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 | // RUN: FileCheck --check-prefix DTORS4 %s < %t |
9 | // |
10 | // RUN: %clang_cc1 -emit-llvm %s -o - -mconstructor-aliases -triple=x86_64-pc-win32 -fno-rtti -std=c++11 | FileCheck --check-prefix DTORS-X64 %s |
11 | |
12 | namespace basic { |
13 | |
14 | class A { |
15 | public: |
16 | A() { } |
17 | ~A(); |
18 | }; |
19 | |
20 | void no_constructor_destructor_infinite_recursion() { |
21 | A a; |
22 | |
23 | // CHECK: define linkonce_odr dso_local x86_thiscallcc %"class.basic::A"* @"??0A@basic@@QAE@XZ"(%"class.basic::A"* returned %this) {{.*}} comdat {{.*}} { |
24 | // CHECK: [[THIS_ADDR:%[.0-9A-Z_a-z]+]] = alloca %"class.basic::A"*, align 4 |
25 | // CHECK-NEXT: store %"class.basic::A"* %this, %"class.basic::A"** [[THIS_ADDR]], align 4 |
26 | // CHECK-NEXT: [[T1:%[.0-9A-Z_a-z]+]] = load %"class.basic::A"*, %"class.basic::A"** [[THIS_ADDR]] |
27 | // CHECK-NEXT: ret %"class.basic::A"* [[T1]] |
28 | // CHECK-NEXT: } |
29 | } |
30 | |
31 | A::~A() { |
32 | // Make sure that the destructor doesn't call itself: |
33 | // CHECK: define {{.*}} @"??1A@basic@@QAE@XZ" |
34 | // CHECK-NOT: call void @"??1A@basic@@QAE@XZ" |
35 | // CHECK: ret |
36 | } |
37 | |
38 | struct B { |
39 | B(); |
40 | }; |
41 | |
42 | // Tests that we can define constructors outside the class (PR12784). |
43 | B::B() { |
44 | // CHECK: define dso_local x86_thiscallcc %"struct.basic::B"* @"??0B@basic@@QAE@XZ"(%"struct.basic::B"* returned %this) |
45 | // CHECK: ret |
46 | } |
47 | |
48 | struct C { |
49 | virtual ~C() { |
50 | // DTORS: define linkonce_odr dso_local x86_thiscallcc i8* @"??_GC@basic@@UAEPAXI@Z"(%"struct.basic::C"* %this, i32 %should_call_delete) {{.*}} comdat {{.*}} { |
51 | // DTORS: store i32 %should_call_delete, i32* %[[SHOULD_DELETE_VAR:[0-9a-z._]+]], align 4 |
52 | // DTORS: store i8* %{{.*}}, i8** %[[RETVAL:[0-9a-z._]+]] |
53 | // DTORS: %[[SHOULD_DELETE_VALUE:[0-9a-z._]+]] = load i32, i32* %[[SHOULD_DELETE_VAR]] |
54 | // DTORS: call x86_thiscallcc void @"??1C@basic@@UAE@XZ"(%"struct.basic::C"* %[[THIS:[0-9a-z]+]]) |
55 | // DTORS-NEXT: %[[CONDITION:[0-9]+]] = icmp eq i32 %[[SHOULD_DELETE_VALUE]], 0 |
56 | // DTORS-NEXT: br i1 %[[CONDITION]], label %[[CONTINUE_LABEL:[0-9a-z._]+]], label %[[CALL_DELETE_LABEL:[0-9a-z._]+]] |
57 | // |
58 | // DTORS: [[CALL_DELETE_LABEL]] |
59 | // DTORS-NEXT: %[[THIS_AS_VOID:[0-9a-z]+]] = bitcast %"struct.basic::C"* %[[THIS]] to i8* |
60 | // DTORS-NEXT: call void @"??3@YAXPAX@Z"(i8* %[[THIS_AS_VOID]]) |
61 | // DTORS-NEXT: br label %[[CONTINUE_LABEL]] |
62 | // |
63 | // DTORS: [[CONTINUE_LABEL]] |
64 | // DTORS-NEXT: %[[RET:.*]] = load i8*, i8** %[[RETVAL]] |
65 | // DTORS-NEXT: ret i8* %[[RET]] |
66 | |
67 | // Check that we do the mangling correctly on x64. |
68 | // DTORS-X64: @"??_GC@basic@@UEAAPEAXI@Z" |
69 | } |
70 | virtual void foo(); |
71 | }; |
72 | |
73 | // Emits the vftable in the output. |
74 | void C::foo() {} |
75 | |
76 | void check_vftable_offset() { |
77 | C c; |
78 | // The vftable pointer should point at the beginning of the vftable. |
79 | // CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to i32 (...)*** |
80 | // CHECK: store i32 (...)** bitcast ({ [2 x i8*] }* @"??_7C@basic@@6B@" to i32 (...)**), i32 (...)*** [[THIS_PTR]] |
81 | } |
82 | |
83 | void call_complete_dtor(C *obj_ptr) { |
84 | // CHECK: define dso_local void @"?call_complete_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr) |
85 | obj_ptr->~C(); |
86 | // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4 |
87 | // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)*** |
88 | // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]] |
89 | // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0 |
90 | // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]] |
91 | // CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0) |
92 | // CHECK-NEXT: ret void |
93 | } |
94 | |
95 | void call_deleting_dtor(C *obj_ptr) { |
96 | // CHECK: define dso_local void @"?call_deleting_dtor@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr) |
97 | delete obj_ptr; |
98 | // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4 |
99 | // CHECK: br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]] |
100 | |
101 | // CHECK: [[DELETE_NOTNULL]] |
102 | // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)*** |
103 | // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]] |
104 | // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0 |
105 | // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]] |
106 | // CHECK-NEXT: call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 1) |
107 | // CHECK: ret void |
108 | } |
109 | |
110 | void call_deleting_dtor_and_global_delete(C *obj_ptr) { |
111 | // CHECK: define dso_local void @"?call_deleting_dtor_and_global_delete@basic@@YAXPAUC@1@@Z"(%"struct.basic::C"* %obj_ptr) |
112 | ::delete obj_ptr; |
113 | // CHECK: %[[OBJ_PTR_VALUE:.*]] = load %"struct.basic::C"*, %"struct.basic::C"** %{{.*}}, align 4 |
114 | // CHECK: br i1 {{.*}}, label %[[DELETE_NULL:.*]], label %[[DELETE_NOTNULL:.*]] |
115 | |
116 | // CHECK: [[DELETE_NOTNULL]] |
117 | // CHECK-NEXT: %[[PVTABLE:.*]] = bitcast %"struct.basic::C"* %[[OBJ_PTR_VALUE]] to i8* (%"struct.basic::C"*, i32)*** |
118 | // CHECK-NEXT: %[[VTABLE:.*]] = load i8* (%"struct.basic::C"*, i32)**, i8* (%"struct.basic::C"*, i32)*** %[[PVTABLE]] |
119 | // CHECK-NEXT: %[[PVDTOR:.*]] = getelementptr inbounds i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[VTABLE]], i64 0 |
120 | // CHECK-NEXT: %[[VDTOR:.*]] = load i8* (%"struct.basic::C"*, i32)*, i8* (%"struct.basic::C"*, i32)** %[[PVDTOR]] |
121 | // CHECK-NEXT: %[[CALL:.*]] = call x86_thiscallcc i8* %[[VDTOR]](%"struct.basic::C"* %[[OBJ_PTR_VALUE]], i32 0) |
122 | // CHECK-NEXT: call void @"??3@YAXPAX@Z"(i8* %[[CALL]]) |
123 | // CHECK: ret void |
124 | } |
125 | |
126 | struct D { |
127 | static int foo(); |
128 | |
129 | D() { |
130 | static int ctor_static = foo(); |
131 | // CHECK that the static in the ctor gets mangled correctly: |
132 | // CHECK: @"?ctor_static@?1???0D@basic@@QAE@XZ@4HA" |
133 | } |
134 | ~D() { |
135 | static int dtor_static = foo(); |
136 | // CHECK that the static in the dtor gets mangled correctly: |
137 | // CHECK: @"?dtor_static@?1???1D@basic@@QAE@XZ@4HA" |
138 | } |
139 | }; |
140 | |
141 | void use_D() { D c; } |
142 | |
143 | } // end namespace basic |
144 | |
145 | namespace dtor_in_second_nvbase { |
146 | |
147 | struct A { |
148 | virtual void f(); // A needs vftable to be primary. |
149 | }; |
150 | struct B { |
151 | virtual ~B(); |
152 | }; |
153 | struct C : A, B { |
154 | virtual ~C(); |
155 | }; |
156 | |
157 | C::~C() { |
158 | // CHECK-LABEL: define dso_local x86_thiscallcc void @"??1C@dtor_in_second_nvbase@@UAE@XZ" |
159 | // CHECK: (%"struct.dtor_in_second_nvbase::C"* %this) |
160 | // No this adjustment! |
161 | // CHECK-NOT: getelementptr |
162 | // CHECK: load %"struct.dtor_in_second_nvbase::C"*, %"struct.dtor_in_second_nvbase::C"** %{{.*}} |
163 | // Now we this-adjust before calling ~B. |
164 | // CHECK: bitcast %"struct.dtor_in_second_nvbase::C"* %{{.*}} to i8* |
165 | // CHECK: getelementptr inbounds i8, i8* %{{.*}}, i32 4 |
166 | // CHECK: bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::B"* |
167 | // CHECK: call x86_thiscallcc void @"??1B@dtor_in_second_nvbase@@UAE@XZ" |
168 | // CHECK: (%"struct.dtor_in_second_nvbase::B"* %{{.*}}) |
169 | // CHECK: ret void |
170 | } |
171 | |
172 | void foo() { |
173 | C c; |
174 | } |
175 | // DTORS2-LABEL: define linkonce_odr dso_local x86_thiscallcc i8* @"??_EC@dtor_in_second_nvbase@@W3AEPAXI@Z" |
176 | // DTORS2: (%"struct.dtor_in_second_nvbase::C"* %this, i32 %should_call_delete) |
177 | // Do an adjustment from B* to C*. |
178 | // DTORS2: getelementptr i8, i8* %{{.*}}, i32 -4 |
179 | // DTORS2: bitcast i8* %{{.*}} to %"struct.dtor_in_second_nvbase::C"* |
180 | // DTORS2: %[[CALL:.*]] = tail call x86_thiscallcc i8* @"??_GC@dtor_in_second_nvbase@@UAEPAXI@Z" |
181 | // DTORS2: ret i8* %[[CALL]] |
182 | |
183 | } |
184 | |
185 | namespace test2 { |
186 | // Just like dtor_in_second_nvbase, except put that in a vbase of a diamond. |
187 | |
188 | // C's dtor is in the non-primary base. |
189 | struct A { virtual void f(); }; |
190 | struct B { virtual ~B(); }; |
191 | struct C : A, B { virtual ~C(); int c; }; |
192 | |
193 | // Diamond hierarchy, with C as the shared vbase. |
194 | struct D : virtual C { int d; }; |
195 | struct E : virtual C { int e; }; |
196 | struct F : D, E { ~F(); int f; }; |
197 | |
198 | F::~F() { |
199 | // CHECK-LABEL: define dso_local x86_thiscallcc void @"??1F@test2@@UAE@XZ"(%"struct.test2::F"*{{[^,]*}}) |
200 | // Do an adjustment from C vbase subobject to F as though F was the |
201 | // complete type. |
202 | // CHECK: getelementptr inbounds i8, i8* %{{.*}}, i32 -20 |
203 | // CHECK: bitcast i8* %{{.*}} to %"struct.test2::F"* |
204 | // CHECK: store %"struct.test2::F"* |
205 | } |
206 | |
207 | void foo() { |
208 | F f; |
209 | } |
210 | // DTORS3-LABEL: define linkonce_odr dso_local x86_thiscallcc void @"??_DF@test2@@QAEXXZ"({{.*}} {{.*}} comdat |
211 | // Do an adjustment from C* to F*. |
212 | // DTORS3: getelementptr i8, i8* %{{.*}}, i32 20 |
213 | // DTORS3: bitcast i8* %{{.*}} to %"struct.test2::F"* |
214 | // DTORS3: call x86_thiscallcc void @"??1F@test2@@UAE@XZ" |
215 | // DTORS3: ret void |
216 | |
217 | } |
218 | |
219 | namespace constructors { |
220 | |
221 | struct A { |
222 | A() {} |
223 | }; |
224 | |
225 | struct B : A { |
226 | B(); |
227 | ~B(); |
228 | }; |
229 | |
230 | B::B() { |
231 | // CHECK: define dso_local x86_thiscallcc %"struct.constructors::B"* @"??0B@constructors@@QAE@XZ"(%"struct.constructors::B"* returned %this) |
232 | // CHECK: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
233 | // CHECK: ret |
234 | } |
235 | |
236 | struct C : virtual A { |
237 | C(); |
238 | }; |
239 | |
240 | C::C() { |
241 | // CHECK: define dso_local x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* returned %this, i32 %is_most_derived) |
242 | // TODO: make sure this works in the Release build too; |
243 | // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4 |
244 | // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]] |
245 | // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0 |
246 | // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]] |
247 | // |
248 | // CHECK: [[INIT_VBASES]] |
249 | // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::C"* %{{.*}} to i8* |
250 | // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0 |
251 | // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32** |
252 | // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8C@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]] |
253 | // CHECK-NEXT: bitcast %"struct.constructors::C"* %{{.*}} to i8* |
254 | // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4 |
255 | // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"* |
256 | // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
257 | // CHECK-NEXT: br label %[[SKIP_VBASES]] |
258 | // |
259 | // CHECK: [[SKIP_VBASES]] |
260 | // Class C does not define or override methods, so shouldn't change the vfptr. |
261 | // CHECK-NOT: @"??_7C@constructors@@6B@" |
262 | // CHECK: ret |
263 | } |
264 | |
265 | void create_C() { |
266 | C c; |
267 | // CHECK: define dso_local void @"?create_C@constructors@@YAXXZ"() |
268 | // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %c, i32 1) |
269 | // CHECK: ret |
270 | } |
271 | |
272 | struct D : C { |
273 | D(); |
274 | }; |
275 | |
276 | D::D() { |
277 | // CHECK: define dso_local x86_thiscallcc %"struct.constructors::D"* @"??0D@constructors@@QAE@XZ"(%"struct.constructors::D"* returned %this, i32 %is_most_derived) unnamed_addr |
278 | // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4 |
279 | // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]] |
280 | // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0 |
281 | // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]] |
282 | // |
283 | // CHECK: [[INIT_VBASES]] |
284 | // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::D"* %{{.*}} to i8* |
285 | // CHECK-NEXT: %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0 |
286 | // CHECK-NEXT: %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32** |
287 | // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8D@constructors@@7B@", i32 0, i32 0), i32** %[[vbptr]] |
288 | // CHECK-NEXT: bitcast %"struct.constructors::D"* %{{.*}} to i8* |
289 | // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4 |
290 | // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"* |
291 | // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
292 | // CHECK-NEXT: br label %[[SKIP_VBASES]] |
293 | // |
294 | // CHECK: [[SKIP_VBASES]] |
295 | // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0) |
296 | // CHECK: ret |
297 | } |
298 | |
299 | struct E : virtual C { |
300 | E(); |
301 | }; |
302 | |
303 | E::E() { |
304 | // CHECK: define dso_local x86_thiscallcc %"struct.constructors::E"* @"??0E@constructors@@QAE@XZ"(%"struct.constructors::E"* returned %this, i32 %is_most_derived) unnamed_addr |
305 | // CHECK: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4 |
306 | // CHECK: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]] |
307 | // CHECK: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0 |
308 | // CHECK: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]] |
309 | // |
310 | // CHECK: [[INIT_VBASES]] |
311 | // CHECK-NEXT: %[[this_i8:.*]] = bitcast %"struct.constructors::E"* %{{.*}} to i8* |
312 | // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 0 |
313 | // CHECK-NEXT: %[[vbptr_E:.*]] = bitcast i8* %[[offs]] to i32** |
314 | // CHECK-NEXT: store i32* getelementptr inbounds ([3 x i32], [3 x i32]* @"??_8E@constructors@@7B01@@", i32 0, i32 0), i32** %[[vbptr_E]] |
315 | // CHECK-NEXT: %[[offs:.*]] = getelementptr inbounds i8, i8* %[[this_i8]], i32 4 |
316 | // CHECK-NEXT: %[[vbptr_C:.*]] = bitcast i8* %[[offs]] to i32** |
317 | // CHECK-NEXT: store i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8E@constructors@@7BC@1@@", i32 0, i32 0), i32** %[[vbptr_C]] |
318 | // CHECK-NEXT: bitcast %"struct.constructors::E"* %{{.*}} to i8* |
319 | // CHECK-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i32 4 |
320 | // CHECK-NEXT: bitcast i8* %{{.*}} to %"struct.constructors::A"* |
321 | // CHECK-NEXT: call x86_thiscallcc %"struct.constructors::A"* @"??0A@constructors@@QAE@XZ"(%"struct.constructors::A"* %{{.*}}) |
322 | // CHECK: call x86_thiscallcc %"struct.constructors::C"* @"??0C@constructors@@QAE@XZ"(%"struct.constructors::C"* %{{.*}}, i32 0) |
323 | // CHECK-NEXT: br label %[[SKIP_VBASES]] |
324 | // |
325 | // CHECK: [[SKIP_VBASES]] |
326 | // CHECK: ret |
327 | } |
328 | |
329 | // PR16735 - even abstract classes should have a constructor emitted. |
330 | struct F { |
331 | F(); |
332 | virtual void f() = 0; |
333 | }; |
334 | |
335 | F::F() {} |
336 | // CHECK: define dso_local x86_thiscallcc %"struct.constructors::F"* @"??0F@constructors@@QAE@XZ" |
337 | |
338 | } // end namespace constructors |
339 | |
340 | namespace dtors { |
341 | |
342 | struct A { |
343 | ~A(); |
344 | }; |
345 | |
346 | void call_nv_complete(A *a) { |
347 | a->~A(); |
348 | // CHECK: define dso_local void @"?call_nv_complete@dtors@@YAXPAUA@1@@Z" |
349 | // CHECK: call x86_thiscallcc void @"??1A@dtors@@QAE@XZ" |
350 | // CHECK: ret |
351 | } |
352 | |
353 | // CHECK: declare dso_local x86_thiscallcc void @"??1A@dtors@@QAE@XZ" |
354 | |
355 | // Now try some virtual bases, where we need the complete dtor. |
356 | |
357 | struct B : virtual A { ~B(); }; |
358 | struct C : virtual A { ~C(); }; |
359 | struct D : B, C { ~D(); }; |
360 | |
361 | void call_vbase_complete(D *d) { |
362 | d->~D(); |
363 | // CHECK: define dso_local void @"?call_vbase_complete@dtors@@YAXPAUD@1@@Z" |
364 | // CHECK: call x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"(%"struct.dtors::D"* %{{[^,]+}}) |
365 | // CHECK: ret |
366 | } |
367 | |
368 | // The complete dtor should call the base dtors for D and the vbase A (once). |
369 | // CHECK: define linkonce_odr dso_local x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"({{.*}}) {{.*}} comdat |
370 | // CHECK-NOT: call |
371 | // CHECK: call x86_thiscallcc void @"??1D@dtors@@QAE@XZ" |
372 | // CHECK-NOT: call |
373 | // CHECK: call x86_thiscallcc void @"??1A@dtors@@QAE@XZ" |
374 | // CHECK-NOT: call |
375 | // CHECK: ret |
376 | |
377 | void destroy_d_complete() { |
378 | D d; |
379 | // CHECK: define dso_local void @"?destroy_d_complete@dtors@@YAXXZ" |
380 | // CHECK: call x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"(%"struct.dtors::D"* %{{[^,]+}}) |
381 | // CHECK: ret |
382 | } |
383 | |
384 | // FIXME: Clang manually inlines the deletion, so we don't get a call to the |
385 | // deleting dtor (_G). The only way to call deleting dtors currently is through |
386 | // a vftable. |
387 | void call_nv_deleting_dtor(D *d) { |
388 | delete d; |
389 | // CHECK: define dso_local void @"?call_nv_deleting_dtor@dtors@@YAXPAUD@1@@Z" |
390 | // CHECK: call x86_thiscallcc void @"??_DD@dtors@@QAEXXZ"(%"struct.dtors::D"* %{{[^,]+}}) |
391 | // CHECK: call void @"??3@YAXPAX@Z" |
392 | // CHECK: ret |
393 | } |
394 | |
395 | } |
396 | |
397 | namespace test1 { |
398 | struct A { }; |
399 | struct B : virtual A { |
400 | B(int *a); |
401 | B(const char *a, ...); |
402 | __cdecl B(short *a); |
403 | }; |
404 | B::B(int *a) {} |
405 | B::B(const char *a, ...) {} |
406 | B::B(short *a) {} |
407 | // CHECK: define dso_local x86_thiscallcc %"struct.test1::B"* @"??0B@test1@@QAE@PAH@Z" |
408 | // CHECK: (%"struct.test1::B"* returned %this, i32* %a, i32 %is_most_derived) |
409 | // CHECK: define dso_local %"struct.test1::B"* @"??0B@test1@@QAA@PBDZZ" |
410 | // CHECK: (%"struct.test1::B"* returned %this, i32 %is_most_derived, i8* %a, ...) |
411 | // CHECK: define dso_local x86_thiscallcc %"struct.test1::B"* @"??0B@test1@@QAE@PAF@Z" |
412 | // CHECK: (%"struct.test1::B"* returned %this, i16* %a, i32 %is_most_derived) |
413 | |
414 | void construct_b() { |
415 | int a; |
416 | B b1(&a); |
417 | B b2("%d %d", 1, 2); |
418 | } |
419 | // CHECK-LABEL: define dso_local void @"?construct_b@test1@@YAXXZ"() |
420 | // CHECK: call x86_thiscallcc %"struct.test1::B"* @"??0B@test1@@QAE@PAH@Z" |
421 | // CHECK: (%"struct.test1::B"* {{.*}}, i32* {{.*}}, i32 1) |
422 | // CHECK: call %"struct.test1::B"* (%"struct.test1::B"*, i32, i8*, ...) @"??0B@test1@@QAA@PBDZZ" |
423 | // CHECK: (%"struct.test1::B"* {{.*}}, i32 1, i8* {{.*}}, i32 1, i32 2) |
424 | } |
425 | |
426 | namespace implicit_copy_vtable { |
427 | // This was a crash that only reproduced in ABIs without key functions. |
428 | struct ImplicitCopy { |
429 | // implicit copy ctor |
430 | virtual ~ImplicitCopy(); |
431 | }; |
432 | void CreateCopy(ImplicitCopy *a) { |
433 | new ImplicitCopy(*a); |
434 | } |
435 | // CHECK: store {{.*}} @"??_7ImplicitCopy@implicit_copy_vtable@@6B@" |
436 | |
437 | struct MoveOnly { |
438 | MoveOnly(MoveOnly &&o) = default; |
439 | virtual ~MoveOnly(); |
440 | }; |
441 | MoveOnly &&f(); |
442 | void g() { new MoveOnly(f()); } |
443 | // CHECK: store {{.*}} @"??_7MoveOnly@implicit_copy_vtable@@6B@" |
444 | } |
445 | |
446 | namespace delegating_ctor { |
447 | struct Y {}; |
448 | struct X : virtual Y { |
449 | X(int); |
450 | X(); |
451 | }; |
452 | X::X(int) : X() {} |
453 | } |
454 | // CHECK: define dso_local x86_thiscallcc %"struct.delegating_ctor::X"* @"??0X@delegating_ctor@@QAE@H@Z"( |
455 | // CHECK: %[[is_most_derived_addr:.*]] = alloca i32, align 4 |
456 | // CHECK: store i32 %is_most_derived, i32* %[[is_most_derived_addr]] |
457 | // CHECK: %[[is_most_derived:.*]] = load i32, i32* %[[is_most_derived_addr]] |
458 | // CHECK: call x86_thiscallcc {{.*}}* @"??0X@delegating_ctor@@QAE@XZ"({{.*}} i32 %[[is_most_derived]]) |
459 | |
460 | // Dtor thunks for classes in anonymous namespaces should be internal, not |
461 | // linkonce_odr. |
462 | namespace { |
463 | struct A { |
464 | virtual ~A() { } |
465 | }; |
466 | } |
467 | void *getA() { |
468 | return (void*)new A(); |
469 | } |
470 | // CHECK: define internal x86_thiscallcc i8* @"??_GA@?A0x{{[^@]*}}@@UAEPAXI@Z" |
471 | // CHECK: (%"struct.(anonymous namespace)::A"* %this, i32 %should_call_delete) |
472 | // CHECK: define internal x86_thiscallcc void @"??1A@?A0x{{[^@]*}}@@UAE@XZ" |
473 | // CHECK: (%"struct.(anonymous namespace)::A"* %this) |
474 | |
475 | // Check that we correctly transform __stdcall to __thiscall for ctors and |
476 | // dtors. |
477 | class G { |
478 | public: |
479 | __stdcall G() {}; |
480 | // DTORS4: define linkonce_odr dso_local x86_thiscallcc %class.G* @"??0G@@QAE@XZ" |
481 | __stdcall ~G() {}; |
482 | // DTORS4: define linkonce_odr dso_local x86_thiscallcc void @"??1G@@QAE@XZ" |
483 | }; |
484 | |
485 | extern void testG() { |
486 | G g; |
487 | } |
488 | |