Add explicit #includes of <iostream>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25515 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/IA64/IA64TargetMachine.cpp

@@ -23,6 +23,7 @@
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/ADT/Statistic.h"
+#include <iostream>
 using namespace llvm;
 
 /// IA64TargetMachineModule - Note that this is used on hosts that cannot link