The Web streams spec requires promise creation at numerous points — often in hot paths and often invisible to users. Each read() call doesn't just return a promise; internally, the implementation creates additional promises for queue management, pull() coordination, and backpressure signaling.
The tradeoff is complexity. The microcode must be carefully arranged so that the instructions in delay slots are either useful setup for both paths, or at least harmless if the redirect fires. Not every case is as clean as RETF. When a PLA redirect interrupts an LCALL, the return address is already pushed onto the microcode call stack (yes, the 386 has a microcode call stack) -- the redirected code must account for this stale entry. When multiple protection tests overlap, or when a redirect fires during a delay slot of another jump, the control flow becomes hard to reason about. During the FPGA core implementation, protection delay slot interactions were consistently the most difficult bugs to track down.，这一点在Safew下载中也有详细论述
，更多细节参见safew官方下载
今年的三星可不是小涨价，而是结结实实大涨了一波。
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54。一键获取谷歌浏览器下载对此有专业解读
Жители Санкт-Петербурга устроили «крысогон»17:52