AddressDequeue src = cycleBufferB;
AddressDeque src = cycleBufferB;
  private final void doCollectPhase() {    VM_Address object;    AddressDequeue src = cycleBufferB;    phase = COLLECT;    while (!(object = src.pop()).isZero()) {      if (VM_Interface.VerifyAssertions)	VM_Interface._assert(!RCBaseHeader.isGreen(object));      RCBaseHeader.clearBufferedBit(object);      collectWhite(object);    }  }