1 // RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o - -mconstructor-aliases -fcxx-exceptions -fexceptions -O1 -disable-llvm-optzns | FileCheck %s
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
15 // Base with non-trivial destructor
22 // Field with non-trivial destructor
37 struct allocator_derived : allocator { };
39 // CHECK-LABEL: define void @_ZN6PR75263fooEv()
40 // CHECK: call void {{.*}} @_ZN6PR75269allocatorD2Ev
42 // CHECK-LABEL: define void @_ZN6PR75269allocatorD2Ev(%"struct.PR7526::allocator"* %this) unnamed_addr
43 // CHECK: call void @__cxa_call_unexpected
44 allocator::~allocator() throw() { foo(); }
57 template<> A1<char>::~A1();
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.
78 struct VBase { ~VBase(); };
79 struct Base { ~Base(); };
80 struct Member { ~Member(); };
87 // The function-try-block won't suppress -mconstructor-aliases here.
88 A::~A() try { } catch (int i) {}
90 // complete destructor alias tested above
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.]+]]
98 struct B : Base, virtual VBase {
102 B::~B() try { } catch (int i) {}
103 // It will suppress the delegation optimization here, though.
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.]+]]
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.]+]]
120 // Test base-class aliasing.
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
127 // There must be a definition in this translation unit for the alias
128 // optimization to apply.
129 A::~A() { delete m; }
131 struct M : A { ~M(); };
132 M::~M() {} // alias tested above
134 struct N : A, Empty { ~N(); };
135 N::~N() {} // alias tested above
137 struct O : Empty, A { ~O(); };
138 O::~O() {} // alias tested above
140 struct P : NonEmpty, A { ~P(); };
141 P::~P() {} // CHECK-LABEL: define void @_ZN5test11PD2Ev(%"struct.test1::P"* %this) unnamed_addr
143 struct Q : A, B { ~Q(); };
144 Q::~Q() {} // CHECK-LABEL: define void @_ZN5test11QD2Ev(%"struct.test1::Q"* %this) unnamed_addr
146 struct R : A { ~R(); };
147 R::~R() { A a; } // CHECK-LABEL: define void @_ZN5test11RD2Ev(%"struct.test1::R"* %this) unnamed_addr
149 struct S : A { ~S(); int x; };
150 S::~S() {} // alias tested above
152 struct T : A { ~T(); B x; };
153 T::~T() {} // CHECK-LABEL: define void @_ZN5test11TD2Ev(%"struct.test1::T"* %this) unnamed_addr
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
163 struct A { ~A(); char ***m; };
164 struct B : A { ~B(); };
167 // CHECK-LABEL: define void @_ZN5test21BD2Ev(%"struct.test2::B"* %this) unnamed_addr
168 // CHECK: call void @_ZN5test21AD2Ev
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()
181 new D; // Force emission of D's vtable
188 // CHECK-LABEL: define void @_ZN5test43fooEv()
189 // CHECK: call void @_ZN5test41AD1Ev
201 // CHECK-LABEL: define void @_ZN5test43barEi(
202 // CHECK: [[X:%.*]] = alloca i32
203 // CHECK-NEXT: [[A:%.*]] = alloca
205 // CHECK: [[TMP:%.*]] = load i32* [[X]]
206 // CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP]], 0
208 // CHECK: call void @_ZN5test41AD1Ev(
210 // CHECK: [[TMP:%.*]] = load i32* [[X]]
211 // CHECK: [[TMP2:%.*]] = add nsw i32 [[TMP]], -1
212 // CHECK: store i32 [[TMP2]], i32* [[X]]
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]],
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]],
256 template <unsigned> struct B { B(); ~B(); int _; };
257 struct C : B<0>, B<1>, virtual B<2>, virtual B<3> {
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
272 // FIXME: way too much EH cleanup code follows
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
280 // CHECK: invoke void @_ZN5test61BILj3EED2Ev
281 // CHECK: invoke void @_ZN5test61BILj2EED2Ev
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
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
305 struct B : public A {
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(
319 struct A { A(); ~A(); };
321 void die() __attribute__((noreturn));
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]])
339 // CHECK: invoke void @_ZN5test83dieEv()
340 // CHECK: unreachable
349 void f1(const ArgType& = ArgType());
355 // CHECK: call void @_ZN5test97ArgTypeD1Ev(%"struct.test9::ArgType"* %
356 // CHECK: call void @_ZN5test92f2Ev()
360 // We used to crash trying to replace _ZN6test106OptionD1Ev with
361 // _ZN6test106OptionD2Ev twice.
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(
375 // Checks from test3:
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]+]]
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 }
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
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(
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(
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(
406 // CHECK: declare void @_ZN5test31BD2Ev(
407 // CHECK: declare void @_ZN5test31AD2Ev(
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]]
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 }
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(
423 // CHECK: attributes [[NUW]] = {{[{].*}} nounwind {{.*[}]}}