Pull in r213890 from upstream llvm trunk (by Jörg Sonnenberger):

  Use the same .eh_frame encoding for 32bit PPC as on i386.

This fixes DT_TEXTREL errors when linking C++ objects using exceptions
on PowerPC.

Introduced here: http://svnweb.freebsd.org/changeset/base/276300

Index: lib/MC/MCObjectFileInfo.cpp
===================================================================
--- lib/MC/MCObjectFileInfo.cpp
+++ lib/MC/MCObjectFileInfo.cpp
@@ -287,6 +287,7 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Tri
     if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
       break;
     // Fallthrough if not using EHABI
+  case Triple::ppc:
   case Triple::x86:
     PersonalityEncoding = (RelocM == Reloc::PIC_)
      ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4