[llvm] r202883 - APFloat: Add a move ctor and operator=

[Benjamin Kramer]

Author: d0k
Date: Tue Mar  4 14:26:51 2014
New Revision: 202883

URL: http://llvm.org/viewvc/llvm-project?rev=202883&view=rev
Log:
APFloat: Add a move ctor and operator=

Modified:
    llvm/trunk/include/llvm/ADT/APFloat.h
    llvm/trunk/lib/Support/APFloat.cpp

Modified: llvm/trunk/include/llvm/ADT/APFloat.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/APFloat.h?rev=202883&r1=202882&r2=202883&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/APFloat.h (original)
+++ llvm/trunk/include/llvm/ADT/APFloat.h Tue Mar  4 14:26:51 2014
@@ -196,6 +196,7 @@ public:
   explicit APFloat(double d);
   explicit APFloat(float f);
   APFloat(const APFloat &);
+  APFloat(APFloat &&);
   ~APFloat();
 
   /// @}
@@ -411,6 +412,7 @@ public:
   /// @}
 
   APFloat &operator=(const APFloat &);
+  APFloat &operator=(APFloat &&);
 
   /// \brief Overload to compute a hash code for an APFloat value.
   ///

Modified: llvm/trunk/lib/Support/APFloat.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/APFloat.cpp?rev=202883&r1=202882&r2=202883&view=diff
==============================================================================
--- llvm/trunk/lib/Support/APFloat.cpp (original)
+++ llvm/trunk/lib/Support/APFloat.cpp Tue Mar  4 14:26:51 2014
@@ -683,6 +683,20 @@ APFloat::operator=(const APFloat &rhs)
   return *this;
 }
 
+APFloat &
+APFloat::operator=(APFloat &&rhs) {
+  freeSignificand();
+
+  semantics = rhs.semantics;
+  significand = rhs.significand;
+  exponent = rhs.exponent;
+  category = rhs.category;
+  sign = rhs.sign;
+
+  rhs.semantics = &Bogus;
+  return *this;
+}
+
 bool
 APFloat::isDenormal() const {
   return isFiniteNonZero() && (exponent == semantics->minExponent) &&
@@ -806,6 +820,10 @@ APFloat::APFloat(const APFloat &rhs) {
   assign(rhs);
 }
 
+APFloat::APFloat(APFloat &&rhs) : semantics(&Bogus) {
+  *this = std::move(rhs);
+}
+
 APFloat::~APFloat()
 {
   freeSignificand();