diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index 05dfa552d1e..901a4ab7edd 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -716,6 +716,13 @@ void ARMAsmPrinter::PrintDebugValueComment(const MachineInstr *MI,
 void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
   switch (MI->getOpcode()) {
   default: break;
+  case ARM::t2ADDrSPi:
+  case ARM::t2ADDrSPi12:
+  case ARM::t2SUBrSPi:
+  case ARM::t2SUBrSPi12:
+    assert (MI->getOperand(1).getReg() == ARM::SP);
+    break;
+
   case ARM::t2MOVi32imm: assert(0 && "Should be lowered by thumb2it pass");
   case ARM::DBG_VALUE: {
     if (isVerbose() && OutStreamer.hasRawTextSupport()) {