diff --git a/llvm/lib/CodeGen/AsmPrinter/DIE.cpp b/llvm/lib/CodeGen/AsmPrinter/DIE.cpp index 57e0acda890f..326fbe55672c 100644 --- a/llvm/lib/CodeGen/AsmPrinter/DIE.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/DIE.cpp @@ -310,6 +310,12 @@ void DIEEntry::EmitValue(AsmPrinter *AP, unsigned Form) const { AP->EmitInt32(Entry->getOffset()); } +unsigned DIEEntry::SizeOf(AsmPrinter *AP, unsigned Form) const { + if (Form == dwarf::DW_FORM_ref_addr) + return AP->getDataLayout().getPointerSize(); + return sizeof(int32_t); +} + #ifndef NDEBUG void DIEEntry::print(raw_ostream &O) { O << format("Die: 0x%lx", (long)(intptr_t)Entry); diff --git a/llvm/lib/CodeGen/AsmPrinter/DIE.h b/llvm/lib/CodeGen/AsmPrinter/DIE.h index c332aa2a7db6..8d68fd595fab 100644 --- a/llvm/lib/CodeGen/AsmPrinter/DIE.h +++ b/llvm/lib/CodeGen/AsmPrinter/DIE.h @@ -336,9 +336,7 @@ namespace llvm { /// SizeOf - Determine size of debug information entry in bytes. /// - virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const { - return sizeof(int32_t); - } + virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const; // Implement isa/cast/dyncast. static bool classof(const DIEValue *E) { return E->getType() == isEntry; } diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp index d3cb4f9c1c0e..b6b0bb1237cb 100644 --- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp @@ -1791,7 +1791,14 @@ void DwarfDebug::emitDIE(DIE *Die, std::vector *Abbrevs) { DwarfUnits &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder; Addr += Holder.getCUOffset(Origin->getCompileUnit()); } - Asm->EmitInt32(Addr); + // DWARF4: References that use the attribute form DW_FORM_ref_addr are + // specified to be four bytes in the DWARF 32-bit format and eight bytes + // in the DWARF 64-bit format, while DWARF Version 2 specifies that such + // references have the same size as an address on the target system. + // Our current version is version 2. + Asm->OutStreamer.EmitIntValue(Addr, + Form == dwarf::DW_FORM_ref_addr ? + Asm->getDataLayout().getPointerSize() : 4); break; } case dwarf::DW_AT_ranges: {