Remove unused parameter. Also use the AttributeSet query methods instead of the Attribute query methods.

llvm-svn: 172852
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 4e07fd3..cf74860 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5277,8 +5277,7 @@
 
   // Check if target-independent constraints permit a tail call here.
   // Target-dependent constraints are checked within TLI.LowerCallTo.
-  if (isTailCall &&
-      !isInTailCallPosition(CS, CS.getAttributes().getRetAttributes(), TLI))
+  if (isTailCall && !isInTailCallPosition(CS, TLI))
     isTailCall = false;
 
   TargetLowering::