isl_tab_min: use general rollback mechanism
isl_tab_min: use general rollback mechanism

abduld/isl,tobig/isl,cfx-next/toolchain_isl-upstream,Distrotech/isl,cfx-next/toolchain_isl-upstream,evaautomation/isl,evaautomation/isl,epowers/isl,abduld/isl,crossbuild/isl,BobSaget-Mod/libisl,Distrotech/isl,Meinersbur/isl,serge-sans-paille/isl,pierrotdelalune/isl,simbuerg/isl,serge-sans-paille/isl,VanirLLVM/toolchain_isl,PollyLabs/isl,inducer/isl-mirror,epowers/isl,abduld/isl,UBERTC/isl,nicolasvasilache/isl,VanirLLVM/toolchain_isl,Distrotech/isl,jleben/isl,BenzoSM/isl,tobig/isl,BenzoSM/isl,BobSaget-Mod/libisl,epowers/isl,BobSaget-Mod/libisl,cfx-next/toolchain_isl-upstream,KangDroidSMProject/ISL,SaberMod/isl-current,simbuerg/isl,cfx-next/toolchain_isl-upstream,serge-sans-paille/isl,SaberMod/isl-current,evaautomation/isl,jleben/isl,VanirLLVM/toolchain_isl,KangDroidSMProject/ISL,nicolasvasilache/isl,Meinersbur/isl,pierrotdelalune/isl,PollyLabs/isl,cfx-next/toolchain_isl-upstream,serge-sans-paille/isl,crossbuild/isl,PollyLabs/isl,Distrotech/isl,Meinersbur/isl,nicolasvasilache/isl,pierrotdelalune/isl,nicolasvasilache/isl,BobSaget-Mod/libisl,VanirLLVM/toolchain_isl,Distrotech/isl,Meinersbur/isl,KangDroidSMProject/ISL,simbuerg/isl,abduld/isl,BenzoSM/isl,tobig/isl,jleben/isl,inducer/isl-mirror,tobig/isl,serge-sans-paille/isl,jleben/isl,UBERTC/isl,epowers/isl,inducer/isl-mirror,KangDroidSMProject/ISL,BenzoSM/isl,BobSaget-Mod/libisl,pierrotdelalune/isl,evaautomation/isl,BenzoSM/isl,crossbuild/isl,nicolasvasilache/isl,PollyLabs/isl,pierrotdelalune/isl,jleben/isl,PollyLabs/isl,UBERTC/isl,VanirLLVM/toolchain_isl,SaberMod/isl-current,KangDroidSMProject/ISL,inducer/isl-mirror,SaberMod/isl-current,crossbuild/isl,simbuerg/isl,epowers/isl,simbuerg/isl,UBERTC/isl,inducer/isl-mirror