Fix the index calculations for the extractvalue lowering code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52517 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 85a42d4..a2e0a06 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -2739,8 +2739,8 @@
   // Copy out the selected value(s).
   for (unsigned i = LinearIndex; i != LinearIndex + NumValValues; ++i)
     Values[i - LinearIndex] =
-      OutOfUndef ? DAG.getNode(ISD::UNDEF, Agg.Val->getValueType(i)) :
-                   SDOperand(Agg.Val, Agg.ResNo + i - LinearIndex);
+      OutOfUndef ? DAG.getNode(ISD::UNDEF, Agg.Val->getValueType(Agg.ResNo + i)) :
+                   SDOperand(Agg.Val, Agg.ResNo + i);
 
   setValue(&I, DAG.getNode(ISD::MERGE_VALUES,
                            DAG.getVTList(&ValValueVTs[0], NumValValues),