diff options
Diffstat (limited to 'llvm/lib/Analysis/AliasAnalysis.cpp')
| -rw-r--r-- | llvm/lib/Analysis/AliasAnalysis.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/AliasAnalysis.cpp b/llvm/lib/Analysis/AliasAnalysis.cpp index 84da76be98b..fbc030b26aa 100644 --- a/llvm/lib/Analysis/AliasAnalysis.cpp +++ b/llvm/lib/Analysis/AliasAnalysis.cpp @@ -367,6 +367,14 @@ ModRefInfo AAResults::getModRefInfo(const StoreInst *S, return MRI_Mod; } +ModRefInfo AAResults::getModRefInfo(const FenceInst *S, const MemoryLocation &Loc) { + // If we know that the location is a constant memory location, the fence + // cannot modify this location. + if (Loc.Ptr && pointsToConstantMemory(Loc)) + return MRI_Ref; + return MRI_ModRef; +} + ModRefInfo AAResults::getModRefInfo(const VAArgInst *V, const MemoryLocation &Loc) { |
