bpu: improve CGE of bpu/predictors_io_update_*

[Lawrence-ID]

No description provided.

[XiangShanRobot]

[Generated by IPC robot]
commit: b4ff294

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
b4ff294	1.855	0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751	2.418	3.212

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
8b2f7ab	1.865	0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751	2.418	3.212
dd286b6		0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751		3.212
e6f36bc		0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751	2.418	3.212
3088616	1.855	0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751	2.418	3.212
497660c	1.855	0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751	2.418	3.212
65e844f	1.865	0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751	2.418	3.212
0d7009b	1.855	0.460	2.695	1.186	2.822	2.490	2.401	0.919	1.379	1.454	3.362	2.751	2.418	3.212

[eastonman]

succesor #3579