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