Add more plumbing. This time in the LowerArguments and "get" functions which
return partial registers. This affected the back-end lowering code some.

Also patch up some places I missed before in the "get" functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91880 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index b653c96..c9c5f4f 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -336,6 +336,8 @@
   DebugLoc getCurDebugLoc() const { return CurDebugLoc; }
   void setCurDebugLoc(DebugLoc dl) { CurDebugLoc = dl; }
 
+  unsigned getSDNodeOrder() const { return SDNodeOrder; }
+
   void CopyValueToVirtualRegister(Value *V, unsigned Reg);
 
   void visit(Instruction &I);