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
| ; RUN: llc -split-dwarf-file=foo.dwo -O0 < %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj > %t
; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
; RUN: llvm-objdump -r %t | FileCheck --check-prefix=RELOCS %s
; Test the emission of gmlt-like inlining information into the skeleton unit.
; This allows inline-aware symbolication/backtracing given only the linked
; executable, without needing access to the .dwos.
; A simple example of inlining generated with clang -gsplit-dwarf
; A member function is used to force emission of the declaration of the
; function into the .dwo file, which may be shared with other CUs in the dwo ;
; under fission, but should not be shared with the skeleton's CU. This also
; tests the general case of context emission, which is suppressed in gmlt-like
; data.
; Include a template just to test template parameters are not emitted in
; gmlt-like data.
; And some varargs to make sure DW_TAG_unspecified_parameters is not emitted.
; And a using declaration in a nested lexical_block... because that shouldn't
; be emitted either.
; Minor complication: after generating the LLVM IR, it was manually edited so
; that the 'f1()' call from f3 was reordered to appear between the two inlined
; f1 calls from f2. This causes f2's inlined_subroutine to use DW_AT_ranges,
; thus exercising range list generation/referencing which was buggy.
; struct foo {
; template<typename T>
; static void f2();
; static void f3(...);
; };
;
; void f1();
;
; template<typename T>
; inline __attribute__((always_inline)) void foo::f2() {
; f1();
; f1();
; }
;
; void foo::f3(...) {
; if (true) {
; f1();
; f2<int>();
; using ::foo;
; }
; }
; Check that we emit the usual gmlt-like data for this file, including brief
; descriptions of subprograms with inlined scopes.
; FIXME: Once tools support indexed addresses in the skeleton CU, we should use
; those (DW_FORM_addr would become DW_FORM_GNU_addr_index below) since those
; addresses will already be in the address pool anyway.
; CHECK: DW_TAG_subprogram
; CHECK-NEXT: DW_AT_name {{.*}} "f2<int>"
; CHECK-NOT: DW_
; CHECK: DW_TAG_subprogram
; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr]
; CHECK-NEXT: DW_AT_high_pc
; CHECK-NEXT: DW_AT_name {{.*}} "f3"
; CHECK-NOT: {{DW_|NULL}}
; CHECK: DW_TAG_inlined_subroutine
; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f2<int>"
; CHECK-NEXT: DW_AT_ranges
; CHECK-NOT: {{DW_AT|DW_TAG|NULL}}
; CHECK: DW_AT_call_file
; CHECK-NEXT: DW_AT_call_line {{.*}} (18)
; CHECK-NEXT: DW_AT_call_column {{.*}} (0x05)
; CHECK: DW_AT_call_file
; CHECK-NEXT: DW_AT_call_line {{.*}} (21)
; CHECK-NOT: DW_
; CHECK: .debug_info.dwo contents:
; RELOCS-NOT: RELOCATION RECORDS FOR [.rela.debug_ranges]
; Function Attrs: uwtable
define void @_ZN3foo2f3Ez(...) #0 align 2 !dbg !10 {
entry:
call void @_Z2f1v(), !dbg !26
call void @_Z2f1v(), !dbg !25
call void @_Z2f1v(), !dbg !28
call void @_Z2f1v(), !dbg !29
ret void, !dbg !29
}
declare void @_Z2f1v() #1
attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!22, !23}
!llvm.ident = !{!24}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, splitDebugFilename: "fission-inline.dwo", emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !18)
!1 = !DIFile(filename: "fission-inline.cpp", directory: "/tmp/dbginfo")
!2 = !{}
!3 = !{!4}
!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 8, align: 8, file: !1, elements: !5, identifier: "_ZTS3foo")
!5 = !{!6}
!6 = !DISubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 4, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !4, type: !7)
!7 = !DISubroutineType(types: !8)
!8 = !{null, null}
!10 = distinct !DISubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 15, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 15, file: !1, scope: !4, type: !7, declaration: !6, retainedNodes: !2)
!11 = distinct !DISubprogram(name: "f2<int>", linkageName: "_ZN3foo2f2IiEEvv", line: 10, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !4, type: !12, templateParams: !14, declaration: !17, retainedNodes: !2)
!12 = !DISubroutineType(types: !13)
!13 = !{null}
!14 = !{!15}
!15 = !DITemplateTypeParameter(name: "T", type: !16)
!16 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!17 = !DISubprogram(name: "f2<int>", linkageName: "_ZN3foo2f2IiEEvv", line: 10, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 10, file: !1, scope: !4, type: !12, templateParams: !14)
!18 = !{!19}
!19 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !1, line: 19, scope: !20, entity: !4)
!20 = distinct !DILexicalBlock(line: 16, column: 13, file: !1, scope: !21)
!21 = distinct !DILexicalBlock(line: 16, column: 7, file: !1, scope: !10)
!22 = !{i32 2, !"Dwarf Version", i32 4}
!23 = !{i32 2, !"Debug Info Version", i32 3}
!24 = !{!"clang version 3.6.0 "}
!25 = !DILocation(line: 17, column: 5, scope: !20)
!26 = !DILocation(line: 11, column: 3, scope: !11, inlinedAt: !27)
!27 = !DILocation(line: 18, column: 5, scope: !20)
!28 = !DILocation(line: 12, column: 3, scope: !11, inlinedAt: !27)
!29 = !DILocation(line: 12, column: 3, scope: !11, inlinedAt: !30)
!30 = !DILocation(line: 21, column: 0, scope: !10)
|