Add DW_OP_bit_piece.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129945 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Dwarf.cpp b/lib/Support/Dwarf.cpp
index 25cf531..74a9fda 100644
--- a/lib/Support/Dwarf.cpp
+++ b/lib/Support/Dwarf.cpp
@@ -395,6 +395,7 @@
   case DW_OP_call_ref:                   return "DW_OP_call_ref";
   case DW_OP_form_tls_address:           return "DW_OP_form_tls_address";
   case DW_OP_call_frame_cfa:             return "DW_OP_call_frame_cfa";
+  case DW_OP_bit_piece:                  return "DW_OP_bit_piece";
   case DW_OP_lo_user:                    return "DW_OP_lo_user";
   case DW_OP_hi_user:                    return "DW_OP_hi_user";
   }