public final void emitB (int relative_address) { relative_address -= mIP; if (VM.VerifyAssertions) VM._assert(relative_address < 0);
public final void emitB (int relative_address, int label) { if (relative_address == 0) { reserveForwardBranch(label); } else { relative_address -= mIP; }
  public final void emitB (int relative_address) {    relative_address -= mIP;    if (VM.VerifyAssertions) VM._assert(relative_address < 0);    _emitB(relative_address);  }