diff options
Diffstat (limited to 'include/llvm/Analysis/AliasAnalysis.h')
| -rw-r--r-- | include/llvm/Analysis/AliasAnalysis.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/llvm/Analysis/AliasAnalysis.h b/include/llvm/Analysis/AliasAnalysis.h index e0068dc7b2..ef3a38a69e 100644 --- a/include/llvm/Analysis/AliasAnalysis.h +++ b/include/llvm/Analysis/AliasAnalysis.h @@ -64,6 +64,11 @@ public: AliasAnalysis() : TD(0), AA(0) {} virtual ~AliasAnalysis(); // We want to be subclassed + /// UnknownSize - This is a special value which can be used with the + /// size arguments in alias queries to indicate that the caller does not + /// know the sizes of the potential memory references. + static unsigned const UnknownSize = ~0u; + /// getTargetData - Return a pointer to the current TargetData object, or /// null if no TargetData object is available. /// @@ -96,7 +101,7 @@ public: /// alias - A convenience wrapper for the case where the sizes are unknown. AliasResult alias(const Value *V1, const Value *V2) { - return alias(V1, ~0u, V2, ~0u); + return alias(V1, UnknownSize, V2, UnknownSize); } /// isNoAlias - A trivial helper function to check to see if the specified |