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 // WIN32-DAG: @_ZN5test01AD1Ev = alias {{.*}} @_ZN5test01AD2Ev 10 // WIN32-DAG: @_ZN5test11MD2Ev = alias {{.*}} @_ZN5test11AD2Ev 11 // WIN32-DAG: @_ZN5test11ND2Ev = alias {{.*}} @_ZN5test11AD2Ev 12 // WIN32-DAG: @_ZN5test11OD2Ev = alias {{.*}} @_ZN5test11AD2Ev 13 // WIN32-DAG: @_ZN5test11SD2Ev = alias bitcast {{.*}} @_ZN5test11AD2Ev 14 15 16 struct A { 17 int a; 18 19 ~A(); 20 }; 21 22 // Base with non-trivial destructor 23 struct B : A { 24 ~B(); 25 }; 26 27 B::~B() { } 28 29 // Field with non-trivial destructor 30 struct C { 31 A a; 32 33 ~C(); 34 }; 35 36 C::~C() { } 37 38 namespace PR7526 { 39 extern void foo(); 40 struct allocator { 41 ~allocator() throw(); 42 }; 43 44 struct allocator_derived : allocator { }; 45 46 // CHECK-LABEL: define void @_ZN6PR75263fooEv() 47 // CHECK: call void {{.*}} @_ZN6PR75269allocatorD2Ev 48 49 // CHECK-LABEL: define void @_ZN6PR75269allocatorD2Ev(%"struct.PR7526::allocator"* %this) unnamed_addr 50 // CHECK: call void @__cxa_call_unexpected 51 allocator::~allocator() throw() { foo(); } 52 53 void foo() { 54 allocator_derived ad; 55 } 56 } 57 58 // PR5084 59 template<typename T> 60 class A1 { 61 ~A1(); 62 }; 63 64 template<> A1<char>::~A1(); 65 66 // PR5529 67 namespace PR5529 { 68 struct A { 69 ~A(); 70 }; 71 72 A::~A() { } 73 struct B : A { 74 virtual ~B(); 75 }; 76 77 B::~B() {} 78 } 79 80 // FIXME: there's a known problem in the codegen here where, if one 81 // destructor throws, the remaining destructors aren't run. Fix it, 82 // then make this code check for it. 83 namespace test0 { 84 void foo(); 85 struct VBase { ~VBase(); }; 86 struct Base { ~Base(); }; 87 struct Member { ~Member(); }; 88 89 struct A : Base { 90 Member M; 91 ~A(); 92 }; 93 94 // The function-try-block won't suppress -mconstructor-aliases here. 95 A::~A() try { } catch (int i) {} 96 97 // complete destructor alias tested above 98 99 // CHECK-LABEL: define void @_ZN5test01AD2Ev(%"struct.test0::A"* %this) unnamed_addr 100 // CHECK: invoke void @_ZN5test06MemberD1Ev 101 // CHECK: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 102 // CHECK: invoke void @_ZN5test04BaseD2Ev 103 // CHECK: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 104 105 struct B : Base, virtual VBase { 106 Member M; 107 ~B(); 108 }; 109 B::~B() try { } catch (int i) {} 110 // It will suppress the delegation optimization here, though. 111 112 // CHECK-LABEL: define void @_ZN5test01BD2Ev(%"struct.test0::B"* %this, i8** %vtt) unnamed_addr 113 // CHECK: invoke void @_ZN5test06MemberD1Ev 114 // CHECK: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 115 // CHECK: invoke void @_ZN5test04BaseD2Ev 116 // CHECK: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 117 118 // CHECK-LABEL: define void @_ZN5test01BD1Ev(%"struct.test0::B"* %this) unnamed_addr 119 // CHECK: invoke void @_ZN5test06MemberD1Ev 120 // CHECK: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]] 121 // CHECK: invoke void @_ZN5test04BaseD2Ev 122 // CHECK: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]] 123 // CHECK: invoke void @_ZN5test05VBaseD2Ev 124 // CHECK: unwind label [[VBASE_UNWIND:%[a-zA-Z0-9.]+]] 125 } 126 127 // Test base-class aliasing. 128 namespace test1 { 129 struct A { ~A(); char ***m; }; // non-trivial destructor 130 struct B { ~B(); }; // non-trivial destructor 131 struct Empty { }; // trivial destructor, empty 132 struct NonEmpty { int x; }; // trivial destructor, non-empty 133 134 // There must be a definition in this translation unit for the alias 135 // optimization to apply. 136 A::~A() { delete m; } 137 138 struct M : A { ~M(); }; 139 M::~M() {} // alias tested above 140 141 struct N : A, Empty { ~N(); }; 142 N::~N() {} // alias tested above 143 144 struct O : Empty, A { ~O(); }; 145 O::~O() {} // alias tested above 146 147 struct P : NonEmpty, A { ~P(); }; 148 P::~P() {} // CHECK-LABEL: define void @_ZN5test11PD2Ev(%"struct.test1::P"* %this) unnamed_addr 149 150 struct Q : A, B { ~Q(); }; 151 Q::~Q() {} // CHECK-LABEL: define void @_ZN5test11QD2Ev(%"struct.test1::Q"* %this) unnamed_addr 152 153 struct R : A { ~R(); }; 154 R::~R() { A a; } // CHECK-LABEL: define void @_ZN5test11RD2Ev(%"struct.test1::R"* %this) unnamed_addr 155 156 struct S : A { ~S(); int x; }; 157 S::~S() {} // alias tested above 158 159 struct T : A { ~T(); B x; }; 160 T::~T() {} // CHECK-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() {} // CHECK-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 // CHECK-LABEL: define void @_ZN5test21BD2Ev(%"struct.test2::B"* %this) unnamed_addr 175 // CHECK: 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 } 191 192 namespace test4 { 193 struct A { ~A(); }; 194 195 // CHECK-LABEL: define void @_ZN5test43fooEv() 196 // CHECK: call void @_ZN5test41AD1Ev 197 // CHECK: ret void 198 void foo() { 199 { 200 A a; 201 goto failure; 202 } 203 204 failure: 205 return; 206 } 207 208 // CHECK-LABEL: define void @_ZN5test43barEi( 209 // CHECK: [[X:%.*]] = alloca i32 210 // CHECK-NEXT: [[A:%.*]] = alloca 211 // CHECK: br label 212 // CHECK: [[TMP:%.*]] = load i32* [[X]] 213 // CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP]], 0 214 // CHECK-NEXT: br i1 215 // CHECK: call void @_ZN5test41AD1Ev( 216 // CHECK: br label 217 // CHECK: [[TMP:%.*]] = load i32* [[X]] 218 // CHECK: [[TMP2:%.*]] = add nsw i32 [[TMP]], -1 219 // CHECK: store i32 [[TMP2]], i32* [[X]] 220 // CHECK: br label 221 // CHECK: ret void 222 void bar(int x) { 223 for (A a; x; ) { 224 x--; 225 } 226 } 227 } 228 229 // PR7575 230 namespace test5 { 231 struct A { ~A(); }; 232 233 // CHECK-LABEL: define void @_ZN5test53fooEv() 234 // CHECK: [[ELEMS:%.*]] = alloca [5 x [[A:%.*]]], align 235 // CHECK-NEXT: [[EXN:%.*]] = alloca i8* 236 // CHECK-NEXT: [[SEL:%.*]] = alloca i32 237 // CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [5 x [[A]]]* [[ELEMS]], i32 0, i32 0 238 // CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]]* [[BEGIN]], i64 5 239 // CHECK-NEXT: br label 240 // CHECK: [[POST:%.*]] = phi [[A]]* [ [[END]], {{%.*}} ], [ [[ELT:%.*]], {{%.*}} ] 241 // CHECK-NEXT: [[ELT]] = getelementptr inbounds [[A]]* [[POST]], i64 -1 242 // CHECK-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[ELT]]) 243 // CHECK: [[T0:%.*]] = icmp eq [[A]]* [[ELT]], [[BEGIN]] 244 // CHECK-NEXT: br i1 [[T0]], 245 // CHECK: ret void 246 // lpad 247 // CHECK: [[EMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[ELT]] 248 // CHECK-NEXT: br i1 [[EMPTY]] 249 // CHECK: [[AFTER:%.*]] = phi [[A]]* [ [[ELT]], {{%.*}} ], [ [[CUR:%.*]], {{%.*}} ] 250 // CHECK-NEXT: [[CUR:%.*]] = getelementptr inbounds [[A]]* [[AFTER]], i64 -1 251 // CHECK-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[CUR]]) 252 // CHECK: [[DONE:%.*]] = icmp eq [[A]]* [[CUR]], [[BEGIN]] 253 // CHECK-NEXT: br i1 [[DONE]], 254 void foo() { 255 A elems[5]; 256 } 257 } 258 259 namespace test6 { 260 void opaque(); 261 262 struct A { ~A(); }; 263 template <unsigned> struct B { B(); ~B(); int _; }; 264 struct C : B<0>, B<1>, virtual B<2>, virtual B<3> { 265 A x, y, z; 266 267 C(); 268 ~C(); 269 }; 270 271 C::C() { opaque(); } 272 // CHECK-LABEL: define void @_ZN5test61CC1Ev(%"struct.test6::C"* %this) unnamed_addr 273 // CHECK: call void @_ZN5test61BILj2EEC2Ev 274 // CHECK: invoke void @_ZN5test61BILj3EEC2Ev 275 // CHECK: invoke void @_ZN5test61BILj0EEC2Ev 276 // CHECK: invoke void @_ZN5test61BILj1EEC2Ev 277 // CHECK: invoke void @_ZN5test66opaqueEv 278 // CHECK: ret void 279 // FIXME: way too much EH cleanup code follows 280 281 C::~C() { opaque(); } 282 // CHECK-LABEL: define void @_ZN5test61CD2Ev(%"struct.test6::C"* %this, i8** %vtt) unnamed_addr 283 // CHECK: invoke void @_ZN5test66opaqueEv 284 // CHECK: invoke void @_ZN5test61AD1Ev 285 // CHECK: invoke void @_ZN5test61AD1Ev 286 // CHECK: invoke void @_ZN5test61AD1Ev 287 // CHECK: invoke void @_ZN5test61BILj1EED2Ev 288 // CHECK: call void @_ZN5test61BILj0EED2Ev 289 // CHECK: ret void 290 // CHECK: invoke void @_ZN5test61AD1Ev 291 // CHECK: invoke void @_ZN5test61AD1Ev 292 // CHECK: invoke void @_ZN5test61AD1Ev 293 // CHECK: invoke void @_ZN5test61BILj1EED2Ev 294 // CHECK: invoke void @_ZN5test61BILj0EED2Ev 295 296 // CHECK-LABEL: define void @_ZN5test61CD1Ev(%"struct.test6::C"* %this) unnamed_addr 297 // CHECK: invoke void @_ZN5test61CD2Ev 298 // CHECK: invoke void @_ZN5test61BILj3EED2Ev 299 // CHECK: call void @_ZN5test61BILj2EED2Ev 300 // CHECK: ret void 301 // CHECK: invoke void @_ZN5test61BILj3EED2Ev 302 // CHECK: invoke void @_ZN5test61BILj2EED2Ev 303 } 304 305 // PR 9197 306 namespace test7 { 307 struct D { ~D(); }; 308 309 struct A { ~A(); }; 310 A::~A() { } 311 312 struct B : public A { 313 ~B(); 314 D arr[1]; 315 }; 316 317 // Verify that this doesn't get emitted as an alias 318 // CHECK-LABEL: define void @_ZN5test71BD2Ev( 319 // CHECK: invoke void @_ZN5test71DD1Ev( 320 // CHECK: call void @_ZN5test71AD2Ev( 321 B::~B() {} 322 } 323 324 // PR10467 325 namespace test8 { 326 struct A { A(); ~A(); }; 327 328 void die() __attribute__((noreturn)); 329 void test() { 330 A x; 331 while (1) { 332 A y; 333 goto l; 334 } 335 l: die(); 336 } 337 338 // CHECK-LABEL: define void @_ZN5test84testEv() 339 // CHECK: [[X:%.*]] = alloca [[A:%.*]], align 1 340 // CHECK-NEXT: [[Y:%.*]] = alloca [[A:%.*]], align 1 341 // CHECK: call void @_ZN5test81AC1Ev([[A]]* [[X]]) 342 // CHECK-NEXT: br label 343 // CHECK: invoke void @_ZN5test81AC1Ev([[A]]* [[Y]]) 344 // CHECK: invoke void @_ZN5test81AD1Ev([[A]]* [[Y]]) 345 // CHECK-NOT: switch 346 // CHECK: invoke void @_ZN5test83dieEv() 347 // CHECK: unreachable 348 } 349 350 // PR12710 351 namespace test9 { 352 struct ArgType { 353 ~ArgType(); 354 }; 355 template<typename T> 356 void f1(const ArgType& = ArgType()); 357 void f2(); 358 void bar() { 359 f1<int>(); 360 f2(); 361 } 362 // CHECK: call void @_ZN5test97ArgTypeD1Ev(%"struct.test9::ArgType"* % 363 // CHECK: call void @_ZN5test92f2Ev() 364 } 365 366 namespace test10 { 367 // We used to crash trying to replace _ZN6test106OptionD1Ev with 368 // _ZN6test106OptionD2Ev twice. 369 struct Option { 370 virtual ~Option() {} 371 }; 372 template <class DataType> class opt : public Option {}; 373 template class opt<int>; 374 // CHECK-LABEL: define zeroext i1 @_ZN6test1016handleOccurrenceEv( 375 bool handleOccurrence() { 376 // CHECK: call void @_ZN6test106OptionD2Ev( 377 Option x; 378 return true; 379 } 380 } 381 382 // Checks from test3: 383 384 // CHECK-LABEL: define internal void @_ZN5test312_GLOBAL__N_11DD0Ev(%"struct.test3::(anonymous namespace)::D"* %this) unnamed_addr 385 // CHECK: invoke void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 386 // CHECK: call void @_ZdlPv({{.*}}) [[NUW:#[0-9]+]] 387 // CHECK: ret void 388 // CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 389 // CHECK-NEXT: cleanup 390 // CHECK: call void @_ZdlPv({{.*}}) [[NUW]] 391 // CHECK: resume { i8*, i32 } 392 393 // CHECK-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD1Ev( 394 // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8 395 // CHECK: call void {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev 396 // CHECK: ret void 397 398 // CHECK-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD0Ev( 399 // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8 400 // CHECK: call void @_ZN5test312_GLOBAL__N_11DD0Ev( 401 // CHECK: ret void 402 403 // CHECK-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD1Ev( 404 // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8 405 // CHECK: call void @_ZN5test312_GLOBAL__N_11CD2Ev( 406 // CHECK: ret void 407 408 // CHECK-LABEL: define internal void @_ZN5test312_GLOBAL__N_11CD2Ev(%"struct.test3::(anonymous namespace)::C"* %this) unnamed_addr 409 // CHECK: invoke void @_ZN5test31BD2Ev( 410 // CHECK: call void @_ZN5test31AD2Ev( 411 // CHECK: ret void 412 413 // CHECK: declare void @_ZN5test31BD2Ev( 414 // CHECK: declare void @_ZN5test31AD2Ev( 415 416 // CHECK-LABEL: define internal void @_ZN5test312_GLOBAL__N_11CD0Ev(%"struct.test3::(anonymous namespace)::C"* %this) unnamed_addr 417 // CHECK: invoke void @_ZN5test312_GLOBAL__N_11CD2Ev( 418 // CHECK: call void @_ZdlPv({{.*}}) [[NUW]] 419 // CHECK: ret void 420 // CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) 421 // CHECK-NEXT: cleanup 422 // CHECK: call void @_ZdlPv({{.*}}) [[NUW]] 423 // CHECK: resume { i8*, i32 } 424 425 // CHECK-LABEL: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD0Ev( 426 // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8 427 // CHECK: call void @_ZN5test312_GLOBAL__N_11CD0Ev( 428 // CHECK: ret void 429 430 // CHECK: attributes [[NUW]] = {{[{].*}} nounwind {{.*[}]}} 431
