Index: include/llvm/MC/MCObjectFileInfo.h =================================================================== --- include/llvm/MC/MCObjectFileInfo.h +++ include/llvm/MC/MCObjectFileInfo.h @@ -117,6 +117,8 @@ MCSection *DwarfAddrSection; /// The DWARF v5 range list section. MCSection *DwarfRnglistsSection; + /// The DWARF v5 locations list section. + MCSection *DwarfLoclistsSection; /// The DWARF v5 range list section for fission. MCSection *DwarfRnglistsDWOSection; @@ -258,6 +260,7 @@ MCSection *getDwarfARangesSection() const { return DwarfARangesSection; } MCSection *getDwarfRangesSection() const { return DwarfRangesSection; } MCSection *getDwarfRnglistsSection() const { return DwarfRnglistsSection; } + MCSection *getDwarfLoclistsSection() const { return DwarfLoclistsSection; } MCSection *getDwarfMacinfoSection() const { return DwarfMacinfoSection; } MCSection *getDwarfDebugNamesSection() const { Index: lib/CodeGen/AsmPrinter/DwarfDebug.cpp =================================================================== --- lib/CodeGen/AsmPrinter/DwarfDebug.cpp +++ lib/CodeGen/AsmPrinter/DwarfDebug.cpp @@ -727,11 +727,16 @@ (useSplitDwarf() ? SkeletonHolder : InfoHolder) .setStringOffsetsStartSym(Asm->createTempSymbol("str_offsets_base")); - // Create the symbol that designates the start of the DWARF v5 range list - // table. It is located past the header and before the offsets table. + + // Create the symbols that designates the start of the DWARF v5 range list + // and locations list tables. They are located past the table headers. if (getDwarfVersion() >= 5) { - (useSplitDwarf() ? SkeletonHolder : InfoHolder) - .setRnglistsTableBaseSym(Asm->createTempSymbol("rnglists_table_base")); + DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder; + Holder.setRnglistsTableBaseSym( + Asm->createTempSymbol("rnglists_table_base")); + Holder.setLoclistsTableBaseSym( + Asm->createTempSymbol("loclists_table_base")); + if (useSplitDwarf()) InfoHolder.setRnglistsTableBaseSym( Asm->createTempSymbol("rnglists_dwo_table_base")); @@ -889,8 +894,13 @@ U.attachRangesOrLowHighPC(U.getUnitDie(), TheCU.takeRanges()); } - if (getDwarfVersion() >= 5 && U.hasRangeLists()) - U.addRnglistsBase(); + if (getDwarfVersion() >= 5) { + if (U.hasRangeLists()) + U.addRnglistsBase(); + + if (!DebugLocs.getLists().empty() && !useSplitDwarf()) + U.addLoclistsBase(); + } auto *CUNode = cast(P.first); // If compile Unit has macros, emit "DW_AT_macro_info" attribute. @@ -1925,25 +1935,119 @@ emitDebugLocEntry(Streamer, Entry); } -// Emit locations into the debug loc section. +// Emit the common part of the DWARF 5 range/locations list tables header. +static void emitListsTableHeaderStart(AsmPrinter *Asm, const DwarfFile &Holder, + MCSymbol *TableStart, + MCSymbol *TableEnd) { + // Build the table header, which starts with the length field. + Asm->OutStreamer->AddComment("Length"); + Asm->EmitLabelDifference(TableEnd, TableStart, 4); + Asm->OutStreamer->EmitLabel(TableStart); + // Version number (DWARF v5 and later). + Asm->OutStreamer->AddComment("Version"); + Asm->emitInt16(Asm->OutStreamer->getContext().getDwarfVersion()); + // Address size. + Asm->OutStreamer->AddComment("Address size"); + Asm->emitInt8(Asm->MAI->getCodePointerSize()); + // Segment selector size. + Asm->OutStreamer->AddComment("Segment selector size"); + Asm->emitInt8(0); +} + +// Emit the header of a DWARF 5 range list table list table. Returns the symbol +// that designates the end of the table for the caller to emit when the table is +// complete. +static MCSymbol *emitRnglistsTableHeader(AsmPrinter *Asm, + const DwarfFile &Holder) { + MCSymbol *TableStart = Asm->createTempSymbol("debug_rnglist_table_start"); + MCSymbol *TableEnd = Asm->createTempSymbol("debug_rnglist_table_end"); + emitListsTableHeaderStart(Asm, Holder, TableStart, TableEnd); + + Asm->OutStreamer->AddComment("Offset entry count"); + Asm->emitInt32(Holder.getRangeLists().size()); + Asm->OutStreamer->EmitLabel(Holder.getRnglistsTableBaseSym()); + + for (const RangeSpanList &List : Holder.getRangeLists()) + Asm->EmitLabelDifference(List.getSym(), Holder.getRnglistsTableBaseSym(), + 4); + + return TableEnd; +} + +// Emit the header of a DWARF 5 locations list table. Returns the symbol that +// designates the end of the table for the caller to emit when the table is +// complete. +static MCSymbol *emitLoclistsTableHeader(AsmPrinter *Asm, + const DwarfFile &Holder) { + MCSymbol *TableStart = Asm->createTempSymbol("debug_loclist_table_start"); + MCSymbol *TableEnd = Asm->createTempSymbol("debug_loclist_table_end"); + emitListsTableHeaderStart(Asm, Holder, TableStart, TableEnd); + + // FIXME: Generate the offsets table and use DW_FORM_loclistx with the + // DW_AT_loclists_base attribute. Until then set the number of offsets to 0. + Asm->OutStreamer->AddComment("Offset entry count"); + Asm->emitInt32(0); + Asm->OutStreamer->EmitLabel(Holder.getLoclistsTableBaseSym()); + + return TableEnd; +} + +// Emit locations into the .debug_loc/.debug_rnglists section. void DwarfDebug::emitDebugLoc() { if (DebugLocs.getLists().empty()) return; - // Start the dwarf loc section. - Asm->OutStreamer->SwitchSection( - Asm->getObjFileLowering().getDwarfLocSection()); + bool IsLocLists = getDwarfVersion() >= 5; + MCSymbol *TableEnd = nullptr; + if (IsLocLists) { + Asm->OutStreamer->SwitchSection( + Asm->getObjFileLowering().getDwarfLoclistsSection()); + TableEnd = emitLoclistsTableHeader(Asm, useSplitDwarf() ? SkeletonHolder + : InfoHolder); + } else { + Asm->OutStreamer->SwitchSection( + Asm->getObjFileLowering().getDwarfLocSection()); + } + unsigned char Size = Asm->MAI->getCodePointerSize(); for (const auto &List : DebugLocs.getLists()) { Asm->OutStreamer->EmitLabel(List.Label); + const DwarfCompileUnit *CU = List.CU; + const MCSymbol *Base = CU->getBaseAddress(); for (const auto &Entry : DebugLocs.getEntries(List)) { - // Set up the range. This range is relative to the entry point of the - // compile unit. This is a hard coded 0 for low_pc when we're emitting - // ranges, or the DW_AT_low_pc on the compile unit otherwise. - if (auto *Base = CU->getBaseAddress()) { - Asm->EmitLabelDifference(Entry.BeginSym, Base, Size); - Asm->EmitLabelDifference(Entry.EndSym, Base, Size); + if (Base) { + // Set up the range. This range is relative to the entry point of the + // compile unit. This is a hard coded 0 for low_pc when we're emitting + // ranges, or the DW_AT_low_pc on the compile unit otherwise. + if (IsLocLists) { + Asm->OutStreamer->AddComment("DW_LLE_offset_pair"); + Asm->OutStreamer->EmitIntValue(dwarf::DW_LLE_offset_pair, 1); + Asm->OutStreamer->AddComment(" starting offset"); + Asm->EmitLabelDifferenceAsULEB128(Entry.BeginSym, Base); + Asm->OutStreamer->AddComment(" ending offset"); + Asm->EmitLabelDifferenceAsULEB128(Entry.EndSym, Base); + } else { + Asm->EmitLabelDifference(Entry.BeginSym, Base, Size); + Asm->EmitLabelDifference(Entry.EndSym, Base, Size); + } + + emitDebugLocEntryLocation(Entry); + continue; + } + + // We have no base address. + if (IsLocLists) { + // TODO: Use DW_LLE_base_addressx + DW_LLE_offset_pair, or + // DW_LLE_startx_length in case if there is only a single range. + // That should reduce the size of the debug data emited. + // For now just use the DW_LLE_startx_length for all cases. + Asm->OutStreamer->AddComment("DW_LLE_startx_length"); + Asm->emitInt8(dwarf::DW_LLE_startx_length); + Asm->OutStreamer->AddComment(" start idx"); + Asm->EmitULEB128(AddrPool.getIndex(Entry.BeginSym)); + Asm->OutStreamer->AddComment(" length"); + Asm->EmitLabelDifferenceAsULEB128(Entry.EndSym, Entry.BeginSym); } else { Asm->OutStreamer->EmitSymbolValue(Entry.BeginSym, Size); Asm->OutStreamer->EmitSymbolValue(Entry.EndSym, Size); @@ -1951,9 +2055,20 @@ emitDebugLocEntryLocation(Entry); } - Asm->OutStreamer->EmitIntValue(0, Size); - Asm->OutStreamer->EmitIntValue(0, Size); + + if (IsLocLists) { + // .debug_loclists section ends with DW_LLE_end_of_list. + Asm->OutStreamer->AddComment("DW_LLE_end_of_list"); + Asm->OutStreamer->EmitIntValue(dwarf::DW_LLE_end_of_list, 1); + } else { + // Terminate the .debug_loc list with two 0 values. + Asm->OutStreamer->EmitIntValue(0, Size); + Asm->OutStreamer->EmitIntValue(0, Size); + } } + + if (TableEnd) + Asm->OutStreamer->EmitLabel(TableEnd); } void DwarfDebug::emitDebugLocDWO() { @@ -2228,39 +2343,6 @@ } } -// Emit the header of a DWARF 5 range list table. Returns the symbol that -// designates the end of the table for the caller to emit when the table is -// complete. -static MCSymbol *emitRnglistsTableHeader(AsmPrinter *Asm, - const DwarfFile &Holder) { - // The length is described by a starting label right after the length field - // and an end label. - MCSymbol *TableStart = Asm->createTempSymbol("debug_rnglist_table_start"); - MCSymbol *TableEnd = Asm->createTempSymbol("debug_rnglist_table_end"); - // Build the range table header, which starts with the length field. - Asm->OutStreamer->AddComment("Length"); - Asm->EmitLabelDifference(TableEnd, TableStart, 4); - Asm->OutStreamer->EmitLabel(TableStart); - // Version number (DWARF v5 and later). - Asm->OutStreamer->AddComment("Version"); - Asm->emitInt16(Asm->OutStreamer->getContext().getDwarfVersion()); - Asm->OutStreamer->AddComment("Address size"); - Asm->emitInt8(Asm->MAI->getCodePointerSize()); - Asm->OutStreamer->AddComment("Segment selector size"); - Asm->emitInt8(0); - - MCSymbol *RnglistsTableBaseSym = Holder.getRnglistsTableBaseSym(); - - // FIXME: Generate the offsets table and use DW_FORM_rnglistx with the - // DW_AT_ranges attribute. Until then set the number of offsets to 0. - Asm->OutStreamer->AddComment("Offset entry count"); - Asm->emitInt32(Holder.getRangeLists().size()); - Asm->OutStreamer->EmitLabel(RnglistsTableBaseSym); - for (const RangeSpanList &List : Holder.getRangeLists()) - Asm->EmitLabelDifference(List.getSym(), RnglistsTableBaseSym, 4); - return TableEnd; -} - void emitDebugRangesImpl(DwarfDebug &DD, AsmPrinter *Asm, const DwarfFile &Holder, MCSymbol *TableEnd) { for (const RangeSpanList &List : Holder.getRangeLists()) Index: lib/CodeGen/AsmPrinter/DwarfFile.h =================================================================== --- lib/CodeGen/AsmPrinter/DwarfFile.h +++ lib/CodeGen/AsmPrinter/DwarfFile.h @@ -89,6 +89,10 @@ /// The table is shared by all units. MCSymbol *RnglistsTableBaseSym = nullptr; + /// DWARF v5: The symbol that designates the base of the locations list table. + /// The table is shared by all units. + MCSymbol *LoclistsTableBaseSym = nullptr; + /// The variables of a lexical scope. struct ScopeVars { /// We need to sort Args by ArgNo and check for duplicates. This could also @@ -161,13 +165,14 @@ DwarfStringPool &getStringPool() { return StrPool; } MCSymbol *getStringOffsetsStartSym() const { return StringOffsetsStartSym; } - void setStringOffsetsStartSym(MCSymbol *Sym) { StringOffsetsStartSym = Sym; } MCSymbol *getRnglistsTableBaseSym() const { return RnglistsTableBaseSym; } - void setRnglistsTableBaseSym(MCSymbol *Sym) { RnglistsTableBaseSym = Sym; } + MCSymbol *getLoclistsTableBaseSym() const { return LoclistsTableBaseSym; } + void setLoclistsTableBaseSym(MCSymbol *Sym) { LoclistsTableBaseSym = Sym; } + /// \returns false if the variable was merged with a previous one. bool addScopeVariable(LexicalScope *LS, DbgVariable *Var); Index: lib/CodeGen/AsmPrinter/DwarfUnit.h =================================================================== --- lib/CodeGen/AsmPrinter/DwarfUnit.h +++ lib/CodeGen/AsmPrinter/DwarfUnit.h @@ -272,6 +272,9 @@ /// Add the DW_AT_rnglists_base attribute to the unit DIE. void addRnglistsBase(); + /// Add the DW_AT_loclists_base attribute to the unit DIE. + void addLoclistsBase(); + /// Add the DW_AT_addr_base attribute to the unit DIE. void addAddrTableBase(); Index: lib/CodeGen/AsmPrinter/DwarfUnit.cpp =================================================================== --- lib/CodeGen/AsmPrinter/DwarfUnit.cpp +++ lib/CodeGen/AsmPrinter/DwarfUnit.cpp @@ -1656,6 +1656,15 @@ TLOF.getDwarfRnglistsSection()->getBeginSymbol()); } +void DwarfUnit::addLoclistsBase() { + assert(DD->getDwarfVersion() >= 5 && + "DW_AT_loclists_base requires DWARF version 5 or later"); + const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering(); + addSectionLabel(getUnitDie(), dwarf::DW_AT_loclists_base, + DU->getLoclistsTableBaseSym(), + TLOF.getDwarfLoclistsSection()->getBeginSymbol()); +} + void DwarfUnit::addAddrTableBase() { const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering(); MCSymbol *Label = DD->getAddressPool().getLabel(); Index: lib/MC/MCObjectFileInfo.cpp =================================================================== --- lib/MC/MCObjectFileInfo.cpp +++ lib/MC/MCObjectFileInfo.cpp @@ -260,6 +260,10 @@ DwarfLocSection = Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG, SectionKind::getMetadata(), "section_debug_loc"); + DwarfLoclistsSection = + Ctx->getMachOSection("__DWARF", "__debug_loclists", MachO::S_ATTR_DEBUG, + SectionKind::getMetadata(), "section_debug_loc"); + DwarfARangesSection = Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG, SectionKind::getMetadata()); @@ -435,6 +439,7 @@ Ctx->getELFSection(".debug_str_offsets", DebugSecType, 0); DwarfAddrSection = Ctx->getELFSection(".debug_addr", DebugSecType, 0); DwarfRnglistsSection = Ctx->getELFSection(".debug_rnglists", DebugSecType, 0); + DwarfLoclistsSection = Ctx->getELFSection(".debug_loclists", DebugSecType, 0); // Fission Sections DwarfInfoDWOSection = Index: test/CodeGen/X86/debug-loclists.ll =================================================================== --- test/CodeGen/X86/debug-loclists.ll +++ test/CodeGen/X86/debug-loclists.ll @@ -0,0 +1,142 @@ +; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj -o %t < %s +; RUN: llvm-dwarfdump -v %t | FileCheck %s + +; CHECK: 0x00000033: DW_TAG_formal_parameter [3] +; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (0x0000000c +; CHECK-NEXT: [0x0000000000000000, 0x0000000000000004): DW_OP_breg5 RDI+0 +; CHECK-NEXT: [0x0000000000000004, 0x0000000000000012): DW_OP_breg3 RBX+0) +; CHECK-NEXT: DW_AT_name [DW_FORM_strx1] ( indexed (0000000e) string = "a") +; CHECK-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/home/folder\test.cc") +; CHECK-NEXT: DW_AT_decl_line [DW_FORM_data1] (6) +; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0040 => {0x00000040} "A") + +; CHECK: .debug_loclists contents: +; CHECK-NEXT: 0x00000000: locations list header: length = 0x00000017, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000 +; CHECK-NEXT: 0x00000000: +; CHECK-NEXT: [0x0000000000000000, 0x0000000000000004): DW_OP_breg5 RDI+0 +; CHECK-NEXT: [0x0000000000000004, 0x0000000000000012): DW_OP_breg3 RBX+0 + +; There is no way to use llvm-dwarfdump atm (2018, october) to verify the DW_LLE_* codes emited, +; because dumper is not yet implements that. Use asm code to do this check instead. +; +; RUN: llc -mtriple=x86_64-pc-linux -filetype=asm < %s -o - | FileCheck %s --check-prefix=ASM +; ASM: .section .debug_loclists,"",@progbits +; ASM-NEXT: .long .Ldebug_loclist_table_end0-.Ldebug_loclist_table_start0 # Length +; ASM-NEXT: .Ldebug_loclist_table_start0: +; ASM-NEXT: .short 5 # Version +; ASM-NEXT: .byte 8 # Address size +; ASM-NEXT: .byte 0 # Segment selector size +; ASM-NEXT: .long 0 # Offset entry count +; ASM-NEXT: .Lloclists_table_base0: +; ASM-NEXT: .Ldebug_loc0: +; ASM-NEXT: .byte 4 # DW_LLE_offset_pair +; ASM-NEXT: .uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset +; ASM-NEXT: .uleb128 .Ltmp0-.Lfunc_begin0 # ending offset +; ASM-NEXT: .short 2 # Loc expr size +; ASM-NEXT: .byte 117 # DW_OP_breg5 +; ASM-NEXT: .byte 0 # 0 +; ASM-NEXT: .byte 4 # DW_LLE_offset_pair +; ASM-NEXT: .uleb128 .Ltmp0-.Lfunc_begin0 # starting offset +; ASM-NEXT: .uleb128 .Ltmp1-.Lfunc_begin0 # ending offset +; ASM-NEXT: .short 2 # Loc expr size +; ASM-NEXT: .byte 115 # DW_OP_breg3 +; ASM-NEXT: .byte 0 # 0 +; ASM-NEXT: .byte 0 # DW_LLE_end_of_list +; ASM-NEXT: .Ldebug_loclist_table_end0: + +; ModuleID = 'test.cc' +source_filename = "test.cc" +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +%struct.A = type { i32 (...)** } + +@_ZTV1A = dso_local unnamed_addr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI1A to i8*), i8* bitcast (void (%struct.A*)* @_ZN1A3fooEv to i8*), i8* bitcast (void (%struct.A*)* @_ZN1A3barEv to i8*)] }, align 8 +@_ZTVN10__cxxabiv117__class_type_infoE = external dso_local global i8* +@_ZTS1A = dso_local constant [3 x i8] c"1A\00", align 1 +@_ZTI1A = dso_local constant { i8*, i8* } { i8* bitcast (i8** getelementptr inbounds (i8*, i8** @_ZTVN10__cxxabiv117__class_type_infoE, i64 2) to i8*), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1A, i32 0, i32 0) }, align 8 + +; Function Attrs: noinline optnone uwtable +define dso_local void @_Z3baz1A(%struct.A* %a) #0 !dbg !7 { +entry: + call void @llvm.dbg.declare(metadata %struct.A* %a, metadata !23, metadata !DIExpression()), !dbg !24 + call void @_ZN1A3fooEv(%struct.A* %a), !dbg !25 + call void @_ZN1A3barEv(%struct.A* %a), !dbg !26 + ret void, !dbg !27 +} + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 + +; Function Attrs: noinline nounwind optnone uwtable +define dso_local void @_ZN1A3fooEv(%struct.A* %this) unnamed_addr #2 align 2 !dbg !28 { +entry: + %this.addr = alloca %struct.A*, align 8 + store %struct.A* %this, %struct.A** %this.addr, align 8 + call void @llvm.dbg.declare(metadata %struct.A** %this.addr, metadata !29, metadata !DIExpression()), !dbg !31 + %this1 = load %struct.A*, %struct.A** %this.addr, align 8 + ret void, !dbg !32 +} + +; Function Attrs: noinline nounwind optnone uwtable +define dso_local void @_ZN1A3barEv(%struct.A* %this) unnamed_addr #2 align 2 !dbg !33 { +entry: + %this.addr = alloca %struct.A*, align 8 + store %struct.A* %this, %struct.A** %this.addr, align 8 + call void @llvm.dbg.declare(metadata %struct.A** %this.addr, metadata !34, metadata !DIExpression()), !dbg !35 + %this1 = load %struct.A*, %struct.A** %this.addr, align 8 + ret void, !dbg !36 +} + +; Function Attrs: noinline norecurse nounwind optnone uwtable +define dso_local i32 @main() #3 !dbg !37 { +entry: + %retval = alloca i32, align 4 + store i32 0, i32* %retval, align 4 + ret i32 0, !dbg !38 +} + + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3, !4, !5} +!llvm.ident = !{!6} + +!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 (trunk 344035)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) +!1 = !DIFile(filename: "test.cc", directory: "/home/folder", checksumkind: CSK_MD5, checksum: "e0f357ad6dcb791a774a0dae55baf5e7") +!2 = !{} +!3 = !{i32 2, !"Dwarf Version", i32 5} +!4 = !{i32 2, !"Debug Info Version", i32 3} +!5 = !{i32 1, !"wchar_size", i32 4} +!6 = !{!"clang version 8.0.0 (trunk 344035)"} +!7 = distinct !DISubprogram(name: "baz", linkageName: "_Z3baz1A", scope: !1, file: !1, line: 6, type: !8, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) +!8 = !DISubroutineType(types: !9) +!9 = !{null, !10} +!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 1, size: 64, flags: DIFlagTypePassByReference, elements: !11, vtableHolder: !10, identifier: "_ZTS1A") +!11 = !{!12, !18, !22} +!12 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$A", scope: !1, file: !1, baseType: !13, size: 64, flags: DIFlagArtificial) +!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) +!14 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: !15, size: 64) +!15 = !DISubroutineType(types: !16) +!16 = !{!17} +!17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!18 = !DISubprogram(name: "foo", linkageName: "_ZN1A3fooEv", scope: !10, file: !1, line: 2, type: !19, isLocal: false, isDefinition: false, scopeLine: 2, containingType: !10, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped, isOptimized: false) +!19 = !DISubroutineType(types: !20) +!20 = !{null, !21} +!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) +!22 = !DISubprogram(name: "bar", linkageName: "_ZN1A3barEv", scope: !10, file: !1, line: 3, type: !19, isLocal: false, isDefinition: false, scopeLine: 3, containingType: !10, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 1, flags: DIFlagPrototyped, isOptimized: false) +!23 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 6, type: !10) +!24 = !DILocation(line: 6, column: 19, scope: !7) +!25 = !DILocation(line: 7, column: 6, scope: !7) +!26 = !DILocation(line: 8, column: 6, scope: !7) +!27 = !DILocation(line: 9, column: 1, scope: !7) +!28 = distinct !DISubprogram(name: "foo", linkageName: "_ZN1A3fooEv", scope: !10, file: !1, line: 12, type: !19, isLocal: false, isDefinition: true, scopeLine: 12, flags: DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !18, retainedNodes: !2) +!29 = !DILocalVariable(name: "this", arg: 1, scope: !28, type: !30, flags: DIFlagArtificial | DIFlagObjectPointer) +!30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64) +!31 = !DILocation(line: 0, scope: !28) +!32 = !DILocation(line: 12, column: 16, scope: !28) +!33 = distinct !DISubprogram(name: "bar", linkageName: "_ZN1A3barEv", scope: !10, file: !1, line: 13, type: !19, isLocal: false, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !22, retainedNodes: !2) +!34 = !DILocalVariable(name: "this", arg: 1, scope: !33, type: !30, flags: DIFlagArtificial | DIFlagObjectPointer) +!35 = !DILocation(line: 0, scope: !33) +!36 = !DILocation(line: 13, column: 16, scope: !33) +!37 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 15, type: !15, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) +!38 = !DILocation(line: 16, column: 3, scope: !37)