//
// This API represents memory as a (Pointer, Size) pair. The Pointer component
// specifies the base memory address of the region, the Size specifies how large
-// of an area is being queried. If Size is 0, two pointers only alias if they
-// are exactly equal. If size is greater than zero, but small, the two pointers
-// alias if the areas pointed to overlap. If the size is very large (ie, ~0U),
-// then the two pointers alias if they may be pointing to components of the same
-// memory object. Pointers that point to two completely different objects in
-// memory never alias, regardless of the value of the Size component.
+// of an area is being queried, or UnknownSize if the size is not known.
+// Pointers that point to two completely different objects in memory never
+// alias, regardless of the value of the Size component.
//
//===----------------------------------------------------------------------===//
/// if (AA.alias(P1, P2)) { ... }
/// to check to see if two pointers might alias.
///
+ /// See docs/AliasAnalysis.html for more information on the specific meanings
+ /// of these values.
+ ///
enum AliasResult { NoAlias = 0, MayAlias = 1, MustAlias = 2 };
/// alias - The main low level interface to the alias analysis implementation.