From c47dfdde2458f97d2ef8342b73b526579424c381 Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Wed, 7 Nov 2007 18:39:22 +0000
Subject: [PATCH] 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                |  7 +++++++
 lib/Bitcode/Reader/DeserializeAPFloat.cpp | 24 +++++++++++++++++++++++
 lib/Bitcode/Writer/SerializeAPFloat.cpp   | 21 ++++++++++++++++++++
 3 files changed, 52 insertions(+)
 create mode 100644 lib/Bitcode/Reader/DeserializeAPFloat.cpp
 create mode 100644 lib/Bitcode/Writer/SerializeAPFloat.cpp

diff --git a/include/llvm/ADT/APFloat.h b/include/llvm/ADT/APFloat.h
index 09a9ece1402..e4d4c8eb420 100644
--- a/include/llvm/ADT/APFloat.h
+++ b/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);
diff --git a/lib/Bitcode/Reader/DeserializeAPFloat.cpp b/lib/Bitcode/Reader/DeserializeAPFloat.cpp
new file mode 100644
index 00000000000..c2fe01bfb75
--- /dev/null
+++ b/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);
+}
+
diff --git a/lib/Bitcode/Writer/SerializeAPFloat.cpp b/lib/Bitcode/Writer/SerializeAPFloat.cpp
new file mode 100644
index 00000000000..6482a474ef9
--- /dev/null
+++ b/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());
+}