Change getRelocationAdditionalInfo to be ELF only.

It was only implemented for ELF where it collected the Addend, so this
patch also renames it to getRelocationAddend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181502 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
index d4d84d3..57676ff 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
@@ -519,10 +519,10 @@
 
       SymbolRef TargetSymbol;
       uint64_t TargetSymbolOffset;
-      int64_t TargetAdditionalInfo;
       check(i->getSymbol(TargetSymbol));
       check(i->getOffset(TargetSymbolOffset));
-      check(i->getAdditionalInfo(TargetAdditionalInfo));
+      int64_t Addend;
+      check(getELFRelocationAddend(*i, Addend));
 
       i = i.increment(err);
       if (i == e)
@@ -544,7 +544,7 @@
       section_iterator tsi(Obj.end_sections());
       check(TargetSymbol.getSection(tsi));
       Rel.SectionID = findOrEmitSection(Obj, (*tsi), true, LocalSections);
-      Rel.Addend = (intptr_t)TargetAdditionalInfo;
+      Rel.Addend = (intptr_t)Addend;
       return;
     }
   }
@@ -742,7 +742,7 @@
   uint64_t RelType;
   Check(RelI.getType(RelType));
   int64_t Addend;
-  Check(RelI.getAdditionalInfo(Addend));
+  Check(getELFRelocationAddend(RelI, Addend));
   SymbolRef Symbol;
   Check(RelI.getSymbol(Symbol));