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; REQUIRES: object-emission 9 10; Verify that the only linkage-name present is the abstract origin of the 11; inlined subprogram. 12 13; IR generated from clang -O0 with: 14; void f1(); 15; __attribute__((always_inline)) void f2() { 16; f1(); 17; } 18; void f3() { 19; f2(); 20; } 21; 22; struct F4 { 23; __attribute__((always_inline)) void f5(); 24; }; 25; void F4::f5() { 26; f1(); 27; } 28; void f6() { 29; F4::f5(); 30; } 31 32; Show that the only linkage names are for the inlined functions, 33; because those are the ones with an abstract origin. 34; ONENAME-NOT: {{DW_AT(_MIPS)?_linkage_name}} 35; ONENAME: {{DW_AT(_MIPS)?_linkage_name}} {{.*}} "_Z2f2v" 36; ONENAME-NOT: {{DW_AT(_MIPS)?_linkage_name}} 37; ONENAME: {{DW_AT(_MIPS)?_linkage_name}} {{.*}} "_ZN2F42f5Ev" 38; ONENAME-NOT: {{DW_AT(_MIPS)?_linkage_name}} 39 40; For f2() we see the definition pointing to an abstract origin DIE, 41; which in turn is where the linkage_name is; and then there's 42; an inlined_subroutine pointing back to the abstract origin. 43; The order of these DIEs is not important of course, just the links. 44; REF: DW_TAG_subprogram 45; REF-NOT: {{DW_TAG|NULL}} 46; REF: DW_AT_abstract_origin {{.*}} {[[F2:0x.*]]} "_Z2f2v" 47; REF: [[F2]]: DW_TAG_subprogram 48; REF-NEXT: linkage_name {{.*}} "_Z2f2v" 49; REF: DW_TAG_inlined_subroutine 50; REF-NOT: {{DW_TAG|NULL}} 51; REF: DW_AT_abstract_origin {{.*}} {[[F2]]} 52 53; For F4::f5(), first we see the in-class declaration, 54; then the definition, abstract origin, and the inlined_subroutine. 55; REF: DW_TAG_structure_type 56; REF-NEXT: DW_AT_name {{.*}} "F4" 57; REF-NOT: {{DW_TAG|NULL}} 58; REF: [[F5_DECL:0x.*]]: DW_TAG_subprogram 59; REF-NEXT: DW_AT_name {{.*}} "f5" 60; REF: DW_TAG_subprogram 61; REF-NOT: {{DW_TAG|NULL}} 62; REF: DW_AT_abstract_origin {{.*}} {[[F5_ABS:0x.*]]} "_ZN2F42f5Ev" 63; REF: [[F5_ABS]]: DW_TAG_subprogram 64; REF-NOT: {{DW_TAG|NULL}} 65; REF: linkage_name {{.*}} "_ZN2F42f5Ev" 66; REF-NEXT: DW_AT_specification {{.*}} {[[F5_DECL]]} 67; REF: DW_TAG_inlined_subroutine 68; REF-NOT: {{DW_TAG|NULL}} 69; REF: DW_AT_abstract_origin {{.*}} {[[F5_ABS]]} 70 71 72; Function Attrs: alwaysinline uwtable 73define void @_Z2f2v() #0 !dbg !6 { 74entry: 75 call void @_Z2f1v(), !dbg !9 76 ret void, !dbg !10 77} 78 79declare void @_Z2f1v() 80 81; Function Attrs: uwtable 82define void @_Z2f3v() !dbg !11 { 83entry: 84 call void @_Z2f1v(), !dbg !12 85 ret void, !dbg !14 86} 87 88; Function Attrs: alwaysinline uwtable 89define void @_ZN2F42f5Ev() #0 align 2 !dbg !15 { 90entry: 91 call void @_Z2f1v(), !dbg !19 92 ret void, !dbg !20 93} 94 95; Function Attrs: uwtable 96define void @_Z2f6v() !dbg !21 { 97entry: 98 call void @_Z2f1v(), !dbg !22 99 ret void, !dbg !24 100} 101 102attributes #0 = { alwaysinline } 103 104!llvm.dbg.cu = !{!0} 105!llvm.module.flags = !{!3, !4} 106!llvm.ident = !{!5} 107 108!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) 109!1 = !DIFile(filename: "linkage-name-abstract-static.cpp", directory: "/home/probinson/projects/scratch") 110!2 = !{} 111!3 = !{i32 2, !"Dwarf Version", i32 4} 112!4 = !{i32 2, !"Debug Info Version", i32 3} 113!5 = !{!"clang version 4.0.0 (trunk 288231)"} 114!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) 115!7 = !DISubroutineType(types: !8) 116!8 = !{null} 117!9 = !DILocation(line: 3, column: 3, scope: !6) 118!10 = !DILocation(line: 4, column: 1, scope: !6) 119!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) 120!12 = !DILocation(line: 3, column: 3, scope: !6, inlinedAt: !13) 121!13 = distinct !DILocation(line: 6, column: 3, scope: !11) 122!14 = !DILocation(line: 7, column: 1, scope: !11) 123!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) 124!16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "F4", file: !1, line: 9, size: 8, elements: !17, identifier: "_ZTS2F4") 125!17 = !{!18} 126!18 = !DISubprogram(name: "f5", linkageName: "_ZN2F42f5Ev", scope: !16, file: !1, line: 10, type: !7, isLocal: false, isDefinition: false, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: false) 127!19 = !DILocation(line: 13, column: 3, scope: !15) 128!20 = !DILocation(line: 14, column: 1, scope: !15) 129!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) 130!22 = !DILocation(line: 13, column: 3, scope: !15, inlinedAt: !23) 131!23 = distinct !DILocation(line: 16, column: 3, scope: !21) 132!24 = !DILocation(line: 17, column: 1, scope: !21) 133