diff --git a/llvm/lib/Target/ARC/ARCRegisterInfo.h b/llvm/lib/Target/ARC/ARCRegisterInfo.h
--- a/llvm/lib/Target/ARC/ARCRegisterInfo.h
+++ b/llvm/lib/Target/ARC/ARCRegisterInfo.h
@@ -39,6 +39,8 @@
 
   bool useFPForScavengingIndex(const MachineFunction &MF) const override;
 
+  bool supportsBackwardScavenger() const override { return true; }
+
   bool eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
                            unsigned FIOperandNum,
                            RegScavenger *RS = nullptr) const override;