class ConstantRange {
APInt Lower, Upper;
+#if LLVM_HAS_RVALUE_REFERENCES
+ // If we have move semantics, pass APInts by value and move them into place.
+ typedef APInt APIntMoveTy;
+#else
+ // Otherwise pass by const ref to save one copy.
+ typedef const APInt &APIntMoveTy;
+#endif
+
public:
/// Initialize a full (the default) or empty set for the specified bit width.
///
/// Initialize a range to hold the single specified value.
///
- ConstantRange(const APInt &Value);
+ ConstantRange(APIntMoveTy Value);
/// @brief Initialize a range of values explicitly. This will assert out if
/// Lower==Upper and Lower != Min or Max value for its type. It will also
/// assert out if the two APInt's are not the same bit width.
- ConstantRange(const APInt &Lower, const APInt &Upper);
+ ConstantRange(APIntMoveTy Lower, APIntMoveTy Upper);
/// makeICmpRegion - Produce the smallest range that contains all values that
/// might satisfy the comparison specified by Pred when compared to any value