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Update some comments.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110092 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-08-03 01:07:32 +00:00
parent ef1cfac9e5
commit e53e3772f3
1 changed files with 6 additions and 6 deletions
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12
include/llvm/Analysis/AliasAnalysis.h
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@ -18,12 +18,9 @@
// //
// This API represents memory as a (Pointer, Size) pair. The Pointer component // 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 // 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 // of an area is being queried, or UnknownSize if the size is not known.
// are exactly equal. If size is greater than zero, but small, the two pointers // Pointers that point to two completely different objects in memory never
// alias if the areas pointed to overlap. If the size is very large (ie, ~0U), // alias, regardless of the value of the Size component.
// 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.
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
@ -89,6 +86,9 @@ public:
/// if (AA.alias(P1, P2)) { ... } /// if (AA.alias(P1, P2)) { ... }
/// to check to see if two pointers might alias. /// 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 }; enum AliasResult { NoAlias = 0, MayAlias = 1, MustAlias = 2 };
/// alias - The main low level interface to the alias analysis implementation. /// alias - The main low level interface to the alias analysis implementation.