diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index 6d7c93f3e65..5e652269149 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -102,6 +102,7 @@ namespace {
     void printThumbAddrModeS4Operand(const MachineInstr *MI, int OpNo);
     void printThumbAddrModeSPOperand(const MachineInstr *MI, int OpNo);
     void printPredicateOperand(const MachineInstr *MI, int opNum);
+    void printSBitModifierOperand(const MachineInstr *MI, int opNum);
     void printPCLabel(const MachineInstr *MI, int opNum);
     void printRegisterList(const MachineInstr *MI, int opNum);
     void printCPInstOperand(const MachineInstr *MI, int opNum,
@@ -621,6 +622,14 @@ void ARMAsmPrinter::printPredicateOperand(const MachineInstr *MI, int opNum) {
     O << ARMCondCodeToString(CC);
 }
 
+void ARMAsmPrinter::printSBitModifierOperand(const MachineInstr *MI, int opNum){
+  unsigned Reg = MI->getOperand(opNum).getReg();
+  if (Reg) {
+    assert(Reg == ARM::CPSR && "Expect ARM CPSR register!");
+    O << 's';
+  }
+}
+
 void ARMAsmPrinter::printPCLabel(const MachineInstr *MI, int opNum) {
   int Id = (int)MI->getOperand(opNum).getImmedValue();
   O << TAI->getPrivateGlobalPrefix() << "PC" << Id;