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.
2.9 SiLU（Swish）
，这一点在Line官方版本下载中也有详细论述
The number of Neets who were seeking work rose by 12.3% from the previous quarter, while the number of those not actively looking for a job fell 6%.
對此，特朗普在上週五下午匆忙召開的記者會上，猛烈抨擊那些反對他的大法官。他表示，自己對三位投下反對票的保守派大法官感到「羞恥」，並稱三位自由派大法官是「恥辱」。