Implemented generic serialization of APFloat.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43829 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/APFloat.h

@@ -102,6 +102,7 @@
 
 // APInt contains static functions implementing bignum arithmetic.
 #include "llvm/ADT/APInt.h"
+#include "llvm/Bitcode/SerializationFwd.h"
 #include "llvm/CodeGen/ValueTypes.h"
 
 namespace llvm {
@@ -181,6 +182,12 @@ namespace llvm {
     explicit APFloat(const APInt &, bool isIEEE = false);
     APFloat(const APFloat &);
     ~APFloat();
+    
+    /// @brief Used by the Bitcode serializer to emit APInts to Bitcode.
+    void Emit(Serializer& S) const;
+    
+    /// @brief Used by the Bitcode deserializer to deserialize APInts.
+    static APFloat ReadVal(Deserializer& D);
 
     /* Arithmetic.  */
     opStatus add(const APFloat &, roundingMode);

lib/Bitcode/Reader/DeserializeAPFloat.cpp

@@ -0,0 +1,24 @@
+//===-- 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 deserialization of APFloat.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/APFloat.h"
+#include "llvm/Bitcode/Deserialize.h"
+
+using namespace llvm;
+
+APFloat APFloat::ReadVal(Deserializer& D) {
+  APInt x;
+  D.Read(x);
+  return APFloat(x);
+}
+

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());
+}