class ConstantRange {
APInt Lower, Upper;
static ConstantRange intersect1Wrapped(const ConstantRange &LHS,
- const ConstantRange &RHS, bool sign);
+ const ConstantRange &RHS);
public:
/// Initialize a full (the default) or empty set for the specified bit width.
///
/// isWrappedSet - Return true if this set wraps around the top of the range,
/// for example: [100, 8)
///
- bool isWrappedSet(bool isSigned) const;
+ bool isWrappedSet() const;
/// contains - Return true if the specified value is in the set.
- /// The isSigned parameter indicates whether the comparisons should be
- /// performed as if the values are signed or not.
///
- bool contains(const APInt &Val, bool isSigned) const;
+ bool contains(const APInt &Val) const;
/// getSingleElement - If this set contains a single element, return it,
/// otherwise return null.
///
APInt getSetSize() const;
+ /// getUnsignedMax - Return the largest unsigned value contained in the
+ /// ConstantRange.
+ ///
+ APInt getUnsignedMax() const;
+
+ /// getUnsignedMin - Return the smallest unsigned value contained in the
+ /// ConstantRange.
+ ///
+ APInt getUnsignedMin() const;
+
+ /// getSignedMax - Return the largest signed value contained in the
+ /// ConstantRange.
+ ///
+ APInt getSignedMax() const;
+
+ /// getSignedMin - Return the smallest signed value contained in the
+ /// ConstantRange.
+ ///
+ APInt getSignedMin() const;
+
/// operator== - Return true if this range is equal to another range.
///
bool operator==(const ConstantRange &CR) const {
/// one of the sets but not the other. For example: [100, 8) intersect [3,
/// 120) yields [3, 120)
///
- ConstantRange intersectWith(const ConstantRange &CR, bool isSigned) const;
+ ConstantRange intersectWith(const ConstantRange &CR) const;
+
+ /// maximalIntersectWith - Return the range that results from the intersection
+ /// of this range with another range. The resultant range is guaranteed to
+ /// include all elements contained in both input ranges, and to have the
+ /// smallest possible set size that does so. Because there may be two
+ /// intersections with the same set size, A.maximalIntersectWith(B) might not
+ /// be equal to B.maximalIntersectWith(A).
+ ///
+ ConstantRange maximalIntersectWith(const ConstantRange &CR) const;
/// unionWith - Return the range that results from the union of this range
/// with another range. The resultant range is guaranteed to include the
/// [12,15) is [3, 15), which includes 9, 10, and 11, which were not included
/// in either set before.
///
- ConstantRange unionWith(const ConstantRange &CR, bool isSigned) const;
+ ConstantRange unionWith(const ConstantRange &CR) const;
/// zeroExtend - Return a new range in the specified integer type, which must
/// be strictly larger than the current type. The returned range will
/// zero extended to BitWidth.
ConstantRange zeroExtend(uint32_t BitWidth) const;
+ /// signExtend - Return a new range in the specified integer type, which must
+ /// be strictly larger than the current type. The returned range will
+ /// correspond to the possible range of values if the source range had been
+ /// sign extended to BitWidth.
+ ConstantRange signExtend(uint32_t BitWidth) const;
+
/// truncate - Return a new range in the specified integer type, which must be
/// strictly smaller than the current type. The returned range will
/// correspond to the possible range of values if the source range had been