diff options
Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp index b9a17d5018c..58ef279a9f6 100644 --- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp @@ -128,6 +128,11 @@ static cl::opt<bool> cl::desc("Disable emission of DWARF pub sections."), cl::init(false)); +static cl::opt<bool> + NoDwarfRangesSection("no-dwarf-ranges-section", cl::Hidden, + cl::desc("Disable emission .debug_ranges section."), + cl::init(false)); + enum LinkageNameOption { DefaultLinkageNames, AllLinkageNames, @@ -316,6 +321,7 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M) DwarfVersion = DwarfVersion ? DwarfVersion : dwarf::DWARF_VERSION; UsePubSections = !NoDwarfPubSections; + UseRangesSection = !NoDwarfRangesSection; // Work around a GDB bug. GDB doesn't support the standard opcode; // SCE doesn't support GNU's; LLDB prefers the standard opcode, which @@ -744,7 +750,7 @@ void DwarfDebug::finalizeModuleInfo() { // ranges for all subprogram DIEs for mach-o. DwarfCompileUnit &U = SkCU ? *SkCU : TheCU; if (unsigned NumRanges = TheCU.getRanges().size()) { - if (NumRanges > 1) + if (NumRanges > 1 && useRangesSection()) // A DW_AT_low_pc attribute may also be specified in combination with // DW_AT_ranges to specify the default base address for use in // location lists (see Section 2.6.2) and range lists (see Section @@ -1906,6 +1912,16 @@ void DwarfDebug::emitDebugRanges() { if (CUMap.empty()) return; + if (!useRangesSection()) { + assert(llvm::all_of( + CUMap, + [](const decltype(CUMap)::const_iterator::value_type &Pair) { + return Pair.second->getRangeLists().empty(); + }) && + "No debug ranges expected."); + return; + } + // Start the dwarf ranges section. Asm->OutStreamer->SwitchSection( Asm->getObjFileLowering().getDwarfRangesSection()); |
