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 73 define void @_Z2f2v() #0 !dbg !6 { 74 entry: 75 call void @_Z2f1v(), !dbg !9 76 ret void, !dbg !10 77 } 78 79 declare void @_Z2f1v() 80 81 ; Function Attrs: uwtable 82 define void @_Z2f3v() !dbg !11 { 83 entry: 84 call void @_Z2f1v(), !dbg !12 85 ret void, !dbg !14 86 } 87 88 ; Function Attrs: alwaysinline uwtable 89 define void @_ZN2F42f5Ev() #0 align 2 !dbg !15 { 90 entry: 91 call void @_Z2f1v(), !dbg !19 92 ret void, !dbg !20 93 } 94 95 ; Function Attrs: uwtable 96 define void @_Z2f6v() !dbg !21 { 97 entry: 98 call void @_Z2f1v(), !dbg !22 99 ret void, !dbg !24 100 } 101 102 attributes #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
