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
|
; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj < %s | llvm-dwarfdump -v - | \
; RUN: FileCheck --check-prefix=DEFAULT --check-prefix=BOTH %s
; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj -generate-type-units < %s | \
; RUN: llvm-dwarfdump -v - | FileCheck --check-prefix=TYPEUNITS --check-prefix=BOTH %s
;
; Check that we generate the DWARF v5 string offsets section correctly when we
; have multiple compile and type units. All units share one contribution to
; the string offsets section.
;
; Constructed from the following sources with
; clang -gdwarf-5 -emit-llvm -S a.cpp
; clang -gdwarf-5 -emit-llvm -S b.cpp
; clang -gdwarf-5 -emit-llvm -S c.cpp
; llvm-link a.ll b.ll c.ll -o test.bc
; llvm-dis test.bc -o test.ll
;
; a.cpp:
; enum E1 {a, b, c};
; E1 glob1;
;
; b.cpp:
; enum E2 {d, e, f};
; E2 glob2;
;
; c.cpp:
; enum E3 {g, h, i};
; E3 glob3;
;
; Check that all 3 compile units have the correct DW_AT_str_offsets_base attributes
; with the correct offsets. Check that strings referenced by compile units 2 and 3
; are displayed correctly.
;
; BOTH: .debug_info contents:
;
; Verify that all 3 type units have the proper DW_AT_str_offsets_base attribute.
; TYPEUNITS-NOT: contents:
; TYPEUNITS: DW_TAG_type_unit
; TYPEUNITS-NOT: {{DW_TAG|NULL}}
; TYPEUNITS: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x[[CU1_STROFF:[0-9a-f]+]])
; TYPEUNITS-NOT: NULL
; TYPEUNITS: DW_TAG_enumerator
; TYPEUNITS-NOT: NULL
; TYPEUNITS: DW_TAG_enumerator
; TYPEUNITS-NOT: {{DW_TAG|NULL}}
; TYPEUNITS: DW_AT_name [DW_FORM_strx1] (indexed (00000005) string = "b")
; TYPEUNITS-NOT: contents:
; TYPEUNITS: DW_TAG_type_unit
; TYPEUNITS-NOT: {{DW_TAG|NULL}}
; TYPEUNITS: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x[[CU1_STROFF]])
; TYPEUNITS-NOT: NULL
; TYPEUNITS: DW_TAG_enumeration_type
; TYPEUNITS: DW_AT_name [DW_FORM_strx1] (indexed (0000000d) string = "E2")
; TYPEUNITS-NOT: contents:
; TYPEUNITS: DW_TAG_type_unit
; TYPEUNITS-NOT: {{DW_TAG|NULL}}
; TYPEUNITS: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x[[CU1_STROFF]])
; TYPEUNITS-NOT: NULL
; TYPEUNITS: DW_TAG_enumeration_type
; TYPEUNITS: DW_AT_name [DW_FORM_strx1] (indexed (00000013) string = "E3")
; CU 1
; BOTH-NOT: .contents:
; BOTH: DW_TAG_compile_unit
; BOTH-NOT: {{DW_TAG|NULL}}
; DEFAULT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x[[CU1_STROFF:[0-9a-f]+]])
; TYPEUNITS: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x[[CU1_STROFF]])
;
; CU 2
; BOTH-NOT: contents:
; BOTH: DW_TAG_compile_unit
; BOTH-NOT: {{DW_TAG|NULL}}
; BOTH: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x[[CU1_STROFF]])
; BOTH-NOT: NULL
; BOTH: DW_TAG_variable
; BOTH-NOT: {{DW_TAG|NULL}}
; BOTH: DW_AT_name [DW_FORM_strx1] (indexed (00000009) string = "glob2")
;
; CU 3
; BOTH-NOT: contents:
; BOTH: DW_TAG_compile_unit
; BOTH-NOT: {{DW_TAG|NULL}}
; BOTH: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x[[CU1_STROFF]])
; BOTH-NOT: NULL
; BOTH: DW_TAG_variable
; BOTH-NOT: {{DW_TAG|NULL}}
; BOTH: DW_AT_name [DW_FORM_strx1] (indexed (0000000f) string = "glob3")
;
; Extract the offset of a string to verify that it is referenced in the string
; offsets section.
; BOTH: .debug_str contents:
; BOTH-NOT: contents:
; BOTH: 0x[[GLOB2OFF:[0-9a-f]+]]: "glob2"
;
; Check the .debug_str_offsets section header and make sure the referenced string
; has the correct offset.
; BOTH: .debug_str_offsets contents:
; BOTH-NEXT: 0x00000000: Contribution size = 84, Format = DWARF32, Version = 5
; BOTH-NEXT: 0x[[CU1_STROFF]]:
; BOTH-NEXT: {{.*:}}
; BOTH-NEXT: {{.*:}}
; BOTH-NEXT: {{.*:}}
; BOTH-NEXT: {{.*:}}
; BOTH-NEXT: {{.*:}}
; BOTH-NEXT: {{.*:}}
; BOTH-NEXT: {{.*:}}
; BOTH-NEXT: {{.*:}}
; The string with index 9 should be "glob2"
; BOTH-NEXT: {{.*:}} [[GLOB2OFF]]
;
; ModuleID = 'test.bc'
source_filename = "llvm-link"
@glob1 = global i32 0, align 4, !dbg !0
@glob2 = global i32 0, align 4, !dbg !11
@glob3 = global i32 0, align 4, !dbg !22
!llvm.dbg.cu = !{!2, !13, !24}
!llvm.ident = !{!33, !33, !33}
!llvm.module.flags = !{!34, !35, !36}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "glob1", scope: !2, file: !3, line: 2, type: !5, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 (trunk 322415)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !10)
!3 = !DIFile(filename: "a1.cpp", directory: "/home/test", checksumkind: CSK_MD5, checksum: "2ca3eeed18355d6ebbae671eafda5aae")
!4 = !{!5}
!5 = distinct !DICompositeType(tag: DW_TAG_enumeration_type, name: "E1", file: !3, line: 1, size: 32, elements: !6, identifier: "_ZTS2E1")
!6 = !{!7, !8, !9}
!7 = !DIEnumerator(name: "a", value: 0)
!8 = !DIEnumerator(name: "b", value: 1)
!9 = !DIEnumerator(name: "c", value: 2)
!10 = !{!0}
!11 = !DIGlobalVariableExpression(var: !12, expr: !DIExpression())
!12 = distinct !DIGlobalVariable(name: "glob2", scope: !13, file: !14, line: 2, type: !16, isLocal: false, isDefinition: true)
!13 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !14, producer: "clang version 7.0.0 (trunk 322415)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !15, globals: !21)
!14 = !DIFile(filename: "b.cpp", directory: "/home/test", checksumkind: CSK_MD5, checksum: "0e254f89617ecb6c4e5473546a99435c")
!15 = !{!16}
!16 = distinct !DICompositeType(tag: DW_TAG_enumeration_type, name: "E2", file: !14, line: 1, size: 32, elements: !17, identifier: "_ZTS2E2")
!17 = !{!18, !19, !20}
!18 = !DIEnumerator(name: "d", value: 0)
!19 = !DIEnumerator(name: "e", value: 1)
!20 = !DIEnumerator(name: "f", value: 2)
!21 = !{!11}
!22 = !DIGlobalVariableExpression(var: !23, expr: !DIExpression())
!23 = distinct !DIGlobalVariable(name: "glob3", scope: !24, file: !25, line: 2, type: !27, isLocal: false, isDefinition: true)
!24 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !25, producer: "clang version 7.0.0 (trunk 322415)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !26, globals: !32)
!25 = !DIFile(filename: "c.cpp", directory: "/home/test", checksumkind: CSK_MD5, checksum: "7835aaaa683fa09d295adef0e934d392")
!26 = !{!27}
!27 = distinct !DICompositeType(tag: DW_TAG_enumeration_type, name: "E3", file: !25, line: 1, size: 32, elements: !28, identifier: "_ZTS2E3")
!28 = !{!29, !30, !31}
!29 = !DIEnumerator(name: "g", value: 0)
!30 = !DIEnumerator(name: "h", value: 1)
!31 = !DIEnumerator(name: "i", value: 2)
!32 = !{!22}
!33 = !{!"clang version 7.0.0 (trunk 322415)"}
!34 = !{i32 2, !"Dwarf Version", i32 5}
!35 = !{i32 2, !"Debug Info Version", i32 3}
!36 = !{i32 1, !"wchar_size", i32 4}
|
