EMIT(MIR_Move.mutate(s, PPC_MOVE, def, R(srcHigh)));
  protected final void LONG_2INT(OPT_Instruction s,                                  OPT_RegisterOperand def,                                  OPT_RegisterOperand left) {    OPT_Register srcHigh = left.register;    OPT_Register srcLow = regpool.getSecondReg(srcHigh);    EMIT(MIR_Move.mutate(s, PPC_MOVE, def, R(srcLow)));  }