual] |
| 135 | |
| 136 | // CHECK-LABEL: VFTable for 'V2' in 'V4' in 'simple::C' (2 entries). |
| 137 | // CHECK-NEXT: 0 | void simple::C::f() |
| 138 | // CHECK-NEXT: [this adjustment: vtordisp at -16, -4 non-virtual] |
| 139 | // CHECK-NEXT: 1 | simple::C::~C() [scalar deleting] |
| 140 | // CHECK-NEXT: [this adjustment: vtordisp at -16, -12 non-virtual] |
| 141 | |
| 142 | // CHECK-LABEL: Thunks for 'simple::C::~C()' (1 entry). |
| 143 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -16, -12 non-virtual] |
| 144 | |
| 145 | // CHECK-LABEL: Thunks for 'void simple::C::f()' (1 entry). |
| 146 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -16, -4 non-virtual] |
| 147 | |
| 148 | int x; |
| 149 | virtual void f(); |
| 150 | // MANGLING-DAG: @"?f@C@simple@@$4PPPPPPPA@3AEXXZ" |
| 151 | // MANGLING-DAG: @"?f@C@simple@@$4PPPPPPPE@A@AEXXZ" |
| 152 | virtual ~C(); |
| 153 | // MANGLING-DAG: @"??_EC@simple@@$4PPPPPPPA@M@AEPAXI@Z" |
| 154 | // MANGLING-DAG: @"??_EC@simple@@$4PPPPPPPE@7AEPAXI@Z" |
| 155 | // MANGLING-DAG: @"??_EC@simple@@$4PPPPPPPM@A@AEPAXI@Z" |
| 156 | }; |
| 157 | |
| 158 | C c; |
| 159 | void use(C *obj) { obj->f(); } |
| 160 | |
| 161 | class D : B { |
| 162 | // CHECK-LABEL: VFTable for 'V2' in 'V3' in 'simple::B' in 'simple::D' (2 entries). |
| 163 | // CHECK-NEXT: 0 | void simple::B::f() |
| 164 | // CHECK-NEXT: [this adjustment: vtordisp at -12, -4 non-virtual] |
| 165 | // CHECK-NEXT: 1 | simple::D::~D() [scalar deleting] |
| 166 | // CHECK-NEXT: [this adjustment: vtordisp at -12, -8 non-virtual] |
| 167 | D(); |
| 168 | int z; |
| 169 | |
| 170 | // MANGLING-DAG: @"?f@B@simple@@$4PPPPPPPE@3AEXXZ" |
| 171 | }; |
| 172 | |
| 173 | D::D() {} |
| 174 | |
| 175 | struct E : V3 { |
| 176 | virtual void f(); |
| 177 | }; |
| 178 | |
| 179 | struct F : virtual E { |
| 180 | // CHECK-LABEL: VFTable for 'Z' in 'V3' in 'simple::E' in 'simple::F' (2 entries). |
| 181 | // CHECK-NEXT: 0 | void simple::F::g() |
| 182 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 183 | // CHECK-NEXT: 1 | simple::F::~F() [scalar deleting] |
| 184 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 185 | |
| 186 | // CHECK-LABEL: VFTable for 'V2' in 'V3' in 'simple::E' in 'simple::F' (2 entries). |
| 187 | // CHECK-NEXT: 0 | void simple::E::f() |
| 188 | // CHECK-NEXT: 1 | simple::F::~F() [scalar deleting] |
| 189 | // CHECK-NEXT: [this adjustment: vtordisp at -12, -8 non-virtual] |
| 190 | |
| 191 | F(); |
| 192 | virtual void g(); // Force a vtordisp. |
| 193 | int f; |
| 194 | |
| 195 | // MANGLING-DAG: @"?g@F@simple@@$4PPPPPPPM@A@AEXXZ"{{.*}}??_EF@simple@@$4PPPPPPPM@A@AEPAXI@Z |
| 196 | // MANGLING-DAG: ?f@E@simple@@UAEXXZ{{.*}}??_EF@simple@@$4PPPPPPPE@7AEPAXI@Z |
| 197 | }; |
| 198 | |
| 199 | F::F() {} |
| 200 | |
| 201 | struct G : F { |
| 202 | // CHECK-LABEL: VFTable for 'Z' in 'V3' in 'simple::E' in 'simple::F' in 'simple::G' (2 entries). |
| 203 | // CHECK-NEXT: 0 | void simple::F::g() |
| 204 | // CHECK-NEXT: [this adjustment: vtordisp at -4, -4 non-virtual] |
| 205 | // CHECK-NEXT: 1 | simple::G::~G() [scalar deleting] |
| 206 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 207 | |
| 208 | // CHECK-LABEL: VFTable for 'V2' in 'V3' in 'simple::E' in 'simple::F' in 'simple::G' (2 entries). |
| 209 | // CHECK-NEXT: 0 | void simple::E::f() |
| 210 | // CHECK-NEXT: 1 | simple::G::~G() [scalar deleting] |
| 211 | // CHECK-NEXT: [this adjustment: vtordisp at -12, -8 non-virtual] |
| 212 | |
| 213 | G(); |
| 214 | int g; |
| 215 | |
| 216 | // MANGLING-DAG: @"?g@F@simple@@$4PPPPPPPM@3AEXXZ"{{.*}}@"??_EG@simple@@$4PPPPPPPM@A@AEPAXI@Z" |
| 217 | // MANGLING-DAG: @"?f@E@simple@@UAEXXZ"{{.*}}@"??_EG@simple@@$4PPPPPPPE@7AEPAXI@Z" |
| 218 | }; |
| 219 | |
| 220 | G::G() {} |
| 221 | } |
| 222 | |
| 223 | namespace extended { |
| 224 | // If a virtual function requires vtordisp adjustment and the final overrider |
| 225 | // is defined in another virtual base of the most derived class, |
| 226 | // we need to know two vbase offsets. |
| 227 | // In this case, we should use the extended form of vtordisp thunks, called |
| 228 | // vtordispex thunks. |
| 229 | // |
| 230 | // vtordispex{x,y,z,w} thunk for Method@Class is something like: |
| 231 | // sub ecx, [ecx+z] // apply the vtordisp adjustment |
| 232 | // sub ecx, x // jump to the vbptr of the most derived class |
| 233 | // mov eax, [ecx] // load the vbtable address |
| 234 | // add ecx, [eax+y] // lookup the final overrider's vbase offset |
| 235 | // add ecx, w // apphy the subobject offset if needed |
| 236 | // jmp Method@Class |
| 237 | |
| 238 | struct A : virtual simple::A { |
| 239 | // CHECK-LABEL: VFTable for 'V1' in 'simple::A' in 'extended::A' (2 entries). |
| 240 | // CHECK-NEXT: 0 | void simple::A::f() |
| 241 | // CHECK-NEXT: [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 242 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 243 | // CHECK-NEXT: 1 | extended::A::~A() [scalar deleting] |
| 244 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 245 | |
| 246 | // CHECK-LABEL: Thunks for 'void simple::A::f()' (1 entry). |
| 247 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 248 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 249 | |
| 250 | // `vtordispex{8,8,4294967292,8}' |
| 251 | // MANGLING-DAG: @"?f@A@simple@@$R477PPPPPPPM@7AEXXZ" |
| 252 | |
| 253 | virtual ~A(); |
| 254 | // vtordisp{4294967292,0} |
| 255 | // MANGLING-DAG: @"??_EA@extended@@$4PPPPPPPM@A@AEPAXI@Z" |
| 256 | }; |
| 257 | |
| 258 | A a; |
| 259 | void use(A *obj) { delete obj; } |
| 260 | |
| 261 | struct B : virtual simple::A { |
| 262 | // This class has an implicit dtor. Vdtors don't require vtordispex thunks |
| 263 | // as the most derived class always has an implicit dtor, |
| 264 | // which is a final overrider. |
| 265 | |
| 266 | // CHECK-LABEL: VFTable for 'V1' in 'simple::A' in 'extended::B' (2 entries). |
| 267 | // ... |
| 268 | // CHECK: 1 | extended::B::~B() [scalar deleting] |
| 269 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 270 | |
| 271 | // CHECK-LABEL: Thunks for 'void simple::A::f()' (1 entry). |
| 272 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 273 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 274 | |
| 275 | // vtordisp{4294967292,0} |
| 276 | // MANGLING-DAG: @"??_EB@extended@@$4PPPPPPPM@A@AEPAXI@Z" |
| 277 | }; |
| 278 | |
| 279 | B b; |
| 280 | void use(B *obj) { delete obj; } |
| 281 | |
| 282 | struct C : virtual simple::A { |
| 283 | // CHECK-LABEL: VFTable for 'V1' in 'simple::A' in 'extended::C' (2 entries). |
| 284 | // CHECK-NEXT: 0 | void simple::A::f() |
| 285 | // CHECK-NEXT: [this adjustment: vtordisp at -4, vbptr at 12 to the left, |
| 286 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 287 | |
| 288 | // CHECK-LABEL: Thunks for 'void simple::A::f()' (1 entry). |
| 289 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, vbptr at 12 to the left, |
| 290 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 291 | |
| 292 | // `vtordispex{12,8,4294967292,8}' |
| 293 | // MANGLING-DAG: @"?f@A@simple@@$R4M@7PPPPPPPM@7AEXXZ" |
| 294 | int x; |
| 295 | virtual ~C(); |
| 296 | // MANGLING-DAG: @"??_EC@extended@@$4PPPPPPPM@A@AEPAXI@Z" |
| 297 | }; |
| 298 | |
| 299 | C c; |
| 300 | void use(C *obj) { delete obj; } |
| 301 | |
| 302 | struct D : virtual V2 { |
| 303 | virtual void f(); |
| 304 | virtual ~D(); |
| 305 | int x; |
| 306 | }; |
| 307 | |
| 308 | struct E : virtual D { |
| 309 | // CHECK-LABEL: VFTable for 'V2' in 'extended::D' in 'extended::E' (2 entries). |
| 310 | // CHECK-NEXT: 0 | void extended::D::f() |
| 311 | // CHECK-NEXT: [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 312 | // CHECK-NEXT: vboffset at 8 in the vbtable, 12 non-virtual] |
| 313 | |
| 314 | // CHECK-LABEL: Thunks for 'void extended::D::f()' (1 entry). |
| 315 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 316 | // CHECK-NEXT: vboffset at 8 in the vbtable, 12 non-virtual] |
| 317 | |
| 318 | // `vtordispex{8,8,4294967292,12}' |
| 319 | // MANGLING-DAG: @"?f@D@extended@@$R477PPPPPPPM@M@AEXXZ" |
| 320 | |
| 321 | virtual ~E(); |
| 322 | // MANGLING-DAG: @"??_EE@extended@@$4PPPPPPPM@A@AEPAXI@Z" |
| 323 | }; |
| 324 | |
| 325 | E e; |
| 326 | void use(E *obj) { delete obj; } |
| 327 | |
| 328 | struct F : virtual Z, virtual D { |
| 329 | // CHECK-LABEL: VFTable for 'V2' in 'extended::D' in 'extended::F' (2 entries). |
| 330 | // CHECK-NEXT: 0 | void extended::D::f() |
| 331 | // CHECK-NEXT: [this adjustment: vtordisp at -4, vbptr at 20 to the left, |
| 332 | // CHECK-NEXT: vboffset at 12 in the vbtable, 12 non-virtual] |
| 333 | |
| 334 | // CHECK-LABEL: Thunks for 'void extended::D::f()' (1 entry). |
| 335 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, vbptr at 20 to the left, |
| 336 | // CHECK-NEXT: vboffset at 12 in the vbtable, 12 non-virtual] |
| 337 | |
| 338 | // `vtordispex{20,12,4294967292,12}' |
| 339 | // MANGLING-DAG: @"?f@D@extended@@$R4BE@M@PPPPPPPM@M@AEXXZ" |
| 340 | int x; |
| 341 | virtual ~F(); |
| 342 | // MANGLING-DAG: @"??_EF@extended@@$4PPPPPPPM@M@AEPAXI@Z" |
| 343 | }; |
| 344 | |
| 345 | F f; |
| 346 | void use(F *obj) { delete obj; } |
| 347 | |
| 348 | struct G : virtual simple::A { |
| 349 | // CHECK-LABEL: VFTable for 'extended::G' (1 entry). |
| 350 | // CHECK-NEXT: 0 | void extended::G::g() |
| 351 | |
| 352 | // CHECK-LABEL: VFTable for 'V1' in 'simple::A' in 'extended::G' (2 entries). |
| 353 | // CHECK-NEXT: 0 | void simple::A::f() |
| 354 | // CHECK-NEXT: [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 355 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 356 | // CHECK-NEXT: 1 | extended::G::~G() [scalar deleting] |
| 357 | // CHECK-NEXT: [this adjustment: vtordisp at -4, 0 non-virtual] |
| 358 | |
| 359 | // CHECK-LABEL: Thunks for 'void simple::A::f()' (1 entry). |
| 360 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 361 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 362 | |
| 363 | // Emits a G's own vfptr, thus moving the vbptr in the layout. |
| 364 | virtual void g(); |
| 365 | |
| 366 | virtual ~G(); |
| 367 | // vtordisp{4294967292,0} |
| 368 | // MANGLING-DAG: @"??_EG@extended@@$4PPPPPPPM@A@AEPAXI@Z" |
| 369 | }; |
| 370 | |
| 371 | G g; |
| 372 | void use(G *obj) { obj->g(); } |
| 373 | |
| 374 | struct H : Z, A { |
| 375 | // CHECK-LABEL: VFTable for 'Z' in 'extended::H' (2 entries). |
| 376 | // CHECK-NEXT: 0 | void Z::g() |
| 377 | // CHECK-NEXT: 1 | extended::H::~H() [scalar deleting] |
| 378 | |
| 379 | // CHECK-LABEL: VFTable for 'V1' in 'simple::A' in 'extended::A' in 'extended::H' (2 entries). |
| 380 | // CHECK-NEXT: 0 | void simple::A::f() |
| 381 | // CHECK-NEXT: [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 382 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 383 | |
| 384 | // CHECK-LABEL: Thunks for 'void simple::A::f()' (1 entry). |
| 385 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -4, vbptr at 8 to the left, |
| 386 | // CHECK-NEXT: vboffset at 8 in the vbtable, 8 non-virtual] |
| 387 | |
| 388 | // MANGLING-DAG: @"?f@A@simple@@$R477PPPPPPPM@7AEXXZ" |
| 389 | // MANGLING-DAG: @"??_EH@extended@@$4PPPPPPPM@BA@AEPAXI@Z" |
| 390 | }; |
| 391 | |
| 392 | H h; |
| 393 | void use(H *obj) { delete obj; } |
| 394 | } |
| 395 | |
| 396 | namespace pr17738 { |
| 397 | // These classes should have vtordispex thunks but MSVS CL miscompiles them. |
| 398 | // Just do the right thing. |
| 399 | |
| 400 | struct A : virtual simple::B { |
| 401 | // CHECK-LABEL: VFTable for 'V2' in 'V3' in 'simple::B' in 'pr17738::A' (2 entries). |
| 402 | // CHECK-NEXT: 0 | void simple::B::f() |
| 403 | // CHECK-NEXT: [this adjustment: vtordisp at -12, vbptr at 20 to the left, |
| 404 | // CHECK-NEXT: vboffset at 8 in the vbtable, 16 non-virtual] |
| 405 | |
| 406 | // CHECK-LABEL: Thunks for 'void simple::B::f()' (1 entry). |
| 407 | // CHECK-NEXT: 0 | [this adjustment: vtordisp at -12, vbptr at 20 to the left, |
| 408 | // CHECK-NEXT: vboffset at 8 in the vbtable, 16 non-virtual] |
| 409 | |
| 410 | // MANGLING-DAG: @"?f@B@simple@@$R4BE@7PPPPPPPE@BA@AEXXZ" |
| 411 | int a; |
| 412 | virtual ~A(); |
| 413 | }; |
| 414 | |
| 415 | A a; |
| 416 | void use(A *obj) { delete obj; } |
| 417 | } |
| 418 | |
| 419 | namespace pr19408 { |
| 420 | // In this test, the vptr used to vcall D::f() is located in the A vbase. |
| 421 | // The offset of A in different in C and D, so the D vtordisp thunk should |
| 422 | // adjust "this" so C::f gets the right value. |
| 423 | struct A { |
| 424 | A(); |
| 425 | virtual void f(); |
| 426 | int a; |
| 427 | }; |
| 428 | |
| 429 | struct B : virtual A { |
| 430 | B(); |
| 431 | int b; |
| 432 | }; |
| 433 | |
| 434 | struct C : B { |
| 435 | C(); |
| 436 | virtual void f(); |
| 437 | int c; |
| 438 | }; |
| 439 | |
| 440 | struct D : C { |
| 441 | // CHECK-LABEL: VFTable for 'pr19408::A' in 'pr19408::B' in 'pr19408::C' in 'pr19408::D' (1 entry). |
| 442 | // CHECK-NEXT: 0 | void pr19408::C::f() |
| 443 | // CHECK-NEXT: [this adjustment: vtordisp at -4, -4 non-virtual] |
| 444 | |
| 445 | // MANGLING-DAG: @"?f@C@pr19408@@$4PPPPPPPM@3AEXXZ" |
| 446 | D(); |
| 447 | int d; |
| 448 | }; |
| 449 | |
| 450 | D::D() {} |
| 451 | } |
| 452 | |
| 453 | namespace access { |
| 454 | struct A { |
| 455 | virtual ~A(); |
| 456 | protected: |
| 457 | virtual void prot(); |
| 458 | private: |
| 459 | virtual void priv(); |
| 460 | }; |
| 461 | |
| 462 | struct B : virtual A { |
| 463 | virtual ~B(); |
| 464 | protected: |
| 465 | virtual void prot(); |
| 466 | // MANGLING-DAG: @"?prot@B@access@@$2PPPPPPPM@A@AEXXZ" |
| 467 | private: |
| 468 | virtual void priv(); |
| 469 | // MANGLING-DAG: @"?priv@B@access@@$0PPPPPPPM@A@AEXXZ" |
| 470 | }; |
| 471 | |
| 472 | B b; |
| 473 | |
| 474 | struct C : virtual B { |
| 475 | virtual ~C(); |
| 476 | |
| 477 | // MANGLING-DAG: @"?prot@B@access@@$R277PPPPPPPM@7AEXXZ" |
| 478 | // MANGLING-DAG: @"?priv@B@access@@$R077PPPPPPPM@7AEXXZ" |
| 479 | }; |
| 480 | |
| 481 | C c; |
| 482 | } |
| 483 | |
| 484 | namespace pr19505 { |
| 485 | struct A { |
| 486 | virtual void f(); |
| 487 | virtual void z(); |
| 488 | }; |
| 489 | |
| 490 | struct B : A { |
| 491 | virtual void f(); |
| 492 | }; |
| 493 | |
| 494 | struct C : A, B { |
| 495 | virtual void g(); |
| 496 | }; |
| 497 | |
| 498 | struct X : B, virtual C { |
| 499 | X() {} |
| 500 | virtual void g(); |
| 501 | |
| 502 | // CHECK-LABEL: VFTable for 'pr19505::A' in 'pr19505::B' in 'pr19505::C' in 'pr19505::X' (2 entries). |
| 503 | // CHECK-NEXT: 0 | void pr19505::B::f() |
| 504 | // CHECK-NEXT: 1 | void pr19505::A::z() |
| 505 | |
| 506 | // MANGLING-DAG: @"??_7X@pr19505@@6BB@1@@" = {{.*}}@"?f@B@pr19505@@UAEXXZ" |
| 507 | } x; |
| 508 | |
| 509 | void build_vftable(X *obj) { obj->g(); } |
| 510 | } |
| 511 | |
| 512 | namespace pr19506 { |
| 513 | struct A { |
| 514 | virtual void f(); |
| 515 | virtual void g(); |
| 516 | }; |
| 517 | |
| 518 | struct B : A { |
| 519 | virtual void f(); |
| 520 | }; |
| 521 | |
| 522 | struct C : B {}; |
| 523 | |
| 524 | struct X : C, virtual B { |
| 525 | virtual void g(); |
| 526 | X() {} |
| 527 | |
| 528 | // CHECK-LABEL: VFTable for 'pr19506::A' in 'pr19506::B' in 'pr19506::X' (2 entries). |
| 529 | // CHECK-NEXT: 0 | void pr19506::B::f() |
| 530 | // CHECK-NEXT: 1 | void pr19506::X::g() |
| 531 | // CHECK-NEXT: [this adjustment: vtordisp at -4, -12 non-virtual] |
| 532 | |
| 533 | // MANGLING-DAG: @"??_7X@pr19506@@6BB@1@@" = {{.*}}@"?f@B@pr19506@@UAEXXZ" |
| 534 | } x; |
| 535 | |
| 536 | void build_vftable(X *obj) { obj->g(); } |
| 537 | } |
| 538 | |
| 539 | namespace pr19519 { |
| 540 | // VS2013 CL miscompiles this, just make sure we don't regress. |
| 541 | |
| 542 | struct A { |
| 543 | virtual void f(); |
| 544 | virtual void g(); |
| 545 | }; |
| 546 | |
| 547 | struct B : virtual A { |
| 548 | virtual void f(); |
| 549 | B(); |
| 550 | }; |
| 551 | |
| 552 | struct C : virtual A { |
| 553 | virtual void g(); |
| 554 | }; |
| 555 | |
| 556 | struct X : B, C { |
| 557 | X(); |
| 558 | |
| 559 | // CHECK-LABEL: VFTable for 'pr19519::A' in 'pr19519::B' in 'pr19519::X' (2 entries). |
| 560 | // CHECK-NEXT: 0 | void pr19519::B::f() |
| 561 | // CHECK-NEXT: [this adjustment: vtordisp at -4, -4 non-virtual] |
| 562 | // CHECK-NEXT: 1 | void pr19519::C::g() |
| 563 | // CHECK-NEXT: [this adjustment: vtordisp at -4, -4 non-virtual] |
| 564 | |
| 565 | // MANGLING-DAG: @"??_7X@pr19519@@6B@" = {{.*}}@"?g@C@pr19519@@$4PPPPPPPM@3AEXXZ" |
| 566 | }; |
| 567 | |
| 568 | X::X() {} |
| 569 | } |
| 570 | |