Debug Info: code clean up.

Use EmitLabelOffsetDifference for handling on darwin platform when
non-darwin platforms use EmitLabelPlusOffset.

Also fix a bug in EmitLabelOffsetDifference where the size is hard-coded
to 4 even though Size is passed in as an argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193660 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 722dd32..6713df8 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2082,7 +2082,9 @@
           Asm->EmitLabelPlusOffset(DwarfInfoSectionSym, Addr,
                                    DIEEntry::getRefAddrSize(Asm));
         else
-          Asm->OutStreamer.EmitIntValue(Addr, DIEEntry::getRefAddrSize(Asm));
+          Asm->EmitLabelOffsetDifference(DwarfInfoSectionSym, Addr,
+                                         DwarfInfoSectionSym,
+                                         DIEEntry::getRefAddrSize(Asm));
       } else {
         Asm->EmitInt32(Addr);
       }