Remove the bitwise XOR operator from the Attributes class. Replace it with the equivalent from the builder class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165893 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index 4d31444..665d5b0 100644
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -774,8 +774,10 @@
     // Conservatively require the attributes of the call to match those of the
     // return. Ignore noalias because it doesn't affect the call sequence.
     Attributes CalleeRetAttr = CS.getAttributes().getRetAttributes();
-    if (Attributes::Builder(CalleeRetAttr ^ CallerRetAttr)
-        .removeAttribute(Attributes::NoAlias).hasAttributes())
+    if (Attributes::Builder(CalleeRetAttr).
+          removeAttribute(Attributes::NoAlias) !=
+        Attributes::Builder(CallerRetAttr).
+          removeAttribute(Attributes::NoAlias))
       continue;
 
     // Make sure the call instruction is followed by an unconditional branch to