Add selection DAG nodes for subreg insert/extract. PR1350


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40516 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 9b146ee..d4d984b 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3455,7 +3455,10 @@
   case ISD::SHL_PARTS:   return "shl_parts";
   case ISD::SRA_PARTS:   return "sra_parts";
   case ISD::SRL_PARTS:   return "srl_parts";
-
+  
+  case ISD::EXTRACT_SUBREG:     return "extract_subreg";
+  case ISD::INSERT_SUBREG:      return "insert_subreg";
+  
   // Conversion operators.
   case ISD::SIGN_EXTEND: return "sign_extend";
   case ISD::ZERO_EXTEND: return "zero_extend";