EMIT(MIR_Binary.create(PPC_NOR, L(defReg), L(leftReg), L(leftReg)));
  protected final void LONG_NOT(OPT_Instruction s,                                 OPT_RegisterOperand def,                                 OPT_RegisterOperand left) {    OPT_Register defReg = def.register;    OPT_Register leftReg = left.register;    EMIT(MIR_Binary.create(PPC_NOR, R(defReg), R(leftReg), R(leftReg)));    EMIT(MIR_Binary.create(PPC_NOR,                            R(regpool.getSecondReg(defReg)),                            R(regpool.getSecondReg(leftReg)),                            R(regpool.getSecondReg(leftReg))));  }