优化目标:14行76步
跟15行79步类似,15行的问题是 COPYFROM 11
执行了两次,为了省去最后一步的 COPYFROM 14 COPYTO 1
,导致 INBOX取的数先存后取,且还是在循环内取,因此多执行了几步。
JUMP next out: ADD 15 OUTBOX COPYFROM 1 OUTBOX next: COPYFROM 14 COPYTO 1 INBOX cal: SUB 15 JUMPN out COPYTO 0 BUMPUP 1 COPYFROM 0 JUMP cal
JUMP next out: ADD 15 OUTBOX COPYFROM 1 OUTBOX next: INBOX COPYTO 11 COPYFROM 14 COPYTO 1 cal: COPYFROM 11 SUB 15 JUMPN out COPYTO 11 BUMPUP 1 JUMP cal
COPYFROM 15 ADD 15 COPYTO 11 ADD 15 COPYTO 7 JUMP next out: OUTBOX next: COPYFROM 14 COPYTO 0 INBOX SUB 15 JUMPN y0 ADD 15 SUB 11 JUMPN y1 ADD 11 SUB 7 JUMPN y2 OUTBOX BUMPUP 0 BUMPUP 0 BUMPUP 0 JUMP out y0: ADD 15 OUTBOX COPYFROM 0 JUMP out y1: ADD 11 SUB 15 OUTBOX BUMPUP 0 JUMP out y2: ADD 7 SUB 11 OUTBOX BUMPUP 0 BUMPUP 0 JUMP out
next: COPYFROM 14 COPYTO 1 INBOX COPYTO 11 cal: COPYFROM 11 SUB 15 JUMPN x COPYTO 11 BUMPUP 1 JUMP cal x: ADD 15 OUTBOX COPYFROM 1 OUTBOX JUMP next