Add explicit #includes of <iostream>

llvm-svn: 25515
diff --git a/llvm/lib/Target/Alpha/AlphaAsmPrinter.cpp b/llvm/lib/Target/Alpha/AlphaAsmPrinter.cpp
index 29627c5..133f6c6 100644
--- a/llvm/lib/Target/Alpha/AlphaAsmPrinter.cpp
+++ b/llvm/lib/Target/Alpha/AlphaAsmPrinter.cpp
@@ -22,7 +22,7 @@
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/Mangler.h"
 #include "llvm/ADT/Statistic.h"
-
+#include <iostream>
 using namespace llvm;
 
 namespace {