Index: lib/Target/ARM/ARMBaseInstrInfo.h
===================================================================
--- lib/Target/ARM/ARMBaseInstrInfo.h
+++ lib/Target/ARM/ARMBaseInstrInfo.h
@@ -104,6 +104,8 @@
     getNoopForMachoTarget(NopInst);
   }
 
+  bool isTailCall(const MachineInstr &Inst) const override;
+
   // Return the non-pre/post incrementing version of 'Opc'. Return 0
   // if there is not such an opcode.
   virtual unsigned getUnindexedOpcode(unsigned Opc) const =0;
Index: lib/Target/ARM/ARMBaseInstrInfo.cpp
===================================================================
--- lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -4623,6 +4623,19 @@
   return Subtarget.getFeatureBits()[ARM::HasV6KOps];
 }
 
+bool ARMBaseInstrInfo::isTailCall(const MachineInstr &Inst) const
+{
+  switch (Inst.getOpcode()) {
+  case ARM::TAILJMPd:
+  case ARM::TAILJMPr:
+  case ARM::TCRETURNdi:
+  case ARM::TCRETURNri:
+    return true;
+  default:
+    return false;
+  }
+}
+
 bool ARMBaseInstrInfo::isSwiftFastImmShift(const MachineInstr *MI) const {
   if (MI->getNumOperands() < 4)
     return true;