if (VM.VerifyAssertions) VM.assert(fits(relative_address,24));
if (VM.VerifyAssertions) VM._assert(fits(relative_address,24));
  private final void _emitB (int relative_address) {    if (VM.VerifyAssertions) VM.assert(fits(relative_address,24));    INSTRUCTION mi = Btemplate | (relative_address&0xFFFFFF)<<2;    if (VM.TraceAssembler)      asm(mIP, mi, "b", signedHex(relative_address<<2));    mIP++;    mc.addInstruction(mi);  }