diff --git a/llvm/lib/Analysis/MemoryBuiltins.cpp b/llvm/lib/Analysis/MemoryBuiltins.cpp
index e93021b..686ad29 100644
--- a/llvm/lib/Analysis/MemoryBuiltins.cpp
+++ b/llvm/lib/Analysis/MemoryBuiltins.cpp
@@ -150,7 +150,7 @@
     return None;
 
   const AllocFnsTy *FnData = &Iter->second;
-  if ((FnData->AllocTy & AllocTy) == 0)
+  if ((FnData->AllocTy & AllocTy) != FnData->AllocTy)
     return None;
 
   // Check function prototype.