feat(difftest): add 'pc' and 'robidx' for store event

[Anzooooo]

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[XiangShanRobot]

[Generated by IPC robot]
commit: c2b47ba

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
c2b47ba	1.917	0.450	2.701	1.241	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
393755c
e7ab463			2.701					0.915	1.429
4376b52	1.917	0.450	2.701	1.233	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280
68838bf	1.920	0.450	2.701	1.234	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280
8e8c863	1.937	0.450	2.701	1.248	2.891	2.460	2.400	0.919	1.431	1.685	3.488	2.736	2.418	3.290

[XiangShanRobot]

[Generated by IPC robot]
commit: 4c96dbc

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
4c96dbc	1.920	0.450	2.701	1.232	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
4e7f257	1.917			1.237	2.891	2.473		0.915		1.700	3.470		2.417	3.280
393755c	1.917	0.450	2.701	1.239	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280
e7ab463	1.917	0.450	2.701	1.229	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280
4376b52
68838bf	1.920	0.450	2.701	1.234	2.891	2.473	2.398	0.915	1.429	1.700	3.470	2.729	2.417	3.280