Index: lib/MC/MCObjectFileInfo.cpp =================================================================== --- lib/MC/MCObjectFileInfo.cpp +++ lib/MC/MCObjectFileInfo.cpp @@ -273,6 +273,17 @@ case Triple::mips64el: FDECFIEncoding = dwarf::DW_EH_PE_sdata8; break; + case Triple::x86_64: + if (RelocM == Reloc::PIC_) { + FDECFIEncoding = dwarf::DW_EH_PE_pcrel | + ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium) + ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8); + } else { + FDECFIEncoding = + (CMModel == CodeModel::Small || CMModel == CodeModel::Medium) + ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr; + } + break; default: FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4; break;