diff --git a/lldb/include/lldb/Symbol/CompileUnit.h b/lldb/include/lldb/Symbol/CompileUnit.h --- a/lldb/include/lldb/Symbol/CompileUnit.h +++ b/lldb/include/lldb/Symbol/CompileUnit.h @@ -442,6 +442,7 @@ CompileUnit(const CompileUnit &) = delete; const CompileUnit &operator=(const CompileUnit &) = delete; + const char *GetCachedLanguage() const; }; } // namespace lldb_private diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h --- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h +++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h @@ -92,6 +92,7 @@ uint64_t GetDWOId(); void ExtractUnitDIEIfNeeded(); + void ExtractUnitDIENoDwoIfNeeded(); void ExtractDIEsIfNeeded(); class ScopedExtractDIEs { @@ -151,7 +152,7 @@ const DWARFAbbreviationDeclarationSet *GetAbbreviations() const; dw_offset_t GetAbbrevOffset() const; uint8_t GetAddressByteSize() const { return m_header.GetAddressByteSize(); } - dw_addr_t GetAddrBase() const { return m_addr_base; } + dw_addr_t GetAddrBase() const { return m_addr_base ? *m_addr_base : 0; } dw_addr_t GetBaseAddress() const { return m_base_addr; } dw_offset_t GetLineTableOffset(); dw_addr_t GetRangesBase() const { return m_ranges_base; } @@ -268,7 +269,7 @@ // Get the DWARF unit DWARF debug information entry. Parse the single DIE // if needed. const DWARFDebugInfoEntry *GetUnitDIEPtrOnly() { - ExtractUnitDIEIfNeeded(); + ExtractUnitDIENoDwoIfNeeded(); // m_first_die_mutex is not required as m_first_die is never cleared. if (!m_first_die) return NULL; @@ -315,9 +316,11 @@ lldb_private::LazyBool m_is_optimized = lldb_private::eLazyBoolCalculate; llvm::Optional m_comp_dir; llvm::Optional m_file_spec; - dw_addr_t m_addr_base = 0; ///< Value of DW_AT_addr_base. - dw_addr_t m_loclists_base = 0; ///< Value of DW_AT_loclists_base. - dw_addr_t m_ranges_base = 0; ///< Value of DW_AT_rnglists_base. + llvm::Optional m_addr_base; ///< Value of DW_AT_addr_base. + dw_addr_t m_loclists_base = 0; ///< Value of DW_AT_loclists_base. + dw_addr_t m_ranges_base = 0; ///< Value of DW_AT_rnglists_base. + llvm::Optional m_gnu_addr_base; + llvm::Optional m_gnu_ranges_base; /// Value of DW_AT_stmt_list. dw_offset_t m_line_table_offset = DW_INVALID_OFFSET; @@ -330,6 +333,7 @@ const DIERef::Section m_section; bool m_is_dwo; + bool m_has_parsed_non_skeleton_unit; /// Value of DW_AT_GNU_dwo_id (v4) or dwo_id from CU header (v5). uint64_t m_dwo_id; diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp --- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp +++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp @@ -35,12 +35,12 @@ DIERef::Section section, bool is_dwo) : UserID(uid), m_dwarf(dwarf), m_header(header), m_abbrevs(&abbrevs), m_cancel_scopes(false), m_section(section), m_is_dwo(is_dwo), - m_dwo_id(header.GetDWOId()) {} + m_has_parsed_non_skeleton_unit(false), m_dwo_id(header.GetDWOId()) {} DWARFUnit::~DWARFUnit() = default; -// Parses first DIE of a compile unit. -void DWARFUnit::ExtractUnitDIEIfNeeded() { +// Parses first DIE of a compile unit, excluding DWO. +void DWARFUnit::ExtractUnitDIENoDwoIfNeeded() { { llvm::sys::ScopedReader lock(m_first_die_mutex); if (m_first_die) @@ -50,7 +50,8 @@ if (m_first_die) return; // Already parsed - LLDB_SCOPED_TIMERF("%8.8x: DWARFUnit::ExtractUnitDIEIfNeeded()", GetOffset()); + LLDB_SCOPED_TIMERF("%8.8x: DWARFUnit::ExtractUnitDIENoDwoIfNeeded()", + GetOffset()); // Set the offset to that of the first DIE and calculate the start of the // next compilation unit header. @@ -66,6 +67,58 @@ } } +// Parses first DIE of a compile unit including DWO. +void DWARFUnit::ExtractUnitDIEIfNeeded() { + ExtractUnitDIENoDwoIfNeeded(); + + if (m_has_parsed_non_skeleton_unit) + return; + + m_has_parsed_non_skeleton_unit = true; + + std::shared_ptr dwo_symbol_file = + m_dwarf.GetDwoSymbolFileForCompileUnit(*this, m_first_die); + if (!dwo_symbol_file) + return; + + DWARFUnit *dwo_cu = dwo_symbol_file->GetDWOCompileUnitForHash(m_dwo_id); + + if (!dwo_cu) + return; // Can't fetch the compile unit from the dwo file. + dwo_cu->SetUserData(this); + + DWARFBaseDIE dwo_cu_die = dwo_cu->GetUnitDIEOnly(); + if (!dwo_cu_die.IsValid()) + return; // Can't fetch the compile unit DIE from the dwo file. + + // Here for DWO CU we want to use the address base set in the skeleton unit + // (DW_AT_addr_base) if it is available and use the DW_AT_GNU_addr_base + // otherwise. We do that because pre-DWARF v5 could use the DW_AT_GNU_* + // attributes which were applicable to the DWO units. The corresponding + // DW_AT_* attributes standardized in DWARF v5 are also applicable to the + // main unit in contrast. + if (m_addr_base) + dwo_cu->SetAddrBase(*m_addr_base); + else if (m_gnu_addr_base) + dwo_cu->SetAddrBase(*m_gnu_addr_base); + + if (GetVersion() <= 4 && m_gnu_ranges_base) + dwo_cu->SetRangesBase(*m_gnu_ranges_base); + else if (dwo_symbol_file->GetDWARFContext() + .getOrLoadRngListsData() + .GetByteSize() > 0) + dwo_cu->SetRangesBase(llvm::DWARFListTableHeader::getHeaderSize(DWARF32)); + + if (GetVersion() >= 5 && + dwo_symbol_file->GetDWARFContext().getOrLoadLocListsData().GetByteSize() > + 0) + dwo_cu->SetLoclistsBase(llvm::DWARFListTableHeader::getHeaderSize(DWARF32)); + + dwo_cu->SetBaseAddress(GetBaseAddress()); + + m_dwo = std::shared_ptr(std::move(dwo_symbol_file), dwo_cu); +} + // Parses a compile unit and indexes its DIEs if it hasn't already been done. // It will leave this compile unit extracted forever. void DWARFUnit::ExtractDIEsIfNeeded() { @@ -291,14 +344,12 @@ } uint64_t DWARFUnit::GetDWOId() { - ExtractUnitDIEIfNeeded(); + ExtractUnitDIENoDwoIfNeeded(); return m_dwo_id; } // m_die_array_mutex must be already held as read/write. void DWARFUnit::AddUnitDIE(const DWARFDebugInfoEntry &cu_die) { - llvm::Optional addr_base, gnu_addr_base, gnu_ranges_base; - DWARFAttributes attributes; size_t num_attributes = cu_die.GetAttributes(this, attributes); @@ -308,8 +359,7 @@ continue; DWARFFormValue form_value; if (attributes.ExtractFormValueAtIndex(i, form_value)) { - addr_base = form_value.Unsigned(); - SetAddrBase(*addr_base); + SetAddrBase(form_value.Unsigned()); break; } } @@ -341,10 +391,10 @@ m_line_table_offset = form_value.Unsigned(); break; case DW_AT_GNU_addr_base: - gnu_addr_base = form_value.Unsigned(); + m_gnu_addr_base = form_value.Unsigned(); break; case DW_AT_GNU_ranges_base: - gnu_ranges_base = form_value.Unsigned(); + m_gnu_ranges_base = form_value.Unsigned(); break; case DW_AT_GNU_dwo_id: m_dwo_id = form_value.Unsigned(); @@ -353,50 +403,10 @@ } if (m_is_dwo) { + m_has_parsed_non_skeleton_unit = true; SetDwoStrOffsetsBase(); return; } - - std::shared_ptr dwo_symbol_file = - m_dwarf.GetDwoSymbolFileForCompileUnit(*this, cu_die); - if (!dwo_symbol_file) - return; - - DWARFUnit *dwo_cu = dwo_symbol_file->GetDWOCompileUnitForHash(m_dwo_id); - - if (!dwo_cu) - return; // Can't fetch the compile unit from the dwo file. - dwo_cu->SetUserData(this); - - DWARFBaseDIE dwo_cu_die = dwo_cu->GetUnitDIEOnly(); - if (!dwo_cu_die.IsValid()) - return; // Can't fetch the compile unit DIE from the dwo file. - - // Here for DWO CU we want to use the address base set in the skeleton unit - // (DW_AT_addr_base) if it is available and use the DW_AT_GNU_addr_base - // otherwise. We do that because pre-DWARF v5 could use the DW_AT_GNU_* - // attributes which were applicable to the DWO units. The corresponding - // DW_AT_* attributes standardized in DWARF v5 are also applicable to the main - // unit in contrast. - if (addr_base) - dwo_cu->SetAddrBase(*addr_base); - else if (gnu_addr_base) - dwo_cu->SetAddrBase(*gnu_addr_base); - - if (GetVersion() <= 4 && gnu_ranges_base) - dwo_cu->SetRangesBase(*gnu_ranges_base); - else if (dwo_symbol_file->GetDWARFContext() - .getOrLoadRngListsData() - .GetByteSize() > 0) - dwo_cu->SetRangesBase(llvm::DWARFListTableHeader::getHeaderSize(DWARF32)); - - if (GetVersion() >= 5 && - dwo_symbol_file->GetDWARFContext().getOrLoadLocListsData().GetByteSize() > - 0) - dwo_cu->SetLoclistsBase(llvm::DWARFListTableHeader::getHeaderSize(DWARF32)); - dwo_cu->SetBaseAddress(GetBaseAddress()); - - m_dwo = std::shared_ptr(std::move(dwo_symbol_file), dwo_cu); } size_t DWARFUnit::GetDebugInfoSize() const { @@ -412,7 +422,7 @@ } dw_offset_t DWARFUnit::GetLineTableOffset() { - ExtractUnitDIEIfNeeded(); + ExtractUnitDIENoDwoIfNeeded(); return m_line_table_offset; } diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h --- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h +++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h @@ -368,6 +368,9 @@ lldb::TypeSP ParseType(const lldb_private::SymbolContext &sc, const DWARFDIE &die, bool *type_is_new); + bool ParseSupportFiles(DWARFUnit &dwarf_cu, const lldb::ModuleSP &module, + lldb_private::FileSpecList &support_files); + lldb_private::Type *ResolveTypeUID(const DWARFDIE &die, bool assert_not_being_parsed); diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp --- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp +++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp @@ -687,6 +687,17 @@ file_spec.SetFile(*remapped_file, FileSpec::Style::native); } +/// Return the DW_AT_(GNU_)dwo_name. +static const char *GetDWOName(DWARFCompileUnit &dwarf_cu, + const DWARFDebugInfoEntry &cu_die) { + const char *dwo_name = + cu_die.GetAttributeValueAsString(&dwarf_cu, DW_AT_GNU_dwo_name, nullptr); + if (!dwo_name) + dwo_name = + cu_die.GetAttributeValueAsString(&dwarf_cu, DW_AT_dwo_name, nullptr); + return dwo_name; +} + lldb::CompUnitSP SymbolFileDWARF::ParseCompileUnit(DWARFCompileUnit &dwarf_cu) { CompUnitSP cu_sp; CompileUnit *comp_unit = (CompileUnit *)dwarf_cu.GetUserData(); @@ -701,25 +712,66 @@ } else { ModuleSP module_sp(m_objfile_sp->GetModule()); if (module_sp) { - const DWARFBaseDIE cu_die = - dwarf_cu.GetNonSkeletonUnit().GetUnitDIEOnly(); - if (cu_die) { - FileSpec cu_file_spec(cu_die.GetName(), dwarf_cu.GetPathStyle()); - MakeAbsoluteAndRemap(cu_file_spec, dwarf_cu, module_sp); - - LanguageType cu_language = SymbolFileDWARF::LanguageTypeFromDWARF( - cu_die.GetAttributeValueAsUnsigned(DW_AT_language, 0)); - - bool is_optimized = dwarf_cu.GetNonSkeletonUnit().GetIsOptimized(); + auto initialize_cu = [&](const FileSpec &file_spec, + LanguageType cu_language) { BuildCuTranslationTable(); cu_sp = std::make_shared( - module_sp, &dwarf_cu, cu_file_spec, + module_sp, &dwarf_cu, file_spec, *GetDWARFUnitIndex(dwarf_cu.GetID()), cu_language, - is_optimized ? eLazyBoolYes : eLazyBoolNo); + eLazyBoolCalculate); dwarf_cu.SetUserData(cu_sp.get()); SetCompileUnitAtIndex(dwarf_cu.GetID(), cu_sp); + }; + + auto lazy_initialize_cu = [&]() { + // If the version is < 5, we can't do lazy initialization. + if (dwarf_cu.GetVersion() < 5) + return false; + + // If there is no DWO, there is no reason to initialize + // lazily; we will do eager initialization in that case. + if (GetDebugMapSymfile()) + return false; + const DWARFBaseDIE cu_die = dwarf_cu.GetUnitDIEOnly(); + if (!cu_die) + return false; + if (!GetDWOName(dwarf_cu, *cu_die.GetDIE())) + return false; + + // With DWARFv5 we can assume that the first support + // file is also the name of the compile unit. This + // allows us to avoid loading the non-skeleton unit, + // which may be in a separate DWO file. + FileSpecList support_files; + if (!ParseSupportFiles(dwarf_cu, module_sp, support_files)) + return false; + if (support_files.GetSize() == 0) + return false; + + initialize_cu(support_files.GetFileSpecAtIndex(0), + eLanguageTypeUnknown); + cu_sp->SetSupportFiles(std::move(support_files)); + return true; + }; + + if (!lazy_initialize_cu()) { + // Eagerly initialize compile unit + const DWARFBaseDIE cu_die = + dwarf_cu.GetNonSkeletonUnit().GetUnitDIEOnly(); + if (cu_die) { + LanguageType cu_language = SymbolFileDWARF::LanguageTypeFromDWARF( + dwarf_cu.GetDWARFLanguageType()); + + FileSpec cu_file_spec(cu_die.GetName(), dwarf_cu.GetPathStyle()); + + // Path needs to be remapped in this case. In the support files + // case ParseSupportFiles takes care of the remapping. + MakeAbsoluteAndRemap(cu_file_spec, dwarf_cu, module_sp); + + initialize_cu(cu_file_spec, cu_language); + } } } } @@ -807,7 +859,7 @@ std::lock_guard guard(GetModuleMutex()); DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); if (dwarf_cu) - return GetLanguage(*dwarf_cu); + return GetLanguage(dwarf_cu->GetNonSkeletonUnit()); else return eLanguageTypeUnknown; } @@ -898,18 +950,29 @@ if (!dwarf_cu) return false; - dw_offset_t offset = dwarf_cu->GetLineTableOffset(); + if (!ParseSupportFiles(*dwarf_cu, comp_unit.GetModule(), support_files)) + return false; + + comp_unit.SetSupportFiles(support_files); + return true; +} + +bool SymbolFileDWARF::ParseSupportFiles(DWARFUnit &dwarf_cu, + const ModuleSP &module, + FileSpecList &support_files) { + + dw_offset_t offset = dwarf_cu.GetLineTableOffset(); if (offset == DW_INVALID_OFFSET) return false; llvm::DWARFDebugLine::Prologue prologue; if (!ParseLLVMLineTablePrologue(m_context, prologue, offset, - dwarf_cu->GetOffset())) + dwarf_cu.GetOffset())) return false; - comp_unit.SetSupportFiles(ParseSupportFilesFromPrologue( - comp_unit.GetModule(), prologue, dwarf_cu->GetPathStyle(), - dwarf_cu->GetCompilationDirectory().GetCString())); + support_files = ParseSupportFilesFromPrologue( + module, prologue, dwarf_cu.GetPathStyle(), + dwarf_cu.GetCompilationDirectory().GetCString()); return true; } @@ -965,7 +1028,7 @@ std::lock_guard guard(GetModuleMutex()); DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); if (dwarf_cu) - return dwarf_cu->GetIsOptimized(); + return dwarf_cu->GetNonSkeletonUnit().GetIsOptimized(); return false; } @@ -1585,17 +1648,6 @@ return DebugInfo().GetDIE(die_ref); } -/// Return the DW_AT_(GNU_)dwo_name. -static const char *GetDWOName(DWARFCompileUnit &dwarf_cu, - const DWARFDebugInfoEntry &cu_die) { - const char *dwo_name = - cu_die.GetAttributeValueAsString(&dwarf_cu, DW_AT_GNU_dwo_name, nullptr); - if (!dwo_name) - dwo_name = - cu_die.GetAttributeValueAsString(&dwarf_cu, DW_AT_dwo_name, nullptr); - return dwo_name; -} - /// Return the DW_AT_(GNU_)dwo_id. /// FIXME: Technically 0 is a valid hash. static uint64_t GetDWOId(DWARFCompileUnit &dwarf_cu, diff --git a/lldb/source/Symbol/CompileUnit.cpp b/lldb/source/Symbol/CompileUnit.cpp --- a/lldb/source/Symbol/CompileUnit.cpp +++ b/lldb/source/Symbol/CompileUnit.cpp @@ -52,7 +52,7 @@ void CompileUnit::GetDescription(Stream *s, lldb::DescriptionLevel level) const { - const char *language = Language::GetNameForLanguageType(m_language); + const char *language = GetCachedLanguage(); *s << "id = " << (const UserID &)*this << ", file = \"" << this->GetPrimaryFile() << "\", language = \"" << language << '"'; } @@ -97,12 +97,18 @@ return {}; } +const char *CompileUnit::GetCachedLanguage() const { + if (m_flags.IsClear(flagsParsedLanguage)) + return ""; + return Language::GetNameForLanguageType(m_language); +} + // Dump the current contents of this object. No functions that cause on demand // parsing of functions, globals, statics are called, so this is a good // function to call to get an idea of the current contents of the CompileUnit // object. void CompileUnit::Dump(Stream *s, bool show_context) const { - const char *language = Language::GetNameForLanguageType(m_language); + const char *language = GetCachedLanguage(); s->Printf("%p: ", static_cast(this)); s->Indent(); diff --git a/lldb/test/Shell/SymbolFile/DWARF/dwarf5-lazy-dwo.c b/lldb/test/Shell/SymbolFile/DWARF/dwarf5-lazy-dwo.c new file mode 100644 --- /dev/null +++ b/lldb/test/Shell/SymbolFile/DWARF/dwarf5-lazy-dwo.c @@ -0,0 +1,30 @@ +// Test we load dwo information lazily. + +// RUN: %clang_host %s -fno-standalone-debug -g \ +// RUN: -gdwarf-5 -gpubnames -gsplit-dwarf -c -o %t1.o -DONE +// RUN: %clang_host %s -fno-standalone-debug -g \ +// RUN: -gdwarf-5 -gpubnames -gsplit-dwarf -c -o %t2.o -DTWO +// RUN: %clang_host %t1.o %t2.o -o %t +// RUN: %lldb %t -o "log enable ll""db object" -o "settings set stop-line-count-before 0" \ +// RUN: -o "b main" -o "run" -o "image lookup -n main -v" -b | FileCheck %s + +// CHECK-NOT: 2.dwo, +// CHECK: (lldb) b main +// CHECK-NOT: 2.dwo, +// CHECK: 1.dwo, +// CHECK-NOT: 2.dwo, +// CHECK: (lldb) run +// CHECK-NOT: 2.dwo, +// CHECK: stop reason = breakpoint +// CHECK-NOT: 2.dwo, +// CHECK: (lldb) image lookup +// CHECK-NOT: 2.dwo, +// CHECK: CompileUnit: id = {0x00000000}, file = +// CHECK-SAME: language = "c99" +// CHECK-NOT: 2.dwo, + +#ifdef ONE +int main() { return 0; } +#else +int x; +#endif diff --git a/lldb/test/Shell/SymbolFile/DWARF/lit.local.cfg b/lldb/test/Shell/SymbolFile/DWARF/lit.local.cfg --- a/lldb/test/Shell/SymbolFile/DWARF/lit.local.cfg +++ b/lldb/test/Shell/SymbolFile/DWARF/lit.local.cfg @@ -1 +1 @@ -config.suffixes = ['.cpp', '.m', '.mm', '.s', '.test', '.ll'] +config.suffixes = ['.cpp', '.m', '.mm', '.s', '.test', '.ll', '.c'] diff --git a/lldb/test/Shell/SymbolFile/DWARF/split-optimized.c b/lldb/test/Shell/SymbolFile/DWARF/split-optimized.c new file mode 100644 --- /dev/null +++ b/lldb/test/Shell/SymbolFile/DWARF/split-optimized.c @@ -0,0 +1,19 @@ +// Test that optimized flag is properly included in DWARF. + +// RUN: %clang_host %s -fno-standalone-debug -glldb \ +// RUN: -gdwarf-5 -gpubnames -gsplit-dwarf -O3 -c -o %t1.o + +// RUN: llvm-dwarfdump %t1.o | FileCheck %s --check-prefix DWARFDUMP_O +// RUN: llvm-dwarfdump %t1.dwo | FileCheck %s --check-prefix DWARFDUMP_DWO +// RUN: %lldb -b -o 'script lldb.SBDebugger.Create().CreateTarget("%t1.o").FindFunctions("main",lldb.eFunctionNameTypeAuto).GetContextAtIndex(0).GetFunction().GetIsOptimized()' | FileCheck %s + +// DWARFDUMP_O-NOT: DW_AT_APPLE_optimized +// +// DWARFDUMP_DWO: DW_TAG_compile_unit +// DWARFDUMP_DWO-NOT: DW_TAG_ +// DWARFDUMP_DWO: DW_AT_APPLE_optimized (true) + +// CHECK: (lldb) script lldb.SBDebugger.Create() +// CHECK-NEXT: True + +int main(void) { return 0; } diff --git a/lldb/test/Shell/SymbolFile/DWARF/x86/dwp.s b/lldb/test/Shell/SymbolFile/DWARF/x86/dwp.s --- a/lldb/test/Shell/SymbolFile/DWARF/x86/dwp.s +++ b/lldb/test/Shell/SymbolFile/DWARF/x86/dwp.s @@ -10,40 +10,40 @@ # CHECK: (INT3) A = 3 # CHECK-LABEL: image lookup -v -n F1 -# CHECK: CompileUnit: id = {0x00000001}, file = "1.c", language = "unknown" +# CHECK: CompileUnit: id = {0x00000001}, file = "1.c", language = "" # CHECK: Function: {{.*}}, name = "F1", range = [0x0000000000000001-0x0000000000000002) # CHECK: Variable: {{.*}}, name = "x", type = "int", location = DW_OP_reg1 RDX # SYMBOLS: Compile units: -# SYMBOLS-NEXT: CompileUnit{0x00000000}, language = "unknown", file = '0.c' +# SYMBOLS-NEXT: CompileUnit{0x00000000}, language = "", file = '0.c' # SYMBOLS-NEXT: Variable{{.*}}, name = "A", {{.*}}, location = DW_OP_GNU_addr_index 0x0 # SYMBOLS-NEXT: Function{{.*}}, demangled = F0 # SYMBOLS-NEXT: Block{{.*}}, ranges = [0x00000000-0x00000001) # SYMBOLS-NEXT: Variable{{.*}}, name = "x", {{.*}}, location = # SYMBOLS-NEXT: DW_LLE_startx_length (0x0000000000000001, 0x0000000000000001): DW_OP_reg0 RAX # SYMBOLS-EMPTY: -# SYMBOLS-NEXT: CompileUnit{0x00000001}, language = "unknown", file = '1.c' +# SYMBOLS-NEXT: CompileUnit{0x00000001}, language = "", file = '1.c' # SYMBOLS-NEXT: Variable{{.*}}, name = "A", {{.*}}, location = DW_OP_GNU_addr_index 0x2 # SYMBOLS-NEXT: Function{{.*}}, demangled = F1 # SYMBOLS-NEXT: Block{{.*}}, ranges = [0x00000001-0x00000002) # SYMBOLS-NEXT: Variable{{.*}}, name = "x", {{.*}}, location = # SYMBOLS-NEXT: DW_LLE_startx_length (0x0000000000000003, 0x0000000000000001): DW_OP_reg1 RDX # SYMBOLS-EMPTY: -# SYMBOLS-NEXT: CompileUnit{0x00000002}, language = "unknown", file = '2.c' +# SYMBOLS-NEXT: CompileUnit{0x00000002}, language = "", file = '2.c' # SYMBOLS-NEXT: Variable{{.*}}, name = "A", {{.*}}, location = DW_OP_GNU_addr_index 0x4 # SYMBOLS-NEXT: Function{{.*}}, demangled = F2 # SYMBOLS-NEXT: Block{{.*}}, ranges = [0x00000002-0x00000003) # SYMBOLS-NEXT: Variable{{.*}}, name = "x", {{.*}}, location = # SYMBOLS-NEXT: DW_LLE_startx_length (0x0000000000000005, 0x0000000000000001): DW_OP_reg2 RCX # SYMBOLS-EMPTY: -# SYMBOLS-NEXT: CompileUnit{0x00000003}, language = "unknown", file = '3.c' +# SYMBOLS-NEXT: CompileUnit{0x00000003}, language = "", file = '3.c' # SYMBOLS-NEXT: Variable{{.*}}, name = "A", {{.*}}, location = DW_OP_GNU_addr_index 0x6 # SYMBOLS-NEXT: Function{{.*}}, demangled = F3 # SYMBOLS-NEXT: Block{{.*}}, ranges = [0x00000003-0x00000004) # SYMBOLS-NEXT: Variable{{.*}}, name = "x", {{.*}}, location = # SYMBOLS-NEXT: DW_LLE_startx_length (0x0000000000000007, 0x0000000000000001): DW_OP_reg3 RBX # SYMBOLS-EMPTY: -# SYMBOLS-NEXT: CompileUnit{0x00000004}, language = "unknown", file = '' +# SYMBOLS-NEXT: CompileUnit{0x00000004}, language = "", file = '' # SYMBOLS-EMPTY: .section .debug_abbrev,"",@progbits