case      LOS_SPACE:
  public final VM_Address alloc(int bytes, boolean isScalar, int allocator)    throws VM_PragmaInline {    switch (allocator) {    case  DEFAULT_SPACE:  return def.alloc(isScalar, bytes);    case IMMORTAL_SPACE:  return immortal.alloc(isScalar, bytes);    default:      if (VM_Interface.VerifyAssertions) 	VM_Interface.sysFail("No such allocator");       return VM_Address.zero();    }  }