ARM: permit "sp" in ARM variants of MOVW/MOVT instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179847 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
index 9c81ece..631168b 100644
--- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
+++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
@@ -1998,9 +1998,10 @@
   imm |= (fieldFromInstruction(Insn, 16, 4) << 12);
 
   if (Inst.getOpcode() == ARM::MOVTi16)
-    if (!Check(S, DecoderGPRRegisterClass(Inst, Rd, Address, Decoder)))
+    if (!Check(S, DecodeGPRnopcRegisterClass(Inst, Rd, Address, Decoder)))
       return MCDisassembler::Fail;
-  if (!Check(S, DecoderGPRRegisterClass(Inst, Rd, Address, Decoder)))
+
+  if (!Check(S, DecodeGPRnopcRegisterClass(Inst, Rd, Address, Decoder)))
     return MCDisassembler::Fail;
 
   if (!tryAddingSymbolicOperand(Address, imm, false, 4, Inst, Decoder))