static bool isSimilarDispOp(const MachineOperand &MO1,
                            const MachineOperand &MO2) {
  assert(isValidDispOp(MO1) && isValidDispOp(MO2) &&
         "Address displacement operand is not valid");
  return (MO1.isImm() && MO2.isImm()) ||
         (MO1.isCPI() && MO2.isCPI() && MO1.getIndex() == MO2.getIndex()) ||
         (MO1.isJTI() && MO2.isJTI() && MO1.getIndex() == MO2.getIndex()) ||
         (MO1.isSymbol() && MO2.isSymbol() &&
          MO1.getSymbolName() == MO2.getSymbolName()) ||
         (MO1.isGlobal() && MO2.isGlobal() &&
          MO1.getGlobal() == MO2.getGlobal()) ||
         (MO1.isBlockAddress() && MO2.isBlockAddress() &&
          MO1.getBlockAddress() == MO2.getBlockAddress()) ||
         (MO1.isMCSymbol() && MO2.isMCSymbol() &&
          MO1.getMCSymbol() == MO2.getMCSymbol()) ||
         (MO1.isMBB() && MO2.isMBB() && MO1.getMBB() == MO2.getMBB());
}
static bool isValidDispOp(const MachineOperand &MO) {
  return MO.isImm() || MO.isCPI() || MO.isJTI() || MO.isSymbol() ||
         MO.isGlobal() || MO.isBlockAddress() || MO.isMCSymbol() || MO.isMBB();
}