Add facility to dump pass manager structure

[oota-llvm.git] / include / llvm / Support / ConstantRange.h

diff --git a/include/llvm/Support/ConstantRange.h b/include/llvm/Support/ConstantRange.h
index 92f3716eb502ef1eba26a98d75025b5977e37741..778827c0e0f658f89e752db6573f711b1232e0e3 100644 (file)
--- a/include/llvm/Support/ConstantRange.h
+++ b/include/llvm/Support/ConstantRange.h
@@ -40,7 +40,7 @@ namespace llvm {
 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.
   ///
@@ -79,13 +79,11 @@ class ConstantRange {
   /// 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.
@@ -104,6 +102,26 @@ class ConstantRange {
   ///
   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 {
@@ -123,7 +141,16 @@ class ConstantRange {
   /// 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
@@ -131,7 +158,7 @@ class ConstantRange {
   /// [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
@@ -139,6 +166,12 @@ class ConstantRange {
   /// 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