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 19 B::~B() { } 20 21 // Field with non-trivial destructor 22 struct C { 23 A a; 24 25 ~C(); 26 }; 27 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 43 allocator::~allocator() throw() { foo(); } 44 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 64 A::~A() { } 65 struct B : A { 66 virtual ~B(); 67 }; 68 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. 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 }; 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. 129 A::~A() { delete m; } 130 131 struct M : A { ~M(); }; 132 M::~M() {} 133 // CHECK3: @_ZN5test11MD2Ev = alias {{.*}} @_ZN5test11AD2Ev 134 135 struct N : A, Empty { ~N(); }; 136 N::~N() {} 137 // CHECK3: @_ZN5test11ND2Ev = alias {{.*}} @_ZN5test11AD2Ev 138 139 struct O : Empty, A { ~O(); }; 140 O::~O() {} 141 // CHECK3: @_ZN5test11OD2Ev = alias {{.*}} @_ZN5test11AD2Ev 142 143 struct P : NonEmpty, A { ~P(); }; 144 P::~P() {} // CHECK3-LABEL: define void @_ZN5test11PD2Ev(%"struct.test1::P"* %this) unnamed_addr 145 146 struct Q : A, B { ~Q(); }; 147 Q::~Q() {} // CHECK3-LABEL: define void @_ZN5test11QD2Ev(%"struct.test1::Q"* %this) unnamed_addr 148 149 struct R : A { ~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; }; 153 S::~S() {} 154 // CHECK4: @_ZN5test11SD2Ev = alias bitcast {{.*}} @_ZN5test11AD2Ev 155 156 struct T : A { ~T(); B x; }; 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(); }; 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(); }; 169 170 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 } 183 184 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: invoke void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 195 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW:#[0-9]+]] 196 // CHECK4: ret void 197 // CHECK4: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 198 // CHECK4-NEXT: cleanup 199 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 200 // CHECK4: resume { i8*, i32 } 201 202 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD1Ev( 203 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 204 // CHECK4: call void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 205 // CHECK4: ret void 206 207 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD0Ev( 208 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 209 // CHECK4: call void @_ZN5test312_GLOBAL__N_11DD0Ev( 210 // CHECK4: ret void 211 212 // CHECK4-LABEL: define internal void @_ZN5test312_GLOBAL__N_11CD0Ev(%"struct.test3::(anonymous namespace)::C"* %this) unnamed_addr 213 // CHECK4: invoke void @_ZN5test312_GLOBAL__N_11CD2Ev( 214 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 215 // CHECK4: ret void 216 // CHECK4: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 217 // CHECK4-NEXT: cleanup 218 // CHECK4: call void @_ZdlPv({{.*}}) [[NUW]] 219 // CHECK4: resume { i8*, i32 } 220 221 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD1Ev( 222 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 223 // CHECK4: call void @_ZN5test312_GLOBAL__N_11CD2Ev( 224 // CHECK4: ret void 225 226 // CHECK4-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD0Ev( 227 // CHECK4: getelementptr inbounds i8, i8* {{.*}}, i64 -8 228 // CHECK4: call void @_ZN5test312_GLOBAL__N_11CD0Ev( 229 // CHECK4: ret void 230 231 // CHECK4-LABEL: declare void @_ZN5test31BD2Ev( 232 // CHECK4-LABEL: declare void @_ZN5test31AD2Ev( 233 234 // CHECK4: attributes [[NUW]] = {{[{].*}} nounwind {{.*[}]}} 235 } 236 237 namespace test4 { 238 struct A { ~A(); }; 239 240 // CHECK5-LABEL: define void @_ZN5test43fooEv() 241 // CHECK5: call void @_ZN5test41AD1Ev 242 // CHECK5: ret void 243 void foo() { 244 { 245 A a; 246 goto failure; 247 } 248 249 failure: 250 return; 251 } 252 253 // CHECK5-LABEL: define void @_ZN5test43barEi( 254 // CHECK5: [[X:%.*]] = alloca i32 255 // CHECK5-NEXT: [[A:%.*]] = alloca 256 // CHECK5: br label 257 // CHECK5: [[TMP:%.*]] = load i32, i32* [[X]] 258 // CHECK5-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP]], 0 259 // CHECK5-NEXT: br i1 260 // CHECK5: call void @_ZN5test41AD1Ev( 261 // CHECK5: br label 262 // CHECK5: [[TMP:%.*]] = load i32, i32* [[X]] 263 // CHECK5: [[TMP2:%.*]] = add nsw i32 [[TMP]], -1 264 // CHECK5: store i32 [[TMP2]], i32* [[X]] 265 // CHECK5: br label 266 // CHECK5: ret void 267 void bar(int x) { 268 for (A a; x; ) { 269 x--; 270 } 271 } 272 } 273 274 // PR7575 275 namespace test5 { 276 struct A { ~A(); }; 277 278 // CHECK5-LABEL: define void @_ZN5test53fooEv() 279 // CHECK5: [[ELEMS:%.*]] = alloca [5 x [[A:%.*]]], align 280 // CHECK5-NEXT: [[EXN:%.*]] = alloca i8* 281 // CHECK5-NEXT: [[SEL:%.*]] = alloca i32 282 // CHECK5-NEXT: [[PELEMS:%.*]] = bitcast [5 x [[A]]]* [[ELEMS]] to i8* 283 // CHECK5-NEXT: call void @llvm.lifetime.start(i64 5, i8* [[PELEMS]]) 284 // CHECK5-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [5 x [[A]]], [5 x [[A]]]* [[ELEMS]], i32 0, i32 0 285 // CHECK5-NEXT: [[END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[BEGIN]], i64 5 286 // CHECK5-NEXT: br label 287 // CHECK5: [[POST:%.*]] = phi [[A]]* [ [[END]], {{%.*}} ], [ [[ELT:%.*]], {{%.*}} ] 288 // CHECK5-NEXT: [[ELT]] = getelementptr inbounds [[A]], [[A]]* [[POST]], i64 -1 289 // CHECK5-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[ELT]]) 290 // CHECK5: [[T0:%.*]] = icmp eq [[A]]* [[ELT]], [[BEGIN]] 291 // CHECK5-NEXT: br i1 [[T0]], 292 // CHECK5: call void @llvm.lifetime.end 293 // CHECK5-NEXT: ret void 294 // lpad 295 // CHECK5: [[EMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[ELT]] 296 // CHECK5-NEXT: br i1 [[EMPTY]] 297 // CHECK5: [[AFTER:%.*]] = phi [[A]]* [ [[ELT]], {{%.*}} ], [ [[CUR:%.*]], {{%.*}} ] 298 // CHECK5-NEXT: [[CUR:%.*]] = getelementptr inbounds [[A]], [[A]]* [[AFTER]], i64 -1 299 // CHECK5-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[CUR]]) 300 // CHECK5: [[DONE:%.*]] = icmp eq [[A]]* [[CUR]], [[BEGIN]] 301 // CHECK5-NEXT: br i1 [[DONE]], 302 void foo() { 303 A elems[5]; 304 } 305 } 306 307 namespace test6 { 308 void opaque(); 309 310 struct A { ~A(); }; 311 template <unsigned> struct B { B(); ~B(); int _; }; 312 struct C : B<0>, B<1>, virtual B<2>, virtual B<3> { 313 A x, y, z; 314 315 C(); 316 ~C(); 317 }; 318 319 C::C() { opaque(); } 320 // CHECK5-LABEL: define void @_ZN5test61CC1Ev(%"struct.test6::C"* %this) unnamed_addr 321 // CHECK5: call void @_ZN5test61BILj2EEC2Ev 322 // CHECK5: invoke void @_ZN5test61BILj3EEC2Ev 323 // CHECK5: invoke void @_ZN5test61BILj0EEC2Ev 324 // CHECK5: invoke void @_ZN5test61BILj1EEC2Ev 325 // CHECK5: invoke void @_ZN5test66opaqueEv 326 // CHECK5: ret void 327 // FIXME: way too much EH cleanup code follows 328 329 C::~C() { opaque(); } 330 // CHECK5-LABEL: define void @_ZN5test61CD2Ev(%"struct.test6::C"* %this, i8** %vtt) unnamed_addr 331 // CHECK5: invoke void @_ZN5test66opaqueEv 332 // CHECK5: invoke void @_ZN5test61AD1Ev 333 // CHECK5: invoke void @_ZN5test61AD1Ev 334 // CHECK5: invoke void @_ZN5test61AD1Ev 335 // CHECK5: invoke void @_ZN5test61BILj1EED2Ev 336 // CHECK5: call void @_ZN5test61BILj0EED2Ev 337 // CHECK5: ret void 338 // CHECK5: invoke void @_ZN5test61AD1Ev 339 // CHECK5: invoke void @_ZN5test61AD1Ev 340 // CHECK5: invoke void @_ZN5test61AD1Ev 341 // CHECK5: invoke void @_ZN5test61BILj1EED2Ev 342 // CHECK5: invoke void @_ZN5test61BILj0EED2Ev 343 344 // CHECK5-LABEL: define void @_ZN5test61CD1Ev(%"struct.test6::C"* %this) unnamed_addr 345 // CHECK5: invoke void @_ZN5test61CD2Ev 346 // CHECK5: invoke void @_ZN5test61BILj3EED2Ev 347 // CHECK5: call void @_ZN5test61BILj2EED2Ev 348 // CHECK5: ret void 349 // CHECK5: invoke void @_ZN5test61BILj3EED2Ev 350 // CHECK5: invoke void @_ZN5test61BILj2EED2Ev 351 } 352 353 // PR 9197 354 namespace test7 { 355 struct D { ~D(); }; 356 357 struct A { ~A(); }; 358 A::~A() { } 359 360 struct B : public A { 361 ~B(); 362 D arr[1]; 363 }; 364 365 // Verify that this doesn't get emitted as an alias 366 // CHECK5-LABEL: define void @_ZN5test71BD2Ev( 367 // CHECK5: invoke void @_ZN5test71DD1Ev( 368 // CHECK5: call void @_ZN5test71AD2Ev( 369 B::~B() {} 370 } 371 372 // PR10467 373 namespace test8 { 374 struct A { A(); ~A(); }; 375 376 void die() __attribute__((noreturn)); 377 void test() { 378 A x; 379 while (1) { 380 A y; 381 goto l; 382 } 383 l: die(); 384 } 385 386 // CHECK5-LABEL: define void @_ZN5test84testEv() 387 // CHECK5: [[X:%.*]] = alloca [[A:%.*]], align 1 388 // CHECK5-NEXT: [[Y:%.*]] = alloca [[A:%.*]], align 1 389 // CHECK5: call void @_ZN5test81AC1Ev([[A]]* [[X]]) 390 // CHECK5-NEXT: br label 391 // CHECK5: invoke void @_ZN5test81AC1Ev([[A]]* [[Y]]) 392 // CHECK5: invoke void @_ZN5test81AD1Ev([[A]]* [[Y]]) 393 // CHECK5-NOT: switch 394 // CHECK5: invoke void @_ZN5test83dieEv() 395 // CHECK5: unreachable 396 } 397 398 // PR12710 399 namespace test9 { 400 struct ArgType { 401 ~ArgType(); 402 }; 403 template<typename T> 404 void f1(const ArgType& = ArgType()); 405 void f2(); 406 void bar() { 407 f1<int>(); 408 f2(); 409 } 410 // CHECK5: call void @_ZN5test97ArgTypeD1Ev(%"struct.test9::ArgType"* % 411 // CHECK5: call void @_ZN5test92f2Ev() 412 } 413 414 namespace test10 { 415 // We used to crash trying to replace _ZN6test106OptionD1Ev with 416 // _ZN6test106OptionD2Ev twice. 417 struct Option { 418 virtual ~Option() {} 419 }; 420 template <class DataType> class opt : public Option {}; 421 template class opt<int>; 422 // CHECK5-LABEL: define zeroext i1 @_ZN6test1016handleOccurrenceEv( 423 bool handleOccurrence() { 424 // CHECK5: call void @_ZN6test106OptionD2Ev( 425 Option x; 426 return true; 427 } 428 } 429