Use method to query for attributes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165209 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index 305d70f..a2427cf 100644
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -714,7 +714,7 @@
   // See llvm::isInTailCallPosition().
   const Function *F = BB->getParent();
   Attributes CallerRetAttr = F->getAttributes().getRetAttributes();
-  if ((CallerRetAttr & Attribute::ZExt) || (CallerRetAttr & Attribute::SExt))
+  if (CallerRetAttr.hasZExtAttr() || CallerRetAttr.hasSExtAttr())
     return false;
 
   // Make sure there are no instructions between the PHI and return, or that the