Revert 279703, it caused PR31404.

llvm-svn: 289923
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.h b/llvm/lib/Target/ARM/ARMISelLowering.h
index 7978f76..75da358 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.h
+++ b/llvm/lib/Target/ARM/ARMISelLowering.h
@@ -190,8 +190,7 @@
       MEMCPY,
 
       // Vector load N-element structure to all lanes:
-      VLD1DUP = ISD::FIRST_TARGET_MEMORY_OPCODE,
-      VLD2DUP,
+      VLD2DUP = ISD::FIRST_TARGET_MEMORY_OPCODE,
       VLD3DUP,
       VLD4DUP,
 
@@ -203,7 +202,6 @@
       VLD2LN_UPD,
       VLD3LN_UPD,
       VLD4LN_UPD,
-      VLD1DUP_UPD,
       VLD2DUP_UPD,
       VLD3DUP_UPD,
       VLD4DUP_UPD,