The DW_AT_GNU_pubnames/pubtypes attributes are actually form
SEC_OFFSET from the beginning of the section so go ahead and emit
a label at the beginning of each one.

llvm-svn: 191710
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index e774c65..144635e 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -411,6 +411,7 @@
   MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
   MCSymbol *FunctionBeginSym, *FunctionEndSym;
   MCSymbol *DwarfAbbrevDWOSectionSym, *DwarfStrDWOSectionSym;
+  MCSymbol *DwarfGnuPubNamesSectionSym, *DwarfGnuPubTypesSectionSym;
 
   // As an optimization, there is no need to emit an entry in the directory
   // table for the same directory as DW_AT_comp_dir.