Enable 64bit elf object handling.

Change-Id: Ib952abf882fd9bd0d5cadaa3b204a100bd71aa1e
diff --git a/lib/ExecutionEngine/ELFObjectLoaderImpl.h b/lib/ExecutionEngine/ELFObjectLoaderImpl.h
index bc96eb4..52719e7 100644
--- a/lib/ExecutionEngine/ELFObjectLoaderImpl.h
+++ b/lib/ExecutionEngine/ELFObjectLoaderImpl.h
@@ -31,8 +31,13 @@
 
 class ELFObjectLoaderImpl : public ObjectLoaderImpl {
 private:
+#ifdef __LP64__
+  ELFObject<64> *mObject;
+  ELFSectionSymTab<64> *mSymTab;
+#else
   ELFObject<32> *mObject;
   ELFSectionSymTab<32> *mSymTab;
+#endif
 
 public:
   ELFObjectLoaderImpl() : ObjectLoaderImpl(), mObject(NULL), mSymTab(NULL) { }