Add support for functions with byval arguments on x86


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41953 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h
index 41eaec2..7dfc058 100644
--- a/lib/Target/X86/X86ISelLowering.h
+++ b/lib/Target/X86/X86ISelLowering.h
@@ -380,6 +380,10 @@
                             unsigned CallingConv, SelectionDAG &DAG);
         
 
+    SDOperand LowerMemArgument(SDOperand Op, SelectionDAG &DAG,
+                               const CCValAssign &VA,  MachineFrameInfo *MFI,
+                               SDOperand Root, unsigned i);
+
     SDOperand LowerMemOpCallTo(SDOperand Op, SelectionDAG &DAG,
                                const SDOperand &StackPtr,
                                const CCValAssign &VA, SDOperand Chain,