Changes so that iMemory.h doesn't include DerivedTypes.h

llvm-svn: 2404
diff --git a/llvm/lib/VMCore/AsmWriter.cpp b/llvm/lib/VMCore/AsmWriter.cpp
index 8e5de34..90ce6ba 100644
--- a/llvm/lib/VMCore/AsmWriter.cpp
+++ b/llvm/lib/VMCore/AsmWriter.cpp
@@ -11,6 +11,7 @@
 #include "llvm/Assembly/CachedWriter.h"
 #include "llvm/Assembly/Writer.h"
 #include "llvm/SlotCalculator.h"
+#include "llvm/DerivedTypes.h"
 #include "llvm/Module.h"
 #include "llvm/Function.h"
 #include "llvm/GlobalVariable.h"