Remove (unused) RegionExtent and subclasses. Extents are now represented easily using SVals.

llvm-svn: 60576

clang/include/clang/Analysis/PathSensitive/MemRegion.h

@@ -439,85 +439,6 @@ public:
   }
 };
 
-/// RegionExtent - Represents the size, or extent, of an abstract memory chunk
-/// (a region).  Sizes are in bits.  RegionExtent is essentially a variant with
-/// three subclasses: UnknownExtent, FixedExtent, and SymbolicExtent.
-
-class RegionExtent {
-public:
-  enum Kind { Unknown = 0, Fixed = 0, Sym = 1 };
-
-protected:
-  const uintptr_t Raw;
-  RegionExtent(uintptr_t raw, Kind k) : Raw(raw | k) {}
-  uintptr_t getData() const { return Raw & ~0x1; }
-
-public:
-  // Folding-set profiling.
-  void Profile(llvm::FoldingSetNodeID& ID) const {
-    ID.AddPointer((void*) Raw);
-  }
-  // Comparing extents.
-  bool operator==(const RegionExtent& R) const {
-    return Raw == R.Raw;
-  }
-  bool operator!=(const RegionExtent& R) const {
-    return Raw != R.Raw;
-  }
-  // Implement isa<T> support.
-  Kind getKind() const { return Kind(Raw & 0x1); }
-  uintptr_t getRaw() const { return Raw; }
-
-  static inline bool classof(const RegionExtent*) {
-    return true;
-  }
-};
-
-/// UnknownExtent - Represents a region extent with no available information
-///  about the size of the region.
-class UnknownExtent : public RegionExtent {
-public:
-  UnknownExtent() : RegionExtent(0,Unknown) {}
-
-  // Implement isa<T> support.
-  static inline bool classof(const RegionExtent* E) {
-    return E->getRaw() == 0;
-  }
-};
-
-/// FixedExtent - Represents a region extent with a known fixed size.
-///  Typically FixedExtents are used to represent the size of variables, but
-///  they can also be used to represent the size of a constant-sized array.
-class FixedExtent : public RegionExtent {
-public:
-  FixedExtent(const llvm::APSInt& X) : RegionExtent((uintptr_t) &X, Fixed) {}
-
-  const llvm::APSInt& getInt() const {
-    return *((llvm::APSInt*) getData());
-  }
-
-  // Implement isa<T> support.
-  static inline bool classof(const RegionExtent* E) {
-    return E->getKind() == Fixed && E->getRaw() != 0;
-  }
-};
-
-/// SymbolicExtent - Represents the extent of a region where the extent
-///  itself is a symbolic value.  These extents can be used to represent
-///  the sizes of dynamically allocated chunks of memory with variable size.
-class SymbolicExtent : public RegionExtent {
-public:
-  SymbolicExtent(SymbolRef S) : RegionExtent(S.getNumber() << 1, Sym) {}
-
-  SymbolRef getSymbol() const { return SymbolRef(getData() >> 1); }
-
-  // Implement isa<T> support.
-  static inline bool classof(const RegionExtent* E) {
-    return E->getKind() == Sym;
-  }
-};
-
-
 //===----------------------------------------------------------------------===//
 // MemRegionManager - Factory object for creating regions.
 //===----------------------------------------------------------------------===//