[ModRefInfo] Replace remaining bit-wise operations with wrappers.

llvm-svn: 319993
diff --git a/llvm/lib/Analysis/BasicAliasAnalysis.cpp b/llvm/lib/Analysis/BasicAliasAnalysis.cpp
index b40f24a..5522803 100644
--- a/llvm/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/BasicAliasAnalysis.cpp
@@ -823,7 +823,7 @@
     }
 
     // Early return if we improved mod ref information
-    if (Result != MRI_ModRef)
+    if (!isModAndRefSet(Result))
       return Result;
   }