1 // RUN: %clang_cc1 -emit-llvm -fno-rtti %s -std=c++11 -o - -mconstructor-aliases -triple=i386-pc-win32 -fno-rtti > %t
2 // RUN: FileCheck %s < %t
3 // vftables are emitted very late, so do another pass to try to keep the checks
4 // in source order.
5 // RUN: FileCheck --check-prefix DTORS %s < %t
6 // RUN: FileCheck --check-prefix DTORS2 %s < %t
7 // RUN: FileCheck --check-prefix DTORS3 %s < %t
8 //
9 // RUN: %clang_cc1 -emit-llvm %s -o - -mconstructor-aliases -triple=x86_64-pc-win32 -fno-rtti | FileCheck --check-prefix DTORS-X64 %s
10
11 namespace basic {
12
13 class A {
14 public:
A()15 A() { }
16 ~A();
17 };
18
no_constructor_destructor_infinite_recursion()19 void no_constructor_destructor_infinite_recursion() {
20 A a;
21
22 // CHECK: define linkonce_odr x86_thiscallcc %"class.basic::A"* @"\01??0A@basic@@QAE@XZ"(%"class.basic::A"* returned %this)
23 // CHECK: [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %"class.basic::A"*, align 4
24 // CHECK-NEXT: store %"class.basic::A"* %this, %"class.basic::A"** [[THIS_ADDR]], align 4
25 // CHECK-NEXT: [[T1:%[.0-9A-Z_a-z]+]] = load %"class.basic::A"** [[THIS_ADDR]]
26 // CHECK-NEXT: ret %"class.basic::A"* [[T1]]
27 // CHECK-NEXT: }
28 }
29
~A()30 A::~A() {
31 // Make sure that the destructor doesn't call itself:
32 // CHECK: define {{.*}} @"\01??1A@basic@@QAE@XZ"
33 // CHECK-NOT: call void @"\01??1A@basic@@QAE@XZ"
34 // CHECK: ret
35 }
36
37 struct B {
38 B();
39 };
40
41 // Tests that we can define constructors outside the class (PR12784).
B()42 B::B() {
43 // CHECK: define x86_thiscallcc %"struct.basic::B"* @"\01??0B@basic@@QAE@XZ"(%"struct.basic::B"* returned %this)
44 // CHECK: ret
45 }
46
47 struct C {
~Cbasic::C48 virtual ~C() {
49 // DTORS: define linkonce_odr x86_thiscallcc i8* @"\01??_GC@basic@@UAEPAXI@Z"(%"struct.basic::C"* %this, i32 %should_call_delete)
50 // DTORS: store i32 %should_call_delete, i32* %[[SHOULD_DELETE_VAR:[0-9a-z._]+]], align 4
51 // DTORS: store i8* %{{.*}}, i8** %[[RETVAL:[0-9a-z._]+]]
52 // DTORS: %[[SHOULD_DELETE_VALUE:[0-9a-z._]+]] = load i32* %[[SHOULD_DELETE_VAR]]
53 // DTORS: call x86_thiscallcc void @"\01??1C@basic@@UAE@XZ"(%"struct.basic::C"* %[[THIS:[0-9a-z]+]])
54 // DTORS-NEXT: %[[CONDITION:[0-9]+]] = icmp eq i32 %[[SHOULD_DELETE_VALUE]], 0
55 // DTORS-NEXT: br i1 %[[CONDITION]], label %[[CONTINUE_LABEL:[0-9a-z._]+]], label %[[CALL_DELETE_LABEL:[0-9a-z._]+]]
56 //
57 // DTORS: [[CALL_DELETE_LABEL]]
58 // DTORS-NEXT: %[[THIS_AS_VOID:[0-9a-z]+]] = bitcast %"struct.basic::C"* %[[THIS]] to i8*
59 // DTORS-NEXT: call void @"\01??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]])
60 // DTORS-NEXT: br label %[[CONTINUE_LABEL]]
61 //
62 // DTORS: [[CONTINUE_LABEL]]
63 // DTORS-NEXT: %[[RET:.*]] = load i8** %[[RETVAL]]
64 // DTORS-NEXT: ret i8* %[[RET]]
65
66 // Check that we do the mangling correctly on x64.
67 // DTORS-X64: @"\01??_GC@basic@@UEAAPEAXI@Z"
68 }
69 virtual void foo();
70 };
71
72 // Emits the vftable in the output.
foo()73 void C::foo() {}
74
check_vftable_offset()75 void check_vftable_offset() {
76 C c;
77 // The vftable pointer should point at the beginning of the vftable.
78 // CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to i32 (...)***
79 // CHECK: store i32 (...)** bitcast ([2 x i8*]* @"\01??_7C@basic@@6B@" to i32 (...)**), i32 (...)*** [[THIS_PTR]]
80 }
81
call_complete_dtor(C * obj_ptr)82 void call_complete_dtor(C *obj_ptr) {
83 // CHECK: define void @"\01?call_complete_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
84 obj_ptr->~C();
85 // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"** %{{.*}}, align 4
86 // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
87 // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
88 // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
89 // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
90 // CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
91 // CHECK-NEXT: ret void
92 }
93
call_deleting_dtor(C * obj_ptr)94 void call_deleting_dtor(C *obj_ptr) {
95 // CHECK: define void @"\01?call_deleting_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
96 delete obj_ptr;
97 // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"** %{{.*}}, align 4
98 // CHECK: br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
99
100 // CHECK: [[DELETE_NOTNULL]]
101 // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
102 // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
103 // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
104 // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
105 // CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 1)
106 // CHECK: ret void
107 }
108
call_deleting_dtor_and_global_delete(C * obj_ptr)109 void call_deleting_dtor_and_global_delete(C *obj_ptr) {
110 // CHECK: define void @"\01?call_deleting_dtor_and_global_delete@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr)
111 ::delete obj_ptr;
112 // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"** %{{.*}}, align 4
113 // CHECK: br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]]
114
115 // CHECK: [[DELETE_NOTNULL]]
116 // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)***
117 // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]]
118 // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0
119 // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]]
120 // CHECK-NEXT: %[[CALL:.*]] = call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0)
121 // CHECK-NEXT: call void @"\01??3@YAXPAX@Z"(i8* %[[CALL]])
122 // CHECK: ret void
123 }
124
125 struct D {
126 static int foo();
127
Dbasic::D128 D() {
129 static int ctor_static = foo();
130 // CHECK that the static in the ctor gets mangled correctly:
131 // CHECK: @"\01?ctor_static@?1???0D@basic@@QAE@XZ@4HA"
132 }
~Dbasic::D133 ~D() {
134 static int dtor_static = foo();
135 // CHECK that the static in the dtor gets mangled correctly:
136 // CHECK: @"\01?dtor_static@?1???1D@basic@@QAE@XZ@4HA"
137 }
138 };
139
use_D()140 void use_D() { D c; }
141
142 } // end namespace basic
143
144 namespace dtor_in_second_nvbase {
145
146 struct A {
147 virtual void f(); // A needs vftable to be primary.
148 };
149 struct B {
150 virtual ~B();
151 };
152 struct C : A, B {
153 virtual ~C();
154 };
155
~C()156 C::~C() {
157 // CHECK-LABEL: define x86_thiscallcc void @"\01??1C@dtor_in_second_nvbase@@UAE@XZ"
158 // CHECK: (%"struct.dtor_in_second_nvbase::C"* %this)
159 // No this adjustment!
160 // CHECK-NOT: getelementptr
161 // CHECK: load %"struct.dtor_in_second_nvbase::C"** %{{.*}}
162 // Now we this-adjust before calling ~B.
163 // CHECK: bitcast %"struct.dtor_in_second_nvbase::C"* %{{.*}} to i8*
164 // CHECK: getelementptr inbounds i8* %{{.*}}, i64 4
165 // CHECK: bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::B"*
166 // CHECK: call x86_thiscallcc void @"\01??1B@dtor_in_second_nvbase@@UAE@XZ"
167 // CHECK: (%"struct.dtor_in_second_nvbase::B"* %{{.*}})
168 // CHECK: ret void
169 }
170
foo()171 void foo() {
172 C c;
173 }
174 // DTORS2-LABEL: define linkonce_odr x86_thiscallcc i8* @"\01??_EC@dtor_in_second_nvbase@@W3AEPAXI@Z"
175 // DTORS2: (%"struct.dtor_in_second_nvbase::C"* %this, i32 %should_call_delete)
176 // Do an adjustment from B* to C*.
177 // DTORS2: getelementptr i8* %{{.*}}, i32 -4
178 // DTORS2: bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::C"*
179 // DTORS2: %[[CALL:.*]] = call x86_thiscallcc i8* @"\01??_GC@dtor_in_second_nvbase@@UAEPAXI@Z"
180 // DTORS2: ret i8* %[[CALL]]
181
182 }
183
184 namespace test2 {
185 // Just like dtor_in_second_nvbase, except put that in a vbase of a diamond.
186
187 // C's dtor is in the non-primary base.
188 struct A { virtual void f(); };
189 struct B { virtual ~B(); };
190 struct C : A, B { virtual ~C(); int c; };
191
192 // Diamond hierarchy, with C as the shared vbase.
193 struct D : virtual C { int d; };
194 struct E : virtual C { int e; };
195 struct F : D, E { ~F(); int f; };
196
~F()197 F::~F() {
198 // CHECK-LABEL: define x86_thiscallcc void @"\01??1F@test2@@UAE@XZ"(%"struct.test2::F"*)
199 // Do an adjustment from C vbase subobject to F as though F was the
200 // complete type.
201 // CHECK: getelementptr inbounds i8* %{{.*}}, i32 -20
202 // CHECK: bitcast i8* %{{.*}} to %"struct.test2::F"*
203 // CHECK: store %"struct.test2::F"*
204 }
205
foo()206 void foo() {
207 F f;
208 }
209 // DTORS3-LABEL: define linkonce_odr x86_thiscallcc void @"\01??_DF@test2@@UAE@XZ"
210 // Do an adjustment from C* to F*.
211 // DTORS3: getelementptr i8* %{{.*}}, i32 20
212 // DTORS3: bitcast i8* %{{.*}} to %"struct.test2::F"*
213 // DTORS3: call x86_thiscallcc void @"\01??1F@test2@@UAE@XZ"
214 // DTORS3: ret void
215
216 }
217
218 namespace constructors {
219
220 struct A {
Aconstructors::A221 A() {}
222 };
223
224 struct B : A {
225 B();
226 ~B();
227 };
228
B()229 B::B() {
230 // CHECK: define x86_thiscallcc %"struct.constructors::B"* @"\01??0B@constructors@@QAE@XZ"(%"struct.constructors::B"* returned %this)
231 // CHECK: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
232 // CHECK: ret
233 }
234
235 struct C : virtual A {
236 C();
237 };
238
C()239 C::C() {
240 // CHECK: define x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* returned %this, i32 %is_most_derived)
241 // TODO: make sure this works in the Release build too;
242 // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
243 // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32* %[[IS_MOST_DERIVED_VAR]]
244 // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
245 // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
246 //
247 // CHECK: [[INIT_VBASES]]
248 // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::C"* %{{.*}} to i8*
249 // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 0
250 // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
251 // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32]* @"\01??_8C@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
252 // CHECK-NEXT: bitcast %"struct.constructors::C"* %{{.*}} to i8*
253 // CHECK-NEXT: getelementptr inbounds i8* %{{.*}}, i64 4
254 // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
255 // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
256 // CHECK-NEXT: br label %[[SKIP_VBASES]]
257 //
258 // CHECK: [[SKIP_VBASES]]
259 // Class C does not define or override methods, so shouldn't change the vfptr.
260 // CHECK-NOT: @"\01??_7C@constructors@@6B@"
261 // CHECK: ret
262 }
263
create_C()264 void create_C() {
265 C c;
266 // CHECK: define void @"\01?create_C@constructors@@YAXXZ"()
267 // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %c, i32 1)
268 // CHECK: ret
269 }
270
271 struct D : C {
272 D();
273 };
274
D()275 D::D() {
276 // CHECK: define x86_thiscallcc %"struct.constructors::D"* @"\01??0D@constructors@@QAE@XZ"(%"struct.constructors::D"* returned %this, i32 %is_most_derived) unnamed_addr
277 // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
278 // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32* %[[IS_MOST_DERIVED_VAR]]
279 // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
280 // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
281 //
282 // CHECK: [[INIT_VBASES]]
283 // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::D"* %{{.*}} to i8*
284 // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 0
285 // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
286 // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32]* @"\01??_8D@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]]
287 // CHECK-NEXT: bitcast %"struct.constructors::D"* %{{.*}} to i8*
288 // CHECK-NEXT: getelementptr inbounds i8* %{{.*}}, i64 4
289 // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
290 // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
291 // CHECK-NEXT: br label %[[SKIP_VBASES]]
292 //
293 // CHECK: [[SKIP_VBASES]]
294 // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
295 // CHECK: ret
296 }
297
298 struct E : virtual C {
299 E();
300 };
301
E()302 E::E() {
303 // CHECK: define x86_thiscallcc %"struct.constructors::E"* @"\01??0E@constructors@@QAE@XZ"(%"struct.constructors::E"* returned %this, i32 %is_most_derived) unnamed_addr
304 // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
305 // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32* %[[IS_MOST_DERIVED_VAR]]
306 // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
307 // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
308 //
309 // CHECK: [[INIT_VBASES]]
310 // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::E"* %{{.*}} to i8*
311 // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 0
312 // CHECK-NEXT: %[[vbptr_E:.*]] = bitcast i8* %[[offs]] to i32**
313 // CHECK-NEXT: store i32* getelementptr inbounds ([3 x i32]* @"\01??_8E@constructors@@7B01@@", i32 0, i32 0), i32** %[[vbptr_E]]
314 // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8* %[[this_i8]], i64 4
315 // CHECK-NEXT: %[[vbptr_C:.*]] = bitcast i8* %[[offs]] to i32**
316 // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32]* @"\01??_8E@constructors@@7BC@1@@", i32 0, i32 0), i32** %[[vbptr_C]]
317 // CHECK-NEXT: bitcast %"struct.constructors::E"* %{{.*}} to i8*
318 // CHECK-NEXT: getelementptr inbounds i8* %{{.*}}, i64 4
319 // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"*
320 // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"\01??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}})
321 // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"\01??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0)
322 // CHECK-NEXT: br label %[[SKIP_VBASES]]
323 //
324 // CHECK: [[SKIP_VBASES]]
325 // CHECK: ret
326 }
327
328 // PR16735 - even abstract classes should have a constructor emitted.
329 struct F {
330 F();
331 virtual void f() = 0;
332 };
333
F()334 F::F() {}
335 // CHECK: define x86_thiscallcc %"struct.constructors::F"* @"\01??0F@constructors@@QAE@XZ"
336
337 } // end namespace constructors
338
339 namespace dtors {
340
341 struct A {
342 ~A();
343 };
344
call_nv_complete(A * a)345 void call_nv_complete(A *a) {
346 a->~A();
347 // CHECK: define void @"\01?call_nv_complete@dtors@@YAXPAUA@1@@Z"
348 // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
349 // CHECK: ret
350 }
351
352 // CHECK: declare x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
353
354 // Now try some virtual bases, where we need the complete dtor.
355
356 struct B : virtual A { ~B(); };
357 struct C : virtual A { ~C(); };
358 struct D : B, C { ~D(); };
359
call_vbase_complete(D * d)360 void call_vbase_complete(D *d) {
361 d->~D();
362 // CHECK: define void @"\01?call_vbase_complete@dtors@@YAXPAUD@1@@Z"
363 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
364 // CHECK: ret
365 }
366
367 // The complete dtor should call the base dtors for D and the vbase A (once).
368 // CHECK: define linkonce_odr x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"
369 // CHECK-NOT: call
370 // CHECK: call x86_thiscallcc void @"\01??1D@dtors@@QAE@XZ"
371 // CHECK-NOT: call
372 // CHECK: call x86_thiscallcc void @"\01??1A@dtors@@QAE@XZ"
373 // CHECK-NOT: call
374 // CHECK: ret
375
destroy_d_complete()376 void destroy_d_complete() {
377 D d;
378 // CHECK: define void @"\01?destroy_d_complete@dtors@@YAXXZ"
379 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
380 // CHECK: ret
381 }
382
383 // FIXME: Clang manually inlines the deletion, so we don't get a call to the
384 // deleting dtor (_G). The only way to call deleting dtors currently is through
385 // a vftable.
call_nv_deleting_dtor(D * d)386 void call_nv_deleting_dtor(D *d) {
387 delete d;
388 // CHECK: define void @"\01?call_nv_deleting_dtor@dtors@@YAXPAUD@1@@Z"
389 // CHECK: call x86_thiscallcc void @"\01??_DD@dtors@@QAE@XZ"(%"struct.dtors::D"* %{{[^,]+}})
390 // CHECK: call void @"\01??3@YAXPAX@Z"
391 // CHECK: ret
392 }
393
394 }
395
396 namespace test1 {
397 struct A { };
398 struct B : virtual A {
399 B(int *a);
400 B(const char *a, ...);
401 __cdecl B(short *a);
402 };
B(int * a)403 B::B(int *a) {}
B(const char * a,...)404 B::B(const char *a, ...) {}
B(short * a)405 B::B(short *a) {}
406 // CHECK: define x86_thiscallcc %"struct.test1::B"* @"\01??0B@test1@@QAE@PAH@Z"
407 // CHECK: (%"struct.test1::B"* returned %this, i32* %a, i32 %is_most_derived)
408 // CHECK: define %"struct.test1::B"* @"\01??0B@test1@@QAA@PBDZZ"
409 // CHECK: (%"struct.test1::B"* returned %this, i32 %is_most_derived, i8* %a, ...)
410
411 // FIXME: This should be x86_thiscallcc. MSVC ignores explicit CCs on structors.
412 // CHECK: define %"struct.test1::B"* @"\01??0B@test1@@QAA@PAF@Z"
413 // CHECK: (%"struct.test1::B"* returned %this, i16* %a, i32 %is_most_derived)
414
construct_b()415 void construct_b() {
416 int a;
417 B b1(&a);
418 B b2("%d %d", 1, 2);
419 }
420 // CHECK-LABEL: define void @"\01?construct_b@test1@@YAXXZ"()
421 // CHECK: call x86_thiscallcc %"struct.test1::B"* @"\01??0B@test1@@QAE@PAH@Z"
422 // CHECK: (%"struct.test1::B"* {{.*}}, i32* {{.*}}, i32 1)
423 // CHECK: call %"struct.test1::B"* (%"struct.test1::B"*, i32, i8*, ...)* @"\01??0B@test1@@QAA@PBDZZ"
424 // CHECK: (%"struct.test1::B"* {{.*}}, i32 1, i8* {{.*}}, i32 1, i32 2)
425 }
426
427 namespace implicit_copy_vtable {
428 // This was a crash that only reproduced in ABIs without key functions.
429 struct ImplicitCopy {
430 // implicit copy ctor
431 virtual ~ImplicitCopy();
432 };
CreateCopy(ImplicitCopy * a)433 void CreateCopy(ImplicitCopy *a) {
434 new ImplicitCopy(*a);
435 }
436 // CHECK: store {{.*}} @"\01??_7ImplicitCopy@implicit_copy_vtable@@6B@"
437
438 struct MoveOnly {
439 MoveOnly(MoveOnly &&o) = default;
440 virtual ~MoveOnly();
441 };
442 MoveOnly &&f();
g()443 void g() { new MoveOnly(f()); }
444 // CHECK: store {{.*}} @"\01??_7MoveOnly@implicit_copy_vtable@@6B@"
445 }
446
447 // Dtor thunks for classes in anonymous namespaces should be internal, not
448 // linkonce_odr.
449 namespace {
450 struct A {
~A__anon49af16620111::A451 virtual ~A() { }
452 };
453 }
getA()454 void *getA() {
455 return (void*)new A();
456 }
457 // CHECK: define internal x86_thiscallcc i8* @"\01??_GA@?A@@UAEPAXI@Z"
458 // CHECK: (%"struct.(anonymous namespace)::A"* %this, i32 %should_call_delete)
459 // CHECK: define internal x86_thiscallcc void @"\01??1A@?A@@UAE@XZ"
460 // CHECK: (%"struct.(anonymous namespace)::A"* %this)
461