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
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
// rdar://8818236
namespace rdar8818236 {
struct S {
char c2;
union {
char c;
int i;
};
};
// CHECK: @_ZN11rdar88182363fooE = global i64 4
char S::*foo = &S::c;
}
struct A {
union {
int a;
void* b;
};
A() : a(0) { }
};
A a;
namespace PR7021 {
struct X
{
union { long l; };
};
// CHECK: define void @_ZN6PR70211fENS_1XES0_
void f(X x, X z) {
X x1;
// CHECK: store i64 1, i64
x1.l = 1;
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
X x2(x1);
X x3;
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
x3 = x1;
// CHECK: ret void
}
}
namespace test2 {
struct A {
struct {
union {
int b;
};
};
A();
};
A::A() : b(10) { }
// CHECK: define void @_ZN5test21AC2Ev(
// CHECK-NOT: }
// CHECK: store i32 10
// CHECK: }
}
namespace test3 {
struct A {
union {
mutable char fibers[100];
struct {
void (*callback)(void*);
void *callback_value;
};
};
A();
};
A::A() : callback(0), callback_value(0) {}
// CHECK: define void @_ZN5test31AC2Ev(
// CHECK: [[THIS:%.*]] = load
// CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0
// CHECK-NEXT: [[STRUCT:%.*]] = bitcast {{.*}}* [[UNION]] to
// CHECK-NEXT: [[CALLBACK:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 0
// CHECK: store
// CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0
// CHECK-NEXT: [[STRUCT:%.*]] = bitcast {{.*}}* [[UNION]] to
// CHECK-NEXT: [[CVALUE:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 1
// CHECK-NEXT: store i8* null, i8** [[CVALUE]]
}
struct S {
// CHECK: store i32 42
// CHECK: store i32 55
S() : x(42), y(55) {}
union {
struct {
int x;
union { int y; };
};
};
} s;
//PR8760
template <typename T> struct Foo {
Foo() : ptr(__nullptr) {}
union {
T *ptr;
};
};
Foo<int> f;
namespace PR9683 {
struct QueueEntry {
union {
struct {
void* mPtr;
union {
unsigned mSubmissionTag;
};
};
unsigned mValue;
};
QueueEntry() {}
};
QueueEntry QE;
}
|
