Add a new node type, add comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19525 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/CodeGen/SelectionDAGISel.h b/include/llvm/CodeGen/SelectionDAGISel.h
index 5fc6f31..77fd05a 100644
--- a/include/llvm/CodeGen/SelectionDAGISel.h
+++ b/include/llvm/CodeGen/SelectionDAGISel.h
@@ -21,6 +21,7 @@
 namespace llvm {
   class SelectionDAG;
   class SelectionDAGLowering;
+  class SDOperand;
   class SSARegMap;
   class MachineBasicBlock;
   class MachineFunction;
@@ -49,8 +50,8 @@
 
   virtual void InstructionSelectBasicBlock(SelectionDAG &SD) = 0;
   
-  void CopyValueToVirtualRegister(SelectionDAGLowering &SDL,
-                                  Value *V, unsigned Reg);
+  SDOperand CopyValueToVirtualRegister(SelectionDAGLowering &SDL,
+                                       Value *V, unsigned Reg);
   void SelectBasicBlock(BasicBlock *BB, MachineFunction &MF,
                         FunctionLoweringInfo &FuncInfo);