From: Dale Johannesen <dalej@apple.com>
Date: Fri, 24 Aug 2007 20:59:15 +0000 (+0000)
Subject: Use APFloat internally for ConstantFPSDNode.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8bb369b8072c919ef5802f639a52b17620201190;p=oota-llvm.git

Use APFloat internally for ConstantFPSDNode.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41372 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index b0278cbc5be..9068d780996 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -23,6 +23,7 @@
 #include "llvm/ADT/FoldingSet.h"
 #include "llvm/ADT/GraphTraits.h"
 #include "llvm/ADT/iterator"
+#include "llvm/ADT/APFloat.h"
 #include "llvm/CodeGen/ValueTypes.h"
 #include "llvm/Support/DataTypes.h"
 #include <cassert>
@@ -1144,17 +1145,17 @@ public:
 };
 
 class ConstantFPSDNode : public SDNode {
-  double Value;
+  APFloat Value;
   virtual void ANCHOR();  // Out-of-line virtual method to give class a home.
 protected:
   friend class SelectionDAG;
   ConstantFPSDNode(bool isTarget, double val, MVT::ValueType VT)
     : SDNode(isTarget ? ISD::TargetConstantFP : ISD::ConstantFP,
-             getSDVTList(VT)), Value(val) {
+             getSDVTList(VT)), Value(APFloat(val)) {
   }
 public:
 
-  double getValue() const { return Value; }
+  double getValue() const { return Value.convertToDouble(); }
 
   /// isExactlyValue - We don't rely on operator== working on double values, as
   /// it returns true for things that are clearly not equal, like -0.0 and 0.0.
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 7ac8ea81aa6..10ffdc42b15 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -49,7 +49,7 @@ static SDVTList makeVTList(const MVT::ValueType *VTs, unsigned NumVTs) {
 /// As such, this method can be used to do an exact bit-for-bit comparison of
 /// two floating point values.
 bool ConstantFPSDNode::isExactlyValue(double V) const {
-  return DoubleToBits(V) == DoubleToBits(Value);
+  return Value == APFloat(V);
 }
 
 //===----------------------------------------------------------------------===//