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
| ; REQUIRES: object-emission
; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s | llvm-dwarfdump -v -debug-info - | FileCheck %s
; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s | not llvm-dwarfdump -verify - | FileCheck %s --check-prefix VERIFY
; IR generated with `clang++ -g -emit-llvm -S` from the following code:
; template<int x, int*, template<typename> class y, decltype(nullptr) n, int ...z> int func() {
; var<int> = 5;
; return var<int>;
; }
; template<typename> struct y_impl { struct nested { }; };
; int glbl = func<3, &glbl, y_impl, nullptr, 1, 2>();
; y_impl<int>::nested n;
; VERIFY-NOT: error: DIE has DW_AT_type with incompatible tag DW_TAG_unspecified_type
; VERIFY: error: DIEs have overlapping address ranges
; CHECK: [[INT:0x[0-9a-f]*]]:{{ *}}DW_TAG_base_type
; CHECK-NEXT: DW_AT_name{{.*}} = "int"
; CHECK: DW_TAG_structure_type
; CHECK: DW_AT_name{{.*}}"y_impl<int>"
; CHECK-NOT: {{TAG|NULL}}
; CHECK: DW_TAG_template_type_parameter
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_name{{.*}}"var"
; CHECK-NOT: NULL
; CHECK: DW_TAG_template_type_parameter
; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]}
; CHECK-NEXT: DW_AT_name{{.*}}= "T"
; CHECK: DW_AT_name{{.*}}"func<3, &glbl, y_impl, nullptr, 1, 2>"
; CHECK-NOT: NULL
; CHECK: DW_TAG_template_value_parameter
; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]}
; CHECK-NEXT: DW_AT_name{{.*}}= "x"
; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata]{{.*}}(3)
; CHECK: DW_TAG_template_value_parameter
; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INTPTR:0x[0-9a-f]*]]}
; The address of the global 'glbl', followed by DW_OP_stack_value (9f), to use
; the value immediately, rather than indirecting through the address.
; CHECK-NEXT: DW_AT_location [DW_FORM_exprloc]{{ *}}(DW_OP_addr 0x0, DW_OP_stack_value)
; CHECK-NOT: NULL
; CHECK: DW_TAG_GNU_template_template_param
; CHECK-NEXT: DW_AT_name{{.*}}= "y"
; CHECK-NEXT: DW_AT_GNU_template_name{{.*}}= "y_impl"
; CHECK-NOT: NULL
; CHECK: DW_TAG_template_value_parameter
; CHECK-NEXT: DW_AT_type{{.*}}=> {[[NULLPTR:0x[0-9a-f]*]]}
; CHECK-NEXT: DW_AT_name{{.*}}= "n"
; CHECK-NEXT: DW_AT_const_value [DW_FORM_udata]{{.*}}(0)
; CHECK: DW_TAG_GNU_template_parameter_pack
; CHECK-NOT: NULL
; CHECK: DW_TAG_template_value_parameter
; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]}
; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata]{{.*}}(1)
; CHECK-NOT: NULL
; CHECK: DW_TAG_template_value_parameter
; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]}
; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata]{{.*}}(2)
; CHECK: [[INTPTR]]:{{ *}}DW_TAG_pointer_type
; CHECK-NEXT: DW_AT_type{{.*}} => {[[INT]]}
; CHECK: [[NULLPTR]]:{{ *}}DW_TAG_unspecified_type
; CHECK-NEXT: DW_AT_name{{.*}}= "decltype(nullptr)"
source_filename = "test/DebugInfo/X86/template.ll"
%"struct.y_impl<int>::nested" = type { i8 }
@glbl = dso_local global i32 0, align 4, !dbg !0
@_Z3varIiE = linkonce_odr dso_local global i32 0, align 4, !dbg !13
@n = dso_local global %"struct.y_impl<int>::nested" zeroinitializer, align 1, !dbg !6
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_upstream_test.cpp, i8* null }]
; Function Attrs: noinline uwtable
define internal void @__cxx_global_var_init() #0 section ".text.startup" !dbg !21 {
entry:
%call = call i32 @_Z4funcILi3EXadL_Z4glblEE6y_implLDn0EJLi1ELi2EEEiv(), !dbg !24
store i32 %call, i32* @glbl, align 4, !dbg !24
ret void, !dbg !24
}
; Function Attrs: noinline nounwind optnone uwtable
define linkonce_odr dso_local i32 @_Z4funcILi3EXadL_Z4glblEE6y_implLDn0EJLi1ELi2EEEiv() #1 !dbg !25 {
entry:
store i32 5, i32* @_Z3varIiE, align 4, !dbg !39
%0 = load i32, i32* @_Z3varIiE, align 4, !dbg !40
ret i32 %0, !dbg !41
}
; Function Attrs: noinline uwtable
define internal void @_GLOBAL__sub_I_upstream_test.cpp() #0 section ".text.startup" !dbg !42 {
entry:
call void @__cxx_global_var_init(), !dbg !44
ret void
}
attributes #0 = { nounwind uwtable }
attributes #1 = { nounwind uwtable noinline optnone }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!17, !18, !19}
!llvm.ident = !{!20}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "glbl", scope: !2, file: !3, line: 7, type: !12, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "upstream_test.cpp", directory: "/home/mvoss/src/92562")
!4 = !{}
!5 = !{!0, !6, !13}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = distinct !DIGlobalVariable(name: "n", scope: !2, file: !3, line: 8, type: !8, isLocal: false, isDefinition: true)!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "nested", scope: !9, file: !3, line: 6, size: 8, flags: DIFlagTypePassByValue, elements: !4, identifier: "_ZTSN6y_implIiE6nestedE")
!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "y_impl<int>", file: !3, line: 6, size: 8, flags: DIFlagTypePassByValue, elements: !4, templateParams: !10, identifier: "_ZTS6y_implIiE")
!10 = !{!11}
!11 = !DITemplateTypeParameter(type: !12)
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!13 = !DIGlobalVariableExpression(var: !14, expr: !DIExpression())
!14 = distinct !DIGlobalVariable(name: "var", linkageName: "_Z3varIiE", scope: !2, file: !3, line: 1, type: !12, isLocal: false, isDefinition: true, templateParams: !15)
!15 = !{!16}
!16 = !DITemplateTypeParameter(name: "T", type: !12)
!17 = !{i32 2, !"Dwarf Version", i32 4}
!18 = !{i32 2, !"Debug Info Version", i32 3}
!19 = !{i32 1, !"wchar_size", i32 4}
!20 = !{!"clang version 7.0.0 "}
!21 = distinct !DISubprogram(name: "__cxx_global_var_init", scope: !3, file: !3, line: 7, type: !22, isLocal: true, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4)
!22 = !DISubroutineType(types: !23)
!23 = !{null}
!24 = !DILocation(line: 7, column: 12, scope: !21)
!25 = distinct !DISubprogram(name: "func<3, &glbl, y_impl, nullptr, 1, 2>", linkageName: "_Z4funcILi3EXadL_Z4glblEE6y_implLDn0EJLi1ELi2EEEiv", scope: !3, file: !3, line: 2, type: !26, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !2, templateParams: !28, retainedNodes: !4)
!26 = !DISubroutineType(types: !27)
!27 = !{!12}
!28 = !{!29, !30, !32, !33, !35}
!29 = !DITemplateValueParameter(name: "x", type: !12, value: i32 3)
!30 = !DITemplateValueParameter(type: !31, value: i32* @glbl)
!31 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
!32 = !DITemplateValueParameter(tag: DW_TAG_GNU_template_template_param, name: "y", value: !"y_impl")
!33 = !DITemplateValueParameter(name: "n", type: !34, value: i8 0)
!34 = !DIBasicType(tag: DW_TAG_unspecified_type, name: "decltype(nullptr)")
!35 = !DITemplateValueParameter(tag: DW_TAG_GNU_template_parameter_pack, name: "z", value: !36)
!36 = !{!37, !38}
!37 = !DITemplateValueParameter(type: !12, value: i32 1)
!38 = !DITemplateValueParameter(type: !12, value: i32 2)
!39 = !DILocation(line: 3, column: 12, scope: !25)
!40 = !DILocation(line: 4, column: 10, scope: !25)
!41 = !DILocation(line: 4, column: 3, scope: !25)
!42 = distinct !DISubprogram(linkageName: "_GLOBAL__sub_I_upstream_test.cpp", scope: !3, file: !3, type: !43, isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !2, retainedNodes: !4)
!43 = !DISubroutineType(types: !4)
!44 = !DILocation(line: 0, scope: !42)
|