diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td
index 6335229d3c2..081c0abd6bd 100644
--- a/lib/Target/ARM/ARMInstrThumb.td
+++ b/lib/Target/ARM/ARMInstrThumb.td
@@ -363,8 +363,8 @@ def : tInstAlias<"sub${p} sp, sp, $imm",
                  (tSUBspi SP, t_imm0_508s4:$imm, pred:$p)>;
 
 // ADD <Rm>, sp
-def tADDrSP : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPRsp:$sp), IIC_iALUr,
-                  "add", "\t$Rdn, $sp, $Rn", []>,
+def tADDrSP : T1pIt<(outs GPR:$Rdn), (ins GPRsp:$sp, GPR:$Rn), IIC_iALUr,
+                    "add", "\t$Rdn, $sp, $Rn", []>,
               T1Special<{0,0,?,?}> {
   // A8.6.9 Encoding T1
   bits<4> Rdn;
diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
index 49260bbbf28..4c96c1acc97 100644
--- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
+++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
@@ -3296,9 +3296,9 @@ static DecodeStatus DecodeThumbAddSPReg(MCInst &Inst, uint16_t Insn,
 
     if (!Check(S, DecodeGPRRegisterClass(Inst, Rdm, Address, Decoder)))
     return MCDisassembler::Fail;
+    Inst.addOperand(MCOperand::CreateReg(ARM::SP));
     if (!Check(S, DecodeGPRRegisterClass(Inst, Rdm, Address, Decoder)))
     return MCDisassembler::Fail;
-    Inst.addOperand(MCOperand::CreateReg(ARM::SP));
   } else if (Inst.getOpcode() == ARM::tADDspr) {
     unsigned Rm = fieldFromInstruction16(Insn, 3, 4);