blob: 8144770763dd9ab3f217f8ead7c4f66fb0f2dfa1 (
plain)
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
|
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
namespace Test1 {
// Check that we emit a non-virtual thunk for C::f.
struct A {
virtual void f();
};
struct B {
virtual void f();
};
struct C : A, B {
virtual void c();
virtual void f();
};
// CHECK: define void @_ZThn8_N5Test11C1fEv(
void C::f() { }
}
namespace Test2 {
// Check that we emit a thunk for B::f since it's overriding a virtual base.
struct A {
virtual void f();
};
struct B : virtual A {
virtual void b();
virtual void f();
};
// CHECK: define void @_ZTv0_n24_N5Test21B1fEv(
void B::f() { }
}
namespace Test3 {
// Check that we emit a covariant thunk for B::f.
struct V1 { };
struct V2 : virtual V1 { };
struct A {
virtual V1 *f();
};
struct B : A {
virtual void b();
virtual V2 *f();
};
// CHECK: define %{{.*}}* @_ZTch0_v0_n24_N5Test31B1fEv(
V2 *B::f() { return 0; }
}
namespace Test4 {
// Check that the thunk for 'C::f' has the same visibility as the function itself.
struct A {
virtual void f();
};
struct B {
virtual void f();
};
struct __attribute__((visibility("protected"))) C : A, B {
virtual void c();
virtual void f();
};
// CHECK: define protected void @_ZThn8_N5Test41C1fEv(
void C::f() { }
}
// Check that the thunk gets internal linkage.
namespace {
struct A {
virtual void f();
};
struct B {
virtual void f();
};
struct C : A, B {
virtual void c();
virtual void f();
};
void C::f() { }
}
// Force C::f to be used.
void f() {
C c;
c.f();
}
namespace Test5 {
// Check that the thunk for 'B::f' gets the same linkage as the function itself.
struct A {
virtual void f();
};
struct B : virtual A {
virtual void f() { }
};
void f(B b) {
b.f();
}
}
namespace Test6 {
struct X {
X();
X(const X&);
X &operator=(const X&);
~X();
};
struct P {
P();
P(const P&);
~P();
X first;
X second;
};
P getP();
struct Base1 {
int i;
virtual X f() { return X(); }
};
struct Base2 {
float real;
virtual X f() { return X(); }
};
struct Thunks : Base1, Base2 {
long l;
virtual X f();
};
// CHECK: define void @_ZThn16_N5Test66Thunks1fEv
// CHECK-NOT: memcpy
// CHECK: {{call void @_ZN5Test66Thunks1fEv.*sret}}
// CHECK: ret void
X Thunks::f() { return X(); }
}
// This is from Test5:
// CHECK: define linkonce_odr void @_ZTv0_n24_N5Test51B1fEv
// CHECK: define internal void @_ZThn8_N12_GLOBAL__N_11C1fEv(
|
