1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
// See Test9 for test description.
// CHECK: @_ZTTN5Test91BE = linkonce_odr unnamed_addr constant
namespace Test1 {
// Check that we don't initialize the vtable pointer in A::~A(), since the destructor body is trivial.
struct A {
virtual void f();
~A();
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test11AD2Ev
// CHECK-NOT: store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTVN5Test11AE, i64 0, i64 2), ptr
A::~A()
{
}
}
namespace Test2 {
// Check that we do initialize the vtable pointer in A::~A() since the destructor body isn't trivial.
struct A {
virtual void f();
~A();
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test21AD2Ev
// CHECK: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN5Test21AE, i32 0, i32 0, i32 2), ptr
A::~A() {
f();
}
}
namespace Test3 {
// Check that we don't initialize the vtable pointer in A::~A(), since the destructor body is trivial
// and Field's destructor body is also trivial.
struct Field {
~Field() { }
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test31AD2Ev
// CHECK-NOT: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN5Test31AE, i32 0, i32 0, i32 2), ptr
A::~A() {
}
}
namespace Test4 {
// Check that we do initialize the vtable pointer in A::~A(), since Field's destructor body
// isn't trivial.
void f();
struct Field {
~Field() { f(); }
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test41AD2Ev
// CHECK: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN5Test41AE, i32 0, i32 0, i32 2), ptr
A::~A()
{
}
}
namespace Test5 {
// Check that we do initialize the vtable pointer in A::~A(), since Field's destructor isn't
// available in this translation unit.
struct Field {
~Field();
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test51AD2Ev
// CHECK: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN5Test51AE, i32 0, i32 0, i32 2), ptr
A::~A()
{
}
}
namespace Test6 {
// Check that we do initialize the vtable pointer in A::~A(), since Field has a member
// variable with a non-trivial destructor body.
struct NonTrivialDestructorBody {
~NonTrivialDestructorBody();
};
struct Field {
NonTrivialDestructorBody nonTrivialDestructorBody;
};
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test61AD2Ev
// CHECK: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN5Test61AE, i32 0, i32 0, i32 2), ptr
A::~A()
{
}
}
namespace Test7 {
// Check that we do initialize the vtable pointer in A::~A(), since Field has a base
// class with a non-trivial destructor body.
struct NonTrivialDestructorBody {
~NonTrivialDestructorBody();
};
struct Field : NonTrivialDestructorBody { };
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test71AD2Ev
// CHECK: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN5Test71AE, i32 0, i32 0, i32 2), ptr
A::~A()
{
}
}
namespace Test8 {
// Check that we do initialize the vtable pointer in A::~A(), since Field has a virtual base
// class with a non-trivial destructor body.
struct NonTrivialDestructorBody {
~NonTrivialDestructorBody();
};
struct Field : virtual NonTrivialDestructorBody { };
struct A {
virtual void f();
~A();
Field field;
};
// CHECK-LABEL: define{{.*}} void @_ZN5Test81AD2Ev
// CHECK: store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTVN5Test81AE, i32 0, i32 0, i32 2), ptr
A::~A()
{
}
}
namespace Test9 {
// Check that we emit a VTT for B, even though we don't initialize the vtable pointer in the destructor.
struct A { virtual ~A () { } };
struct B : virtual A {};
struct C : virtual B {
virtual ~C();
};
C::~C() {}
}
namespace Test10 {
// Check that we don't initialize the vtable pointer in A::~A(), since the class has an anonymous union which
// never has its destructor invoked.
struct A {
virtual void f();
~A();
union
{
int i;
unsigned u;
};
};
// CHECK-LABEL: define{{.*}} void @_ZN6Test101AD2Ev
// CHECK-NOT: store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTVN6Test101AE, i32 0, inrange i32 0, i32 2), ptr
A::~A() {
}
}
namespace Test11 {
// Check that we don't initialize the vtable pointer in A::~A(), even if the base class has a non trivial destructor.
struct Field {
~Field();
};
struct A : public Field {
virtual void f();
~A();
};
// CHECK-LABEL: define{{.*}} void @_ZN6Test111AD2Ev
// CHECK-NOT: store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTVN6Test111AE, i32 0, inrange i32 0, i32 2), ptr
A::~A() {
}
}
namespace Test12 {
// Check that we don't initialize the vtable pointer in A::~A(), since the class has an anonymous struct with trivial fields.
struct A {
virtual void f();
~A();
struct
{
int i;
unsigned u;
};
};
// CHECK-LABEL: define{{.*}} void @_ZN6Test121AD2Ev
// CHECK-NOT: store ptr getelementptr inbounds ({ [3 x ptr] }, ptr @_ZTVN6Test121AE, i32 0, inrange i32 0, i32 2), ptr
A::~A() {
}
}
|
