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
|
// RUN: %clang_cc1 -x c -debug-info-kind=limited -emit-llvm -triple x86_64-apple-darwin -o - %s | FileCheck %s
// CHECK: %struct.layout3 = type <{ i8, [3 x i8], %struct.size8_pack4, i8, [3 x i8] }>
// CHECK: %struct.layout0 = type { i8, %struct.size8, i8 }
// CHECK: %struct.layout1 = type <{ i8, %struct.size8_anon, i8, [2 x i8] }>
// CHECK: %struct.layout2 = type <{ i8, %struct.size8_pack1, i8 }>
// ---------------------------------------------------------------------
// Not packed.
// ---------------------------------------------------------------------
struct size8 {
int i : 4;
long long l : 60;
};
struct layout0 {
char l0_ofs0;
struct size8 l0_ofs8;
int l0_ofs16 : 1;
};
// CHECK: l0_ofs0
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs8",
// CHECK-SAME: {{.*}}size: 64, offset: 64)
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs16",
// CHECK-SAME: {{.*}}size: 1, offset: 128, flags: DIFlagBitField, extraData: i64 128)
// ---------------------------------------------------------------------
// Implicitly packed.
// ---------------------------------------------------------------------
struct size8_anon {
int : 4;
long long : 60;
};
struct layout1 {
char l1_ofs0;
struct size8_anon l1_ofs1;
int l1_ofs9 : 1;
};
// CHECK: l1_ofs0
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs1",
// CHECK-SAME: {{.*}}size: 64, offset: 8)
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs9",
// CHECK-SAME: {{.*}}size: 1, offset: 72, flags: DIFlagBitField, extraData: i64 72)
// ---------------------------------------------------------------------
// Explicitly packed.
// ---------------------------------------------------------------------
#pragma pack(1)
struct size8_pack1 {
int i : 4;
long long l : 60;
};
struct layout2 {
char l2_ofs0;
struct size8_pack1 l2_ofs1;
int l2_ofs9 : 1;
};
#pragma pack()
// CHECK: l2_ofs0
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs1",
// CHECK-SAME: {{.*}}size: 64, offset: 8)
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs9",
// CHECK-SAME: {{.*}}size: 1, offset: 72, flags: DIFlagBitField, extraData: i64 72)
// ---------------------------------------------------------------------
// Explicitly packed with different alignment.
// ---------------------------------------------------------------------
#pragma pack(4)
struct size8_pack4 {
int i : 4;
long long l : 60;
};
struct layout3 {
char l3_ofs0;
struct size8_pack4 l3_ofs4;
int l3_ofs12 : 1;
};
#pragma pack()
// CHECK: l3_ofs0
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs4",
// CHECK-SAME: {{.*}}size: 64, offset: 32)
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs12",
// CHECK-SAME: {{.*}}size: 1, offset: 96, flags: DIFlagBitField, extraData: i64 96)
struct layout3 l3;
struct layout0 l0;
struct layout1 l1;
struct layout2 l2;
|
