Update comments; BasicAA is no longer necessarily the end of the chain.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117268 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AliasAnalysis.cpp b/lib/Analysis/AliasAnalysis.cpp
index 8fbd8ea..912923b 100644
--- a/lib/Analysis/AliasAnalysis.cpp
+++ b/lib/Analysis/AliasAnalysis.cpp
@@ -94,7 +94,7 @@
   if ((Mask & Mod) && pointsToConstantMemory(Loc))
     Mask = ModRefResult(Mask & ~Mod);
 
-  // If this is BasicAA, don't forward.
+  // If this is the end of the chain, don't forward.
   if (!AA) return Mask;
 
   // Otherwise, fall back to the next AA in the chain. But we can merge
@@ -152,7 +152,7 @@
       return R;
   }
 
-  // If this is BasicAA, don't forward.
+  // If this is the end of the chain, don't forward.
   if (!AA) return Mask;
 
   // Otherwise, fall back to the next AA in the chain. But we can merge
@@ -171,7 +171,7 @@
   if (const Function *F = CS.getCalledFunction())
     Min = getModRefBehavior(F);
 
-  // If this is BasicAA, don't forward.
+  // If this is the end of the chain, don't forward.
   if (!AA) return Min;
 
   // Otherwise, fall back to the next AA in the chain. But we can merge