1; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=Abstract < %s | llvm-dwarfdump -v -debug-info - > %t
2; RUN: FileCheck %s -check-prefix=ONENAME < %t
3; RUN: FileCheck %s -check-prefix=REF < %t
4; Verify tuning for SCE gets us Abstract only.
5; RUN: %llc_dwarf -O0 -filetype=obj -debugger-tune=sce < %s | llvm-dwarfdump -v -debug-info - > %t
6; RUN: FileCheck %s -check-prefix=ONENAME < %t
7; RUN: FileCheck %s -check-prefix=REF < %t
8
9; Verify that the only linkage-name present is the abstract origin of the
10; inlined subprogram.
11
12; IR generated from clang -O0 with:
13; void f1();
14; __attribute__((always_inline)) void f2() {
15;   f1();
16; }
17; void f3() {
18;   f2();
19; }
20;
21; struct F4 {
22;   __attribute__((always_inline)) void f5();
23; };
24; void F4::f5() {
25;   f1();
26; }
27; void f6() {
28;   F4::f5();
29; }
30
31; Show that the only linkage names are for the inlined functions,
32; because those are the ones with an abstract origin.
33; ONENAME-NOT: {{DW_AT(_MIPS)?_linkage_name}}
34; ONENAME:     {{DW_AT(_MIPS)?_linkage_name}} {{.*}} "_Z2f2v"
35; ONENAME-NOT: {{DW_AT(_MIPS)?_linkage_name}}
36; ONENAME:     {{DW_AT(_MIPS)?_linkage_name}} {{.*}} "_ZN2F42f5Ev"
37; ONENAME-NOT: {{DW_AT(_MIPS)?_linkage_name}}
38
39; For f2() we see the definition pointing to an abstract origin DIE,
40; which in turn is where the linkage_name is; and then there's
41; an inlined_subroutine pointing back to the abstract origin.
42; The order of these DIEs is not important of course, just the links.
43; REF:      DW_TAG_subprogram
44; REF-NOT:  {{DW_TAG|NULL}}
45; REF:      DW_AT_abstract_origin {{.*}} {[[F2:0x.*]]} "_Z2f2v"
46; REF:      [[F2]]: DW_TAG_subprogram
47; REF-NEXT: linkage_name {{.*}} "_Z2f2v"
48; REF:      DW_TAG_inlined_subroutine
49; REF-NOT:  {{DW_TAG|NULL}}
50; REF:      DW_AT_abstract_origin {{.*}} {[[F2]]}
51
52; For F4::f5(), first we see the in-class declaration,
53; then the definition, abstract origin, and the inlined_subroutine.
54; REF:      DW_TAG_structure_type
55; REF-NEXT: DW_AT_name {{.*}} "F4"
56; REF-NOT:  {{DW_TAG|NULL}}
57; REF:      [[F5_DECL:0x.*]]: DW_TAG_subprogram
58; REF-NEXT: DW_AT_name {{.*}} "f5"
59; REF:      DW_TAG_subprogram
60; REF-NOT:  {{DW_TAG|NULL}}
61; REF:      DW_AT_abstract_origin {{.*}} {[[F5_ABS:0x.*]]} "_ZN2F42f5Ev"
62; REF:      [[F5_ABS]]: DW_TAG_subprogram
63; REF-NOT:  {{DW_TAG|NULL}}
64; REF:      linkage_name {{.*}} "_ZN2F42f5Ev"
65; REF-NEXT: DW_AT_specification {{.*}} {[[F5_DECL]]}
66; REF:      DW_TAG_inlined_subroutine
67; REF-NOT:  {{DW_TAG|NULL}}
68; REF:      DW_AT_abstract_origin {{.*}} {[[F5_ABS]]}
69
70
71; Function Attrs: alwaysinline uwtable
72define void @_Z2f2v() #0 !dbg !6 {
73entry:
74  call void @_Z2f1v(), !dbg !9
75  ret void, !dbg !10
76}
77
78declare void @_Z2f1v()
79
80; Function Attrs: uwtable
81define void @_Z2f3v() !dbg !11 {
82entry:
83  call void @_Z2f1v(), !dbg !12
84  ret void, !dbg !14
85}
86
87; Function Attrs: alwaysinline uwtable
88define void @_ZN2F42f5Ev() #0 align 2 !dbg !15 {
89entry:
90  call void @_Z2f1v(), !dbg !19
91  ret void, !dbg !20
92}
93
94; Function Attrs: uwtable
95define void @_Z2f6v() !dbg !21 {
96entry:
97  call void @_Z2f1v(), !dbg !22
98  ret void, !dbg !24
99}
100
101attributes #0 = { alwaysinline }
102
103!llvm.dbg.cu = !{!0}
104!llvm.module.flags = !{!3, !4}
105!llvm.ident = !{!5}
106
107!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 4.0.0 (trunk 288231)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
108!1 = !DIFile(filename: "linkage-name-abstract-static.cpp", directory: "/home/probinson/projects/scratch")
109!2 = !{}
110!3 = !{i32 2, !"Dwarf Version", i32 4}
111!4 = !{i32 2, !"Debug Info Version", i32 3}
112!5 = !{!"clang version 4.0.0 (trunk 288231)"}
113!6 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
114!7 = !DISubroutineType(types: !8)
115!8 = !{null}
116!9 = !DILocation(line: 3, column: 3, scope: !6)
117!10 = !DILocation(line: 4, column: 1, scope: !6)
118!11 = distinct !DISubprogram(name: "f3", linkageName: "_Z2f3v", scope: !1, file: !1, line: 5, type: !7, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
119!12 = !DILocation(line: 3, column: 3, scope: !6, inlinedAt: !13)
120!13 = distinct !DILocation(line: 6, column: 3, scope: !11)
121!14 = !DILocation(line: 7, column: 1, scope: !11)
122!15 = distinct !DISubprogram(name: "f5", linkageName: "_ZN2F42f5Ev", scope: !16, file: !1, line: 12, type: !7, isLocal: false, isDefinition: true, scopeLine: 12, flags: DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !18, retainedNodes: !2)
123!16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "F4", file: !1, line: 9, size: 8, elements: !17, identifier: "_ZTS2F4")
124!17 = !{!18}
125!18 = !DISubprogram(name: "f5", linkageName: "_ZN2F42f5Ev", scope: !16, file: !1, line: 10, type: !7, isLocal: false, isDefinition: false, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: false)
126!19 = !DILocation(line: 13, column: 3, scope: !15)
127!20 = !DILocation(line: 14, column: 1, scope: !15)
128!21 = distinct !DISubprogram(name: "f6", linkageName: "_Z2f6v", scope: !1, file: !1, line: 15, type: !7, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
129!22 = !DILocation(line: 13, column: 3, scope: !15, inlinedAt: !23)
130!23 = distinct !DILocation(line: 16, column: 3, scope: !21)
131!24 = !DILocation(line: 17, column: 1, scope: !21)
132