1 // RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o - -mconstructor-aliases -fcxx-exceptions -fexceptions -O1 -disable-llvm-optzns > %t 2 // RUN: FileCheck --check-prefix=CHECK1 --input-file=%t %s 3 // RUN: FileCheck --check-prefix=CHECK2 --input-file=%t %s 4 // RUN: FileCheck --check-prefix=CHECK3 --input-file=%t %s 5 // RUN: FileCheck --check-prefix=CHECK4 --input-file=%t %s 6 // RUN: FileCheck --check-prefix=CHECK5 --input-file=%t %s 7 // RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o - -fcxx-exceptions -fexceptions -O1 -disable-llvm-optzns -std=c++11 > %t2 8 // RUN: FileCheck --check-prefix=CHECK6 --input-file=%t2 %s 9 // REQUIRES: asserts 10 11 struct A { 12 int a; 13 14 ~A(); 15 }; 16 17 // Base with non-trivial destructor 18 struct B : A { 19 ~B(); 20 }; 21 22 B::~B() { } 23 24 // Field with non-trivial destructor 25 struct C { 26 A a; 27 28 ~C(); 29 }; 30 31 C::~C() { } 32 33 namespace PR7526 { 34 extern void foo(); 35 struct allocator { 36 ~allocator() throw(); 37 }; 38 39 struct allocator_derived : allocator { }; 40 41 // CHECK1-LABEL: define void @_ZN6PR75263fooEv() 42 // CHECK1: call void {{.*}} @_ZN6PR75269allocatorD2Ev 43 44 // CHECK1-LABEL: define void @_ZN6PR75269allocatorD2Ev(%"struct.PR7526::allocator"* %this) unnamed_addr 45 // CHECK1: call void @__cxa_call_unexpected 46 allocator::~allocator() throw() { foo(); } 47 48 void foo() { 49 allocator_derived ad; 50 } 51 } 52 53 // PR5084 54 template<typename T> 55 class A1 { 56 ~A1(); 57 }; 58 59 template<> A1<char>::~A1(); 60 61 // PR5529 62 namespace PR5529 { 63 struct A { 64 ~A(); 65 }; 66 67 A::~A() { } 68 struct B : A { 69 virtual ~B(); 70 }; 71 72 B::~B() {} 73 } 74 75 // FIXME: there's a known problem in the codegen here where, if one 76 // destructor throws, the remaining destructors aren't run. Fix it, 77 // then make this code check for it. 78 namespace test0 { 79 void foo(); 80 struct VBase { ~VBase(); }; 81 struct Base { ~Base(); }; 82 struct Member { ~Member(); }; 83 84 struct A : Base { 85 Member M; 86 ~A(); 87 }; 88 89 // The function-try-block won't suppress -mconstructor-aliases here. 90 A::~A() try { } catch (int i) {} 91 92 // complete destructor alias tested above 93 94 // CHECK2-LABEL: @_ZN5test01AD1Ev = alias {{.*}} @_ZN5test01AD2Ev 95 // CHECK2-LABEL: define void @_ZN5test01AD2Ev(%"struct.test0::A"* %this) unnamed_addr 96 // CHECK2: invoke void @_ZN5test06MemberD1Ev 97 // CHECK2: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 98 // CHECK2: invoke void @_ZN5test04BaseD2Ev 99 // CHECK2: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 100 101 struct B : Base, virtual VBase { 102 Member M; 103 ~B(); 104 }; 105 B::~B() try { } catch (int i) {} 106 // It will suppress the delegation optimization here, though. 107 108 // CHECK2-LABEL: define void @_ZN5test01BD2Ev(%"struct.test0::B"* %this, i8** %vtt) unnamed_addr 109 // CHECK2: invoke void @_ZN5test06MemberD1Ev 110 // CHECK2: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 111 // CHECK2: invoke void @_ZN5test04BaseD2Ev 112 // CHECK2: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 113 114 // CHECK2-LABEL: define void @_ZN5test01BD1Ev(%"struct.test0::B"* %this) unnamed_addr 115 // CHECK2: invoke void @_ZN5test06MemberD1Ev 116 // CHECK2: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 117 // CHECK2: invoke void @_ZN5test04BaseD2Ev 118 // CHECK2: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 119 // CHECK2: invoke void @_ZN5test05VBaseD2Ev 120 // CHECK2: unwind label [[VBASE_UNWIND:%[a-zA-Z0-9.]+]] 121 } 122 123 // Test base-class aliasing. 124 namespace test1 { 125 struct A { ~A(); char ***m; }; // non-trivial destructor 126 struct B { ~B(); }; // non-trivial destructor 127 struct Empty { }; // trivial destructor, empty 128 struct NonEmpty { int x; }; // trivial destructor, non-empty 129 130 // There must be a definition in this translation unit for the alias 131 // optimization to apply. 132 A::~A() { delete m; } 133 134 struct M : A { ~M(); }; 135 M::~M() {} 136 // CHECK3: @_ZN5test11MD2Ev = alias {{.*}} @_ZN5test11AD2Ev 137 138 struct N : A, Empty { ~N(); }; 139 N::~N() {} 140 // CHECK3: @_ZN5test11ND2Ev = alias {{.*}} @_ZN5test11AD2Ev 141 142 struct O : Empty, A { ~O(); }; 143 O::~O() {} 144 // CHECK3: @_ZN5test11OD2Ev = alias {{.*}} @_ZN5test11AD2Ev 145 146 struct P : NonEmpty, A { ~P(); }; 147 P::~P() {} // CHECK3-LABEL: define void @_ZN5test11PD2Ev(%"struct.test1::P"* %this) unnamed_addr 148 149 struct Q : A, B { ~Q(); }; 150 Q::~Q() {} // CHECK3-LABEL: define void @_ZN5test11QD2Ev(%"struct.test1::Q"* %this) unnamed_addr 151 152 struct R : A { ~R(); }; 153 R::~R() { A a; } // CHECK3-LABEL: define void @_ZN5test11RD2Ev(%"struct.test1::R"* %this) unnamed_addr 154 155 struct S : A { ~S(); int x; }; 156 S::~S() {} 157 // CHECK4: @_ZN5test11SD2Ev = alias {{.*}}, bitcast {{.*}} @_ZN5test11AD2Ev 158 159 struct T : A { ~T(); B x; }; 160 T::~T() {} // CHECK4-LABEL: define void @_ZN5test11TD2Ev(%"struct.test1::T"* %this) unnamed_addr 161 162 // The VTT parameter prevents this. We could still make this work 163 // for calling conventions that are safe against extra parameters. 164 struct U : A, virtual B { ~U(); }; 165 U::~U() {} // CHECK4-LABEL: define void @_ZN5test11UD2Ev(%"struct.test1::U"* %this, i8** %vtt) unnamed_addr 166 } 167 168 // PR6471 169 namespace test2 { 170 struct A { ~A(); char ***m; }; 171 struct B : A { ~B(); }; 172 173 B::~B() {} 174 // CHECK4-LABEL: define void @_ZN5test21BD2Ev(%"struct.test2::B"* %this) unnamed_addr 175 // CHECK4: call void @_ZN5test21AD2Ev 176 } 177 178 // PR7142 179 namespace test3 { 180 struct A { virtual ~A(); }; 181 struct B { virtual ~B(); }; 182 namespace { // internal linkage => deferred 183 struct C : A, B {}; // ~B() in D requires a this-adjustment thunk 184 struct D : C {}; // D::~D() is an alias to C::~C() 185 } 186 187 void test() { 188 new D; // Force emission of D's vtable 189 } 190 191 // CHECK4-LABEL: define internal void @_ZN5test312_GLOBAL__N_11CD2Ev(%"struct.test3::(anonymous namespace)::C"* %this) unnamed_addr 192 // CHECK4: invoke void @_ZN5test31BD2Ev( 193 // CHECK4: call void @_ZN5test31AD2Ev( 194 // CHECK4: ret void 195 196 // CHECK4-LABEL: define internal void @_ZN5test312_GLOBAL__N_11DD0Ev(%"struct.test3::(anonymous namespace)::D"* %this) unnamed_addr 197 // CHECK4-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 198 // CHECK4: invoke void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 199 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW:#[0-9]+]] 200 // CHECK4: ret void 201 // CHECK4: landingpad { i8*, i32 } 202 // CHECK4-NEXT: cleanup 203 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 204 // CHECK4: resume { i8*, i32 } 205 206 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD1Ev( 207 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 208 // CHECK4: call void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 209 // CHECK4: ret void 210 211 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD0Ev( 212 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 213 // CHECK4: call void @_ZN5test312_GLOBAL__N_11DD0Ev( 214 // CHECK4: ret void 215 216 // CHECK4-LABEL: define internal void @_ZN5test312_GLOBAL__N_11CD0Ev(%"struct.test3::(anonymous namespace)::C"* %this) unnamed_addr 217 // CHECK4-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 218 // CHECK4: invoke void @_ZN5test312_GLOBAL__N_11CD2Ev( 219 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 220 // CHECK4: ret void 221 // CHECK4: landingpad { i8*, i32 } 222 // CHECK4-NEXT: cleanup 223 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 224 // CHECK4: resume { i8*, i32 } 225 226 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD1Ev( 227 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 228 // CHECK4: call void @_ZN5test312_GLOBAL__N_11CD2Ev( 229 // CHECK4: ret void 230 231 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD0Ev( 232 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 233 // CHECK4: call void @_ZN5test312_GLOBAL__N_11CD0Ev( 234 // CHECK4: ret void 235 236 // CHECK4-LABEL: declare void @_ZN5test31BD2Ev( 237 // CHECK4-LABEL: declare void @_ZN5test31AD2Ev( 238 239 // CHECK4: attributes [[NUW]] = {{[{].*}} nounwind {{.*[}]}} 240 } 241 242 namespace test4 { 243 struct A { ~A(); }; 244 245 // CHECK5-LABEL: define void @_ZN5test43fooEv() 246 // CHECK5: call void @_ZN5test41AD1Ev 247 // CHECK5: ret void 248 void foo() { 249 { 250 A a; 251 goto failure; 252 } 253 254 failure: 255 return; 256 } 257 258 // CHECK5-LABEL: define void @_ZN5test43barEi( 259 // CHECK5: [[X:%.*]] = alloca i32 260 // CHECK5-NEXT: [[A:%.*]] = alloca 261 // CHECK5: br label 262 // CHECK5: [[TMP:%.*]] = load i32, i32* [[X]] 263 // CHECK5-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP]], 0 264 // CHECK5-NEXT: br i1 265 // CHECK5: call void @_ZN5test41AD1Ev( 266 // CHECK5: br label 267 // CHECK5: [[TMP:%.*]] = load i32, i32* [[X]] 268 // CHECK5: [[TMP2:%.*]] = add nsw i32 [[TMP]], -1 269 // CHECK5: store i32 [[TMP2]], i32* [[X]] 270 // CHECK5: br label 271 // CHECK5: ret void 272 void bar(int x) { 273 for (A a; x; ) { 274 x--; 275 } 276 } 277 } 278 279 // PR7575 280 namespace test5 { 281 struct A { ~A(); }; 282 283 // CHECK5-LABEL: define void @_ZN5test53fooEv() 284 // CHECK5: [[ELEMS:%.*]] = alloca [5 x [[A:%.*]]], align 285 // CHECK5-NEXT: [[EXN:%.*]] = alloca i8* 286 // CHECK5-NEXT: [[SEL:%.*]] = alloca i32 287 // CHECK5-NEXT: [[PELEMS:%.*]] = bitcast [5 x [[A]]]* [[ELEMS]] to i8* 288 // CHECK5-NEXT: call void @llvm.lifetime.start(i64 5, i8* [[PELEMS]]) 289 // CHECK5-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [5 x [[A]]], [5 x [[A]]]* [[ELEMS]], i32 0, i32 0 290 // CHECK5-NEXT: [[END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[BEGIN]], i64 5 291 // CHECK5-NEXT: br label 292 // CHECK5: [[POST:%.*]] = phi [[A]]* [ [[END]], {{%.*}} ], [ [[ELT:%.*]], {{%.*}} ] 293 // CHECK5-NEXT: [[ELT]] = getelementptr inbounds [[A]], [[A]]* [[POST]], i64 -1 294 // CHECK5-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[ELT]]) 295 // CHECK5: [[T0:%.*]] = icmp eq [[A]]* [[ELT]], [[BEGIN]] 296 // CHECK5-NEXT: br i1 [[T0]], 297 // CHECK5: call void @llvm.lifetime.end 298 // CHECK5-NEXT: ret void 299 // lpad 300 // CHECK5: [[EMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[ELT]] 301 // CHECK5-NEXT: br i1 [[EMPTY]] 302 // CHECK5: [[AFTER:%.*]] = phi [[A]]* [ [[ELT]], {{%.*}} ], [ [[CUR:%.*]], {{%.*}} ] 303 // CHECK5-NEXT: [[CUR:%.*]] = getelementptr inbounds [[A]], [[A]]* [[AFTER]], i64 -1 304 // CHECK5-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[CUR]]) 305 // CHECK5: [[DONE:%.*]] = icmp eq [[A]]* [[CUR]], [[BEGIN]] 306 // CHECK5-NEXT: br i1 [[DONE]], 307 void foo() { 308 A elems[5]; 309 } 310 } 311 312 namespace test6 { 313 void opaque(); 314 315 struct A { ~A(); }; 316 template <unsigned> struct B { B(); ~B(); int _; }; 317 struct C : B<0>, B<1>, virtual B<2>, virtual B<3> { 318 A x, y, z; 319 320 C(); 321 ~C(); 322 }; 323 324 C::C() { opaque(); } 325 // CHECK5-LABEL: define void @_ZN5test61CC1Ev(%"struct.test6::C"* %this) unnamed_addr 326 // CHECK5: call void @_ZN5test61BILj2EEC2Ev 327 // CHECK5: invoke void @_ZN5test61BILj3EEC2Ev 328 // CHECK5: invoke void @_ZN5test61BILj0EEC2Ev 329 // CHECK5: invoke void @_ZN5test61BILj1EEC2Ev 330 // CHECK5: invoke void @_ZN5test66opaqueEv 331 // CHECK5: ret void 332 // FIXME: way too much EH cleanup code follows 333 334 C::~C() { opaque(); } 335 // CHECK5-LABEL: define void @_ZN5test61CD2Ev(%"struct.test6::C"* %this, i8** %vtt) unnamed_addr 336 // CHECK5: invoke void @_ZN5test66opaqueEv 337 // CHECK5: invoke void @_ZN5test61AD1Ev 338 // CHECK5: invoke void @_ZN5test61AD1Ev 339 // CHECK5: invoke void @_ZN5test61AD1Ev 340 // CHECK5: invoke void @_ZN5test61BILj1EED2Ev 341 // CHECK5: call void @_ZN5test61BILj0EED2Ev 342 // CHECK5: ret void 343 // CHECK5: invoke void @_ZN5test61AD1Ev 344 // CHECK5: invoke void @_ZN5test61AD1Ev 345 // CHECK5: invoke void @_ZN5test61AD1Ev 346 // CHECK5: invoke void @_ZN5test61BILj1EED2Ev 347 // CHECK5: invoke void @_ZN5test61BILj0EED2Ev 348 349 // CHECK5-LABEL: define void @_ZN5test61CD1Ev(%"struct.test6::C"* %this) unnamed_addr 350 // CHECK5: invoke void @_ZN5test61CD2Ev 351 // CHECK5: invoke void @_ZN5test61BILj3EED2Ev 352 // CHECK5: call void @_ZN5test61BILj2EED2Ev 353 // CHECK5: ret void 354 // CHECK5: invoke void @_ZN5test61BILj3EED2Ev 355 // CHECK5: invoke void @_ZN5test61BILj2EED2Ev 356 } 357 358 // PR 9197 359 namespace test7 { 360 struct D { ~D(); }; 361 362 struct A { ~A(); }; 363 A::~A() { } 364 365 struct B : public A { 366 ~B(); 367 D arr[1]; 368 }; 369 370 // Verify that this doesn't get emitted as an alias 371 // CHECK5-LABEL: define void @_ZN5test71BD2Ev( 372 // CHECK5: invoke void @_ZN5test71DD1Ev( 373 // CHECK5: call void @_ZN5test71AD2Ev( 374 B::~B() {} 375 } 376 377 // PR10467 378 namespace test8 { 379 struct A { A(); ~A(); }; 380 381 void die() __attribute__((noreturn)); 382 void test() { 383 A x; 384 while (1) { 385 A y; 386 goto l; 387 } 388 l: die(); 389 } 390 391 // CHECK5-LABEL: define void @_ZN5test84testEv() 392 // CHECK5: [[X:%.*]] = alloca [[A:%.*]], align 1 393 // CHECK5-NEXT: [[Y:%.*]] = alloca [[A:%.*]], align 1 394 // CHECK5: call void @_ZN5test81AC1Ev([[A]]* [[X]]) 395 // CHECK5-NEXT: br label 396 // CHECK5: invoke void @_ZN5test81AC1Ev([[A]]* [[Y]]) 397 // CHECK5: invoke void @_ZN5test81AD1Ev([[A]]* [[Y]]) 398 // CHECK5-NOT: switch 399 // CHECK5: invoke void @_ZN5test83dieEv() 400 // CHECK5: unreachable 401 } 402 403 // PR12710 404 namespace test9 { 405 struct ArgType { 406 ~ArgType(); 407 }; 408 template<typename T> 409 void f1(const ArgType& = ArgType()); 410 void f2(); 411 void bar() { 412 f1<int>(); 413 f2(); 414 } 415 // CHECK5: call void @_ZN5test97ArgTypeD1Ev(%"struct.test9::ArgType"* % 416 // CHECK5: call void @_ZN5test92f2Ev() 417 } 418 419 namespace test10 { 420 // We used to crash trying to replace _ZN6test106OptionD1Ev with 421 // _ZN6test106OptionD2Ev twice. 422 struct Option { 423 virtual ~Option() {} 424 }; 425 template <class DataType> class opt : public Option {}; 426 template class opt<int>; 427 // CHECK5-LABEL: define zeroext i1 @_ZN6test1016handleOccurrenceEv( 428 bool handleOccurrence() { 429 // CHECK5: call void @_ZN6test106OptionD2Ev( 430 Option x; 431 return true; 432 } 433 } 434 435 #if __cplusplus >= 201103L 436 namespace test11 { 437 438 // Check that lifetime.end is emitted in the landing pad. 439 440 // CHECK6-LABEL: define void @_ZN6test1115testLifetimeEndEi( 441 // CHECK6: entry: 442 // CHECK6: [[T1:%[a-z0-9]+]] = alloca %"struct.test11::S1" 443 // CHECK6: [[T2:%[a-z0-9]+]] = alloca %"struct.test11::S1" 444 // CHECK6: [[T3:%[a-z0-9]+]] = alloca %"struct.test11::S1" 445 446 // CHECK6: {{^}}invoke.cont 447 // CHECK6: call void @_ZN6test112S1D1Ev(%"struct.test11::S1"* [[T1]]) 448 // CHECK6: [[BC1:%[a-z0-9]+]] = bitcast %"struct.test11::S1"* [[T1]] to i8* 449 // CHECK6: call void @llvm.lifetime.end(i64 32, i8* [[BC1]]) 450 // CHECK6: {{^}}lpad 451 // CHECK6: call void @_ZN6test112S1D1Ev(%"struct.test11::S1"* [[T1]]) 452 // CHECK6: [[BC2:%[a-z0-9]+]] = bitcast %"struct.test11::S1"* [[T1]] to i8* 453 // CHECK6: call void @llvm.lifetime.end(i64 32, i8* [[BC2]]) 454 455 // CHECK6: {{^}}invoke.cont 456 // CHECK6: call void @_ZN6test112S1D1Ev(%"struct.test11::S1"* [[T2]]) 457 // CHECK6: [[BC3:%[a-z0-9]+]] = bitcast %"struct.test11::S1"* [[T2]] to i8* 458 // CHECK6: call void @llvm.lifetime.end(i64 32, i8* [[BC3]]) 459 // CHECK6: {{^}}lpad 460 // CHECK6: call void @_ZN6test112S1D1Ev(%"struct.test11::S1"* [[T2]]) 461 // CHECK6: [[BC4:%[a-z0-9]+]] = bitcast %"struct.test11::S1"* [[T2]] to i8* 462 // CHECK6: call void @llvm.lifetime.end(i64 32, i8* [[BC4]]) 463 464 // CHECK6: {{^}}invoke.cont 465 // CHECK6: call void @_ZN6test112S1D1Ev(%"struct.test11::S1"* [[T3]]) 466 // CHECK6: [[BC5:%[a-z0-9]+]] = bitcast %"struct.test11::S1"* [[T3]] to i8* 467 // CHECK6: call void @llvm.lifetime.end(i64 32, i8* [[BC5]]) 468 // CHECK6: {{^}}lpad 469 // CHECK6: call void @_ZN6test112S1D1Ev(%"struct.test11::S1"* [[T3]]) 470 // CHECK6: [[BC6:%[a-z0-9]+]] = bitcast %"struct.test11::S1"* [[T3]] to i8* 471 // CHECK6: call void @llvm.lifetime.end(i64 32, i8* [[BC6]]) 472 473 struct S1 { 474 ~S1(); 475 int a[8]; 476 }; 477 478 void func1(S1 &) noexcept(false); 479 480 void testLifetimeEnd(int n) { 481 if (n < 10) { 482 S1 t1; 483 func1(t1); 484 } else if (n < 100) { 485 S1 t2; 486 func1(t2); 487 } else if (n < 1000) { 488 S1 t3; 489 func1(t3); 490 } 491 } 492 493 } 494 #endif 495