fix(uopsplit): set vector instructions never use simple split type

[Ziyue-Zhang]

• when use simple split type, instruction cannot send to complex decoder and not do the exception check
• vs dirty is setted when split type is not simple

[XiangShanRobot]

[Generated by IPC robot]
commit: 841177a

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
841177a	1.899	0.450	2.701	1.219	2.833	2.461	2.395	0.921	1.426	2.022	3.432	2.707	2.368	3.227

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
d4265a7	1.899	0.450	2.701	1.219	2.833	2.461	2.395	0.921	1.426	2.022	3.432	2.707	2.368	3.227
81ed416
ad7236c	1.904			1.227	2.833	2.461		0.916		2.042	3.432		2.368	3.231
7dc438a	1.904	0.450	2.698	1.227	2.833	2.461	2.395	0.916	1.386	2.042	3.432	2.719	2.368	3.231
b867eb9	1.917	0.450	2.689	1.232	2.842	2.461	2.394	0.925	1.418	2.035	3.435	2.704	2.383	3.261