Use a more direct check for finding out the file type.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196811 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/LTO/LTOModule.h

@@ -19,6 +19,7 @@
 #include "llvm/ADT/StringMap.h"
 #include "llvm/IR/Module.h"
 #include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/Target/Mangler.h"
 #include "llvm/Target/TargetMachine.h"
 #include <string>
@@ -49,6 +50,7 @@ private:
 
   llvm::OwningPtr<llvm::Module>           _module;
   llvm::OwningPtr<llvm::TargetMachine>    _target;
+  llvm::MCObjectFileInfo ObjFileInfo;
   std::vector<NameAndAttributes>          _symbols;
 
   // _defines and _undefines only needed to disambiguate tentative definitions

include/llvm/MC/MCObjectFileInfo.h

@@ -353,8 +353,12 @@ public:
     return EHFrameSection;
   }
 
-private:
   enum Environment { IsMachO, IsELF, IsCOFF };
+  Environment getObjectFileType() const {
+    return Env;
+  }
+
+private:
   Environment Env;
   Reloc::Model RelocM;
   CodeModel::Model CMModel;