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
|
; RUN: llc < %s | FileCheck %s --check-prefix=ASM
; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s --check-prefix=OBJ
; RUN: llc < %s | llvm-mc -filetype=obj --triple=x86_64-windows | llvm-readobj - --codeview | FileCheck %s --check-prefix=OBJ
; RUN: llc < %s -filetype=obj | obj2yaml | FileCheck %s --check-prefix=YAML
; C++ source to regenerate:
; $ cat t.cpp
; int first;
; template <typename T> struct A { static const int comdat = 3; };
; const int *middle = &A<void>::comdat;
; int last;
; $ clang t.cpp -S -emit-llvm -g -gcodeview -o t.ll
; ASM: .section .debug$S,"dr"
; ASM: .p2align 2
; ASM: .long 4 # Debug section magic
; ASM: .short {{.*-.*}} # Record length
; ASM: .short 4364 # Record kind: S_LDATA32
; ASM: .long 116 # Type
; ASM: .secrel32 "?first@@3HA" # DataOffset
; ASM: .secidx "?first@@3HA" # Segment
; ASM: .asciz "first" # Name
; ASM: .short {{.*-.*}} # Record length
; ASM: .short 4371 # Record kind: S_GTHREAD32
; ASM: .long 4097 # Type
; ASM: .secrel32 "?middle@@3PEBHEB" # DataOffset
; ASM: .secidx "?middle@@3PEBHEB" # Segment
; ASM: .asciz "middle" # Name
; ASM: .short {{.*-.*}} # Record length
; ASM: .short 4365 # Record kind: S_GDATA32
; ASM: .long 116 # Type
; ASM: .secrel32 "?last@@3HA" # DataOffset
; ASM: .secidx "?last@@3HA" # Segment
; ASM: .asciz "last" # Name
; ASM: .section .debug$S,"dr",associative,"?comdat@?$A@X@@2HB"
; ASM: .p2align 2
; ASM: .long 4 # Debug section magic
; ASM: .short {{.*-.*}} # Record length
; ASM: .short 4365 # Record kind: S_GDATA32
; ASM: .long 4096 # Type
; ASM: .secrel32 "?comdat@?$A@X@@2HB" # DataOffset
; ASM: .secidx "?comdat@?$A@X@@2HB" # Segment
; ASM: .asciz "comdat" # Name
; OBJ: CodeViewTypes [
; OBJ: Section: .debug$T
; OBJ: Magic: 0x4
; OBJ: Modifier (0x1000) {
; OBJ: TypeLeafKind: LF_MODIFIER (0x1001)
; OBJ: ModifiedType: int (0x74)
; OBJ: Modifiers [ (0x1)
; OBJ: Const (0x1)
; OBJ: ]
; OBJ: }
; OBJ: Pointer (0x1001) {
; OBJ: TypeLeafKind: LF_POINTER (0x1002)
; OBJ: PointeeType: const int (0x1000)
; OBJ: PtrType: Near64 (0xC)
; OBJ: PtrMode: Pointer (0x0)
; OBJ: IsFlat: 0
; OBJ: IsConst: 0
; OBJ: IsVolatile: 0
; OBJ: IsUnaligned: 0
; OBJ: }
; OBJ: ]
; OBJ: CodeViewDebugInfo [
; OBJ: Section: .debug$S
; OBJ: Magic: 0x4
; OBJ: Subsection [
; OBJ: SubSectionType: Symbols (0xF1)
; OBJ: DataSym {
; OBJ: Kind: S_LDATA32 (0x110C)
; OBJ: DataOffset: ?first@@3HA+0x0
; OBJ: Type: int (0x74)
; OBJ: DisplayName: first
; OBJ: LinkageName: ?first@@3HA
; OBJ: }
; OBJ: GlobalTLS {
; OBJ: DataOffset: ?middle@@3PEBHEB+0x0
; OBJ: Type: const int* (0x1001)
; OBJ: DisplayName: middle
; OBJ: LinkageName: ?middle@@3PEBHEB
; OBJ: }
; OBJ: GlobalData {
; OBJ: Kind: S_GDATA32 (0x110D)
; OBJ: DataOffset: ?last@@3HA+0x0
; OBJ: Type: int (0x74)
; OBJ: DisplayName: last
; OBJ: LinkageName: ?last@@3HA
; OBJ: }
; OBJ: ]
; OBJ: ]
; OBJ: CodeViewDebugInfo [
; OBJ: Section: .debug$S
; OBJ: Magic: 0x4
; OBJ: Subsection [
; OBJ: SubSectionType: Symbols (0xF1)
; OBJ: GlobalData {
; OBJ: DataOffset: ?comdat@?$A@X@@2HB+0x0
; OBJ: Type: const int (0x1000)
; OBJ: DisplayName: comdat
; OBJ: LinkageName: ?comdat@?$A@X@@2HB
; OBJ: }
; OBJ: ]
; OBJ: ]
; YAML-LABEL: - Name: '.debug$S'
; YAML: Subsections:
; YAML: - !Symbols
; YAML: Records:
; YAML: - Kind: S_COMPILE3
; YAML: Compile3Sym:
; YAML: - !Symbols
; YAML: Records:
; YAML: - Kind: S_LDATA32
; YAML: DataSym:
; YAML-NOT: Segment
; YAML: Type: 116
; YAML-NOT: Segment
; YAML: DisplayName: first
; YAML-NOT: Segment
; YAML: - Kind: S_GTHREAD32
; YAML: ThreadLocalDataSym:
; YAML: Type: 4097
; YAML: DisplayName: middle
; YAML: - Kind: S_GDATA32
; YAML: DataSym:
; YAML-NOT: Segment
; YAML: Type: 116
; YAML-NOT: Offset
; YAML-NOT: Segment
; YAML: DisplayName: last
; YAML-NOT: Segment
; The missing offsets are represented as relocations against this section.
; YAML: Relocations:
; YAML: - VirtualAddress: 92
; YAML: SymbolName: '?first@@3HA'
; YAML: Type: IMAGE_REL_AMD64_SECREL
; YAML: - VirtualAddress: 96
; YAML: SymbolName: '?first@@3HA'
; YAML: Type: IMAGE_REL_AMD64_SECTION
; ModuleID = 't.cpp'
source_filename = "t.cpp"
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc19.0.23918"
$"\01?comdat@?$A@X@@2HB" = comdat any
@"\01?first@@3HA" = internal global i32 0, align 4, !dbg !0
@"\01?comdat@?$A@X@@2HB" = linkonce_odr constant i32 3, comdat, align 4, !dbg !6
@"\01?middle@@3PEBHEB" = thread_local global i32* @"\01?comdat@?$A@X@@2HB", align 8, !dbg !15
@"\01?last@@3HA" = global i32 0, align 4, !dbg !18
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!20, !21, !22}
!llvm.ident = !{!23}
!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "first", linkageName: "\01?first@@3HA", scope: !2, file: !3, line: 1, type: !9, isLocal: true, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.9.0 (trunk 271937)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
!4 = !{}
!5 = !{!0, !6, !15, !18}
!6 = distinct !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = !DIGlobalVariable(name: "comdat", linkageName: "\01?comdat@?$A@X@@2HB", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true, declaration: !10)
!8 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !9)
!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!10 = !DIDerivedType(tag: DW_TAG_member, name: "comdat", scope: !11, file: !3, line: 2, baseType: !8, flags: DIFlagStaticMember, extraData: i32 3)
!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A<void>", file: !3, line: 2, size: 8, align: 8, elements: !12, templateParams: !13)
!12 = !{!10}
!13 = !{!14}
!14 = !DITemplateTypeParameter(name: "T", type: null)
!15 = distinct !DIGlobalVariableExpression(var: !16, expr: !DIExpression())
!16 = !DIGlobalVariable(name: "middle", linkageName: "\01?middle@@3PEBHEB", scope: !2, file: !3, line: 3, type: !17, isLocal: false, isDefinition: true)
!17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64, align: 64)
!18 = distinct !DIGlobalVariableExpression(var: !19, expr: !DIExpression())
!19 = !DIGlobalVariable(name: "last", linkageName: "\01?last@@3HA", scope: !2, file: !3, line: 4, type: !9, isLocal: false, isDefinition: true)
!20 = !{i32 2, !"CodeView", i32 1}
!21 = !{i32 2, !"Debug Info Version", i32 3}
!22 = !{i32 1, !"PIC Level", i32 2}
!23 = !{!"clang version 3.9.0 (trunk 271937)"}
|
