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| author | Dan Gohman <gohman@apple.com> | 2010-08-03 01:03:11 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-08-03 01:03:11 +0000 |
| commit | ef1cfac9e50def9097cd3e3ab3c5cad7f4c758cc (patch) | |
| tree | a325ebdd4287c7436ad9a41faddda9f65d411b91 /include/llvm/Analysis | |
| parent | 847a84efd23a2c7d90429b82f6e0f19d1f913d9a (diff) | |
| download | external_llvm-ef1cfac9e50def9097cd3e3ab3c5cad7f4c758cc.zip external_llvm-ef1cfac9e50def9097cd3e3ab3c5cad7f4c758cc.tar.gz external_llvm-ef1cfac9e50def9097cd3e3ab3c5cad7f4c758cc.tar.bz2 | |
Introduce a symbolic constant for ~0u for use with AliasAnalysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110091 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Analysis')
| -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 e0068dc..ef3a38a 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 |