Fixed a bug with how we determine bitset indices.

llvm-svn: 226671
diff --git a/llvm/lib/Analysis/CFLAliasAnalysis.cpp b/llvm/lib/Analysis/CFLAliasAnalysis.cpp
index 88bb84a..9783671 100644
--- a/llvm/lib/Analysis/CFLAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/CFLAliasAnalysis.cpp
@@ -774,7 +774,7 @@
 }
 
 static StratifiedAttr argNumberToAttrIndex(unsigned ArgNum) {
-  if (ArgNum > AttrMaxNumArgs)
+  if (ArgNum >= AttrMaxNumArgs)
     return AttrAllIndex;
   return ArgNum + AttrFirstArgIndex;
 }