diff --git a/llvm/lib/Bitcode/Writer/SerializeAPFloat.cpp b/llvm/lib/Bitcode/Writer/SerializeAPFloat.cpp
new file mode 100644
index 0000000..6482a47
--- /dev/null
+++ b/llvm/lib/Bitcode/Writer/SerializeAPFloat.cpp
@@ -0,0 +1,21 @@
+//===-- SerializeAPInt.cpp - Serialization for APFloat ---------*- C++ -*--===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Ted Kremenek and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements serialization of APFloat.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/APFloat.h"
+#include "llvm/Bitcode/Serialize.h"
+
+using namespace llvm;
+
+void APFloat::Emit(Serializer& S) const {
+  S.Emit(convertToAPInt());
+}