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 8 struct A { 9 int a; 10 11 ~A(); 12 }; 13 14 // Base with non-trivial destructor 15 struct B : A { 16 ~B(); 17 }; 18 ~B()19 B::~B() { } 20 21 // Field with non-trivial destructor 22 struct C { 23 A a; 24 25 ~C(); 26 }; 27 ~C()28 C::~C() { } 29 30 namespace PR7526 { 31 extern void foo(); 32 struct allocator { 33 ~allocator() throw(); 34 }; 35 36 struct allocator_derived : allocator { }; 37 38 // CHECK1-LABEL: define void @_ZN6PR75263fooEv() 39 // CHECK1: call void {{.*}} @_ZN6PR75269allocatorD2Ev 40 41 // CHECK1-LABEL: define void @_ZN6PR75269allocatorD2Ev(%"struct.PR7526::allocator"* %this) unnamed_addr 42 // CHECK1: call void @__cxa_call_unexpected ~allocator()43 allocator::~allocator() throw() { foo(); } 44 foo()45 void foo() { 46 allocator_derived ad; 47 } 48 } 49 50 // PR5084 51 template<typename T> 52 class A1 { 53 ~A1(); 54 }; 55 56 template<> A1<char>::~A1(); 57 58 // PR5529 59 namespace PR5529 { 60 struct A { 61 ~A(); 62 }; 63 ~A()64 A::~A() { } 65 struct B : A { 66 virtual ~B(); 67 }; 68 ~B()69 B::~B() {} 70 } 71 72 // FIXME: there's a known problem in the codegen here where, if one 73 // destructor throws, the remaining destructors aren't run. Fix it, 74 // then make this code check for it. 75 namespace test0 { 76 void foo(); 77 struct VBase { ~VBase(); }; 78 struct Base { ~Base(); }; 79 struct Member { ~Member(); }; 80 81 struct A : Base { 82 Member M; 83 ~A(); 84 }; 85 86 // The function-try-block won't suppress -mconstructor-aliases here. ~A()87 A::~A() try { } catch (int i) {} 88 89 // complete destructor alias tested above 90 91 // CHECK2-LABEL: @_ZN5test01AD1Ev = alias {{.*}} @_ZN5test01AD2Ev 92 // CHECK2-LABEL: define void @_ZN5test01AD2Ev(%"struct.test0::A"* %this) unnamed_addr 93 // CHECK2: invoke void @_ZN5test06MemberD1Ev 94 // CHECK2: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 95 // CHECK2: invoke void @_ZN5test04BaseD2Ev 96 // CHECK2: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 97 98 struct B : Base, virtual VBase { 99 Member M; 100 ~B(); 101 }; ~B()102 B::~B() try { } catch (int i) {} 103 // It will suppress the delegation optimization here, though. 104 105 // CHECK2-LABEL: define void @_ZN5test01BD2Ev(%"struct.test0::B"* %this, i8** %vtt) unnamed_addr 106 // CHECK2: invoke void @_ZN5test06MemberD1Ev 107 // CHECK2: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 108 // CHECK2: invoke void @_ZN5test04BaseD2Ev 109 // CHECK2: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 110 111 // CHECK2-LABEL: define void @_ZN5test01BD1Ev(%"struct.test0::B"* %this) unnamed_addr 112 // CHECK2: invoke void @_ZN5test06MemberD1Ev 113 // CHECK2: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 114 // CHECK2: invoke void @_ZN5test04BaseD2Ev 115 // CHECK2: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 116 // CHECK2: invoke void @_ZN5test05VBaseD2Ev 117 // CHECK2: unwind label [[VBASE_UNWIND:%[a-zA-Z0-9.]+]] 118 } 119 120 // Test base-class aliasing. 121 namespace test1 { 122 struct A { ~A(); char ***m; }; // non-trivial destructor 123 struct B { ~B(); }; // non-trivial destructor 124 struct Empty { }; // trivial destructor, empty 125 struct NonEmpty { int x; }; // trivial destructor, non-empty 126 127 // There must be a definition in this translation unit for the alias 128 // optimization to apply. ~A()129 A::~A() { delete m; } 130 131 struct M : A { ~M(); }; ~M()132 M::~M() {} 133 // CHECK3: @_ZN5test11MD2Ev = alias {{.*}} @_ZN5test11AD2Ev 134 135 struct N : A, Empty { ~N(); }; ~N()136 N::~N() {} 137 // CHECK3: @_ZN5test11ND2Ev = alias {{.*}} @_ZN5test11AD2Ev 138 139 struct O : Empty, A { ~O(); }; ~O()140 O::~O() {} 141 // CHECK3: @_ZN5test11OD2Ev = alias {{.*}} @_ZN5test11AD2Ev 142 143 struct P : NonEmpty, A { ~P(); }; ~P()144 P::~P() {} // CHECK3-LABEL: define void @_ZN5test11PD2Ev(%"struct.test1::P"* %this) unnamed_addr 145 146 struct Q : A, B { ~Q(); }; ~Q()147 Q::~Q() {} // CHECK3-LABEL: define void @_ZN5test11QD2Ev(%"struct.test1::Q"* %this) unnamed_addr 148 149 struct R : A { ~R(); }; ~R()150 R::~R() { A a; } // CHECK3-LABEL: define void @_ZN5test11RD2Ev(%"struct.test1::R"* %this) unnamed_addr 151 152 struct S : A { ~S(); int x; }; ~S()153 S::~S() {} 154 // CHECK4: @_ZN5test11SD2Ev = alias {{.*}}, bitcast {{.*}} @_ZN5test11AD2Ev 155 156 struct T : A { ~T(); B x; }; ~T()157 T::~T() {} // CHECK4-LABEL: define void @_ZN5test11TD2Ev(%"struct.test1::T"* %this) unnamed_addr 158 159 // The VTT parameter prevents this. We could still make this work 160 // for calling conventions that are safe against extra parameters. 161 struct U : A, virtual B { ~U(); }; ~U()162 U::~U() {} // CHECK4-LABEL: define void @_ZN5test11UD2Ev(%"struct.test1::U"* %this, i8** %vtt) unnamed_addr 163 } 164 165 // PR6471 166 namespace test2 { 167 struct A { ~A(); char ***m; }; 168 struct B : A { ~B(); }; 169 ~B()170 B::~B() {} 171 // CHECK4-LABEL: define void @_ZN5test21BD2Ev(%"struct.test2::B"* %this) unnamed_addr 172 // CHECK4: call void @_ZN5test21AD2Ev 173 } 174 175 // PR7142 176 namespace test3 { 177 struct A { virtual ~A(); }; 178 struct B { virtual ~B(); }; 179 namespace { // internal linkage => deferred 180 struct C : A, B {}; // ~B() in D requires a this-adjustment thunk 181 struct D : C {}; // D::~D() is an alias to C::~C() 182 } 183 test()184 void test() { 185 new D; // Force emission of D's vtable 186 } 187 188 // CHECK4-LABEL: define internal void @_ZN5test312_GLOBAL__N_11CD2Ev(%"struct.test3::(anonymous namespace)::C"* %this) unnamed_addr 189 // CHECK4: invoke void @_ZN5test31BD2Ev( 190 // CHECK4: call void @_ZN5test31AD2Ev( 191 // CHECK4: ret void 192 193 // CHECK4-LABEL: define internal void @_ZN5test312_GLOBAL__N_11DD0Ev(%"struct.test3::(anonymous namespace)::D"* %this) unnamed_addr 194 // CHECK4-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 195 // CHECK4: invoke void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 196 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW:#[0-9]+]] 197 // CHECK4: ret void 198 // CHECK4: landingpad { i8*, i32 } 199 // CHECK4-NEXT: cleanup 200 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 201 // CHECK4: resume { i8*, i32 } 202 203 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD1Ev( 204 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 205 // CHECK4: call void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 206 // CHECK4: ret void 207 208 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD0Ev( 209 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 210 // CHECK4: call void @_ZN5test312_GLOBAL__N_11DD0Ev( 211 // CHECK4: ret void 212 213 // CHECK4-LABEL: define internal void @_ZN5test312_GLOBAL__N_11CD0Ev(%"struct.test3::(anonymous namespace)::C"* %this) unnamed_addr 214 // CHECK4-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 215 // CHECK4: invoke void @_ZN5test312_GLOBAL__N_11CD2Ev( 216 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 217 // CHECK4: ret void 218 // CHECK4: landingpad { i8*, i32 } 219 // CHECK4-NEXT: cleanup 220 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 221 // CHECK4: resume { i8*, i32 } 222 223 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD1Ev( 224 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 225 // CHECK4: call void @_ZN5test312_GLOBAL__N_11CD2Ev( 226 // CHECK4: ret void 227 228 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD0Ev( 229 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 230 // CHECK4: call void @_ZN5test312_GLOBAL__N_11CD0Ev( 231 // CHECK4: ret void 232 233 // CHECK4-LABEL: declare void @_ZN5test31BD2Ev( 234 // CHECK4-LABEL: declare void @_ZN5test31AD2Ev( 235 236 // CHECK4: attributes [[NUW]] = {{[{].*}} nounwind {{.*[}]}} 237 } 238 239 namespace test4 { 240 struct A { ~A(); }; 241 242 // CHECK5-LABEL: define void @_ZN5test43fooEv() 243 // CHECK5: call void @_ZN5test41AD1Ev 244 // CHECK5: ret void foo()245 void foo() { 246 { 247 A a; 248 goto failure; 249 } 250 251 failure: 252 return; 253 } 254 255 // CHECK5-LABEL: define void @_ZN5test43barEi( 256 // CHECK5: [[X:%.*]] = alloca i32 257 // CHECK5-NEXT: [[A:%.*]] = alloca 258 // CHECK5: br label 259 // CHECK5: [[TMP:%.*]] = load i32, i32* [[X]] 260 // CHECK5-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP]], 0 261 // CHECK5-NEXT: br i1 262 // CHECK5: call void @_ZN5test41AD1Ev( 263 // CHECK5: br label 264 // CHECK5: [[TMP:%.*]] = load i32, i32* [[X]] 265 // CHECK5: [[TMP2:%.*]] = add nsw i32 [[TMP]], -1 266 // CHECK5: store i32 [[TMP2]], i32* [[X]] 267 // CHECK5: br label 268 // CHECK5: ret void bar(int x)269 void bar(int x) { 270 for (A a; x; ) { 271 x--; 272 } 273 } 274 } 275 276 // PR7575 277 namespace test5 { 278 struct A { ~A(); }; 279 280 // CHECK5-LABEL: define void @_ZN5test53fooEv() 281 // CHECK5: [[ELEMS:%.*]] = alloca [5 x [[A:%.*]]], align 282 // CHECK5-NEXT: [[EXN:%.*]] = alloca i8* 283 // CHECK5-NEXT: [[SEL:%.*]] = alloca i32 284 // CHECK5-NEXT: [[PELEMS:%.*]] = bitcast [5 x [[A]]]* [[ELEMS]] to i8* 285 // CHECK5-NEXT: call void @llvm.lifetime.start(i64 5, i8* [[PELEMS]]) 286 // CHECK5-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [5 x [[A]]], [5 x [[A]]]* [[ELEMS]], i32 0, i32 0 287 // CHECK5-NEXT: [[END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[BEGIN]], i64 5 288 // CHECK5-NEXT: br label 289 // CHECK5: [[POST:%.*]] = phi [[A]]* [ [[END]], {{%.*}} ], [ [[ELT:%.*]], {{%.*}} ] 290 // CHECK5-NEXT: [[ELT]] = getelementptr inbounds [[A]], [[A]]* [[POST]], i64 -1 291 // CHECK5-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[ELT]]) 292 // CHECK5: [[T0:%.*]] = icmp eq [[A]]* [[ELT]], [[BEGIN]] 293 // CHECK5-NEXT: br i1 [[T0]], 294 // CHECK5: call void @llvm.lifetime.end 295 // CHECK5-NEXT: ret void 296 // lpad 297 // CHECK5: [[EMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[ELT]] 298 // CHECK5-NEXT: br i1 [[EMPTY]] 299 // CHECK5: [[AFTER:%.*]] = phi [[A]]* [ [[ELT]], {{%.*}} ], [ [[CUR:%.*]], {{%.*}} ] 300 // CHECK5-NEXT: [[CUR:%.*]] = getelementptr inbounds [[A]], [[A]]* [[AFTER]], i64 -1 301 // CHECK5-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[CUR]]) 302 // CHECK5: [[DONE:%.*]] = icmp eq [[A]]* [[CUR]], [[BEGIN]] 303 // CHECK5-NEXT: br i1 [[DONE]], foo()304 void foo() { 305 A elems[5]; 306 } 307 } 308 309 namespace test6 { 310 void opaque(); 311 312 struct A { ~A(); }; 313 template <unsigned> struct B { B(); ~B(); int _; }; 314 struct C : B<0>, B<1>, virtual B<2>, virtual B<3> { 315 A x, y, z; 316 317 C(); 318 ~C(); 319 }; 320 C()321 C::C() { opaque(); } 322 // CHECK5-LABEL: define void @_ZN5test61CC1Ev(%"struct.test6::C"* %this) unnamed_addr 323 // CHECK5: call void @_ZN5test61BILj2EEC2Ev 324 // CHECK5: invoke void @_ZN5test61BILj3EEC2Ev 325 // CHECK5: invoke void @_ZN5test61BILj0EEC2Ev 326 // CHECK5: invoke void @_ZN5test61BILj1EEC2Ev 327 // CHECK5: invoke void @_ZN5test66opaqueEv 328 // CHECK5: ret void 329 // FIXME: way too much EH cleanup code follows 330 ~C()331 C::~C() { opaque(); } 332 // CHECK5-LABEL: define void @_ZN5test61CD2Ev(%"struct.test6::C"* %this, i8** %vtt) unnamed_addr 333 // CHECK5: invoke void @_ZN5test66opaqueEv 334 // CHECK5: invoke void @_ZN5test61AD1Ev 335 // CHECK5: invoke void @_ZN5test61AD1Ev 336 // CHECK5: invoke void @_ZN5test61AD1Ev 337 // CHECK5: invoke void @_ZN5test61BILj1EED2Ev 338 // CHECK5: call void @_ZN5test61BILj0EED2Ev 339 // CHECK5: ret void 340 // CHECK5: invoke void @_ZN5test61AD1Ev 341 // CHECK5: invoke void @_ZN5test61AD1Ev 342 // CHECK5: invoke void @_ZN5test61AD1Ev 343 // CHECK5: invoke void @_ZN5test61BILj1EED2Ev 344 // CHECK5: invoke void @_ZN5test61BILj0EED2Ev 345 346 // CHECK5-LABEL: define void @_ZN5test61CD1Ev(%"struct.test6::C"* %this) unnamed_addr 347 // CHECK5: invoke void @_ZN5test61CD2Ev 348 // CHECK5: invoke void @_ZN5test61BILj3EED2Ev 349 // CHECK5: call void @_ZN5test61BILj2EED2Ev 350 // CHECK5: ret void 351 // CHECK5: invoke void @_ZN5test61BILj3EED2Ev 352 // CHECK5: invoke void @_ZN5test61BILj2EED2Ev 353 } 354 355 // PR 9197 356 namespace test7 { 357 struct D { ~D(); }; 358 359 struct A { ~A(); }; ~A()360 A::~A() { } 361 362 struct B : public A { 363 ~B(); 364 D arr[1]; 365 }; 366 367 // Verify that this doesn't get emitted as an alias 368 // CHECK5-LABEL: define void @_ZN5test71BD2Ev( 369 // CHECK5: invoke void @_ZN5test71DD1Ev( 370 // CHECK5: call void @_ZN5test71AD2Ev( ~B()371 B::~B() {} 372 } 373 374 // PR10467 375 namespace test8 { 376 struct A { A(); ~A(); }; 377 378 void die() __attribute__((noreturn)); test()379 void test() { 380 A x; 381 while (1) { 382 A y; 383 goto l; 384 } 385 l: die(); 386 } 387 388 // CHECK5-LABEL: define void @_ZN5test84testEv() 389 // CHECK5: [[X:%.*]] = alloca [[A:%.*]], align 1 390 // CHECK5-NEXT: [[Y:%.*]] = alloca [[A:%.*]], align 1 391 // CHECK5: call void @_ZN5test81AC1Ev([[A]]* [[X]]) 392 // CHECK5-NEXT: br label 393 // CHECK5: invoke void @_ZN5test81AC1Ev([[A]]* [[Y]]) 394 // CHECK5: invoke void @_ZN5test81AD1Ev([[A]]* [[Y]]) 395 // CHECK5-NOT: switch 396 // CHECK5: invoke void @_ZN5test83dieEv() 397 // CHECK5: unreachable 398 } 399 400 // PR12710 401 namespace test9 { 402 struct ArgType { 403 ~ArgType(); 404 }; 405 template<typename T> 406 void f1(const ArgType& = ArgType()); 407 void f2(); bar()408 void bar() { 409 f1<int>(); 410 f2(); 411 } 412 // CHECK5: call void @_ZN5test97ArgTypeD1Ev(%"struct.test9::ArgType"* % 413 // CHECK5: call void @_ZN5test92f2Ev() 414 } 415 416 namespace test10 { 417 // We used to crash trying to replace _ZN6test106OptionD1Ev with 418 // _ZN6test106OptionD2Ev twice. 419 struct Option { ~Optiontest10::Option420 virtual ~Option() {} 421 }; 422 template <class DataType> class opt : public Option {}; 423 template class opt<int>; 424 // CHECK5-LABEL: define zeroext i1 @_ZN6test1016handleOccurrenceEv( handleOccurrence()425 bool handleOccurrence() { 426 // CHECK5: call void @_ZN6test106OptionD2Ev( 427 Option x; 428 return true; 429 } 430 } 431