Fix VC++ build error.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26773 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp
index 796ad82..a56b77d 100644
--- a/utils/TableGen/IntrinsicEmitter.cpp
+++ b/utils/TableGen/IntrinsicEmitter.cpp
@@ -14,6 +14,7 @@
 #include "IntrinsicEmitter.h"
 #include "Record.h"
 #include "llvm/ADT/StringExtras.h"
+#include <algorithm>
 using namespace llvm;
 
 //===----------------------------------------------------------------------===//