1; Generated from the following source compiled with clang++ -gmlt: 2; void f1() {} 3; void __attribute__((section("__TEXT,__bar"))) f2() {} 4; void __attribute__((always_inline)) f3() { f1(); } 5; void f4() { f3(); } 6 7; Check that 8; * -gmlt includes no DW_TAG_subprograms for subprograms without inlined 9; subroutines. 10; * yet still produces DW_AT_ranges and a range list in debug_ranges that 11; describes those subprograms 12 13; CHECK: DW_TAG_compile_unit 14; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000 15; CHECK-NOT: {{DW_TAG|NULL}} 16 17; Omitting the subprograms without inlined subroutines is not possible 18; currently on Darwin as dsymutil will drop the whole CU if it has no subprograms 19; (which happens with this optimization if there are no inlined subroutines). 20 21; DARWIN: DW_TAG_subprogram 22; DARWIN-NOT: DW_TAG 23; DARWIN: DW_AT_name {{.*}} "f1" 24; DARWIN-NOT: {{DW_TAG|NULL}} 25; DARWIN: DW_TAG_subprogram 26; DARWIN-NOT: DW_TAG 27; DARWIN: DW_AT_name {{.*}} "f2" 28; DARWIN-NOT: {{DW_TAG|NULL}} 29; DARWIN: DW_TAG_subprogram 30; DARWIN-NOT: DW_TAG 31; Can't check the abstract_origin value across the DARWIN/CHECK checking and 32; ordering, so don't bother - just trust me, it refers to f3 down there. 33; DARWIN: DW_AT_abstract_origin 34; DARWIN-NOT: {{DW_TAG|NULL}} 35 36 37; FIXME: Emitting separate abstract definitions is inefficient when we could 38; just attach the DW_AT_name to the inlined_subroutine directly. Except that 39; would produce many string relocations. Implement string indexing in the 40; skeleton CU to address the relocation problem, then remove abstract 41; definitions from -gmlt here. 42 43; CHECK: DW_TAG_subprogram 44; CHECK-NEXT: DW_AT_name {{.*}}"f3" 45; CHECK-NEXT: DW_AT_inline 46 47; Check that we only provide the minimal attributes on a subprogram to save space. 48; CHECK: DW_TAG_subprogram 49; CHECK-NEXT: DW_AT_low_pc 50; CHECK-NEXT: DW_AT_high_pc 51; CHECK-NEXT: DW_AT_name 52; CHECK-NOT: {{DW_TAG|DW_AT}} 53; CHECK: DW_TAG_inlined_subroutine 54 55; As mentioned above - replace DW_AT_abstract_origin with DW_AT_name to save 56; space once we have support for string indexing in non-dwo sections 57 58; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f3" 59; CHECK-NEXT: DW_AT_low_pc 60; CHECK-NEXT: DW_AT_high_pc 61; CHECK-NEXT: DW_AT_call_file 62; CHECK-NEXT: DW_AT_call_line 63; CHECK-NEXT: DW_AT_call_column 64 65; Make sure we don't have any other subprograms here (subprograms with no 66; inlined subroutines are omitted by design to save space) 67 68; CHECK-NOT: {{DW_TAG|DW_AT}} 69; CHECK: NULL 70; CHECK-NOT: {{DW_TAG|DW_AT}} 71; CHECK: NULL 72 73; CHECK: .debug_ranges contents: 74 75; ... some addresses (depends on platform (such as platforms with function 76; reordering in the linker), and looks wonky on platforms with zero values 77; written in relocation places (dumper needs to be fixed to read the 78; relocations rather than interpret that as the end of a range list)) 79 80; CHECK: 00000000 <End of list> 81 82 83; Check that we don't emit any pubnames or pubtypes under -gmlt 84; CHECK-NOT: .debug_pubnames contents: 85; CHECK-NOT: .debug_pubtypes contents: 86 87; Function Attrs: nounwind uwtable 88define void @_Z2f1v() #0 !dbg !4 { 89entry: 90 ret void, !dbg !13 91} 92 93; Function Attrs: nounwind uwtable 94define void @_Z2f2v() #0 section "__TEXT,__bar" !dbg !7 { 95entry: 96 ret void, !dbg !14 97} 98 99; Function Attrs: alwaysinline nounwind uwtable 100define void @_Z2f3v() #1 !dbg !8 { 101entry: 102 call void @_Z2f1v(), !dbg !15 103 ret void, !dbg !16 104} 105 106; Function Attrs: nounwind uwtable 107define void @_Z2f4v() #0 !dbg !9 { 108entry: 109 call void @_Z2f1v() #2, !dbg !17 110 ret void, !dbg !19 111} 112 113attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 114attributes #1 = { alwaysinline nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 115attributes #2 = { nounwind } 116 117!llvm.dbg.cu = !{!0} 118!llvm.module.flags = !{!10, !11} 119!llvm.ident = !{!12} 120 121!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 122!1 = !DIFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo") 123!2 = !{} 124!4 = distinct !DISubprogram(name: "f1", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2) 125!5 = !DIFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo") 126!6 = !DISubroutineType(types: !2) 127!7 = distinct !DISubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2) 128!8 = distinct !DISubprogram(name: "f3", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, retainedNodes: !2) 129!9 = distinct !DISubprogram(name: "f4", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !1, scope: !5, type: !6, retainedNodes: !2) 130!10 = !{i32 2, !"Dwarf Version", i32 4} 131!11 = !{i32 2, !"Debug Info Version", i32 3} 132!12 = !{!"clang version 3.6.0 "} 133!13 = !DILocation(line: 1, column: 12, scope: !4) 134!14 = !DILocation(line: 2, column: 53, scope: !7) 135!15 = !DILocation(line: 3, column: 44, scope: !8) 136!16 = !DILocation(line: 3, column: 50, scope: !8) 137!17 = !DILocation(line: 3, column: 44, scope: !8, inlinedAt: !18) 138!18 = !DILocation(line: 4, column: 13, scope: !9) 139!19 = !DILocation(line: 4, column: 19, scope: !9) 140