isl_basic_map_preimage_multi_aff: check if parameters of inputs match
isl_basic_map_preimage_multi_aff: check if parameters of inputs match

We currently assume that they do, but fail to check this condition.

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

tobig/isl,nicolasvasilache/isl,SaberMod/isl-current,jleben/isl,KangDroidSMProject/ISL,PollyLabs/isl,crossbuild/isl,Distrotech/isl,Distrotech/isl,nicolasvasilache/isl,PollyLabs/isl,nicolasvasilache/isl,inducer/isl-mirror,KangDroidSMProject/ISL,KangDroidSMProject/ISL,evaautomation/isl,SaberMod/isl-current,simbuerg/isl,tobig/isl,PollyLabs/isl,UBERTC/isl,inducer/isl-mirror,abduld/isl,Meinersbur/isl,abduld/isl,evaautomation/isl,BenzoSM/isl,jleben/isl,crossbuild/isl,BenzoSM/isl,abduld/isl,tobig/isl,Distrotech/isl,jleben/isl,nicolasvasilache/isl,simbuerg/isl,Meinersbur/isl,jleben/isl,inducer/isl-mirror,abduld/isl,Meinersbur/isl,PollyLabs/isl,tobig/isl,crossbuild/isl,PollyLabs/isl,crossbuild/isl,inducer/isl-mirror,evaautomation/isl,Distrotech/isl,simbuerg/isl,BenzoSM/isl,KangDroidSMProject/ISL,BenzoSM/isl,Meinersbur/isl,Distrotech/isl,nicolasvasilache/isl,simbuerg/isl,UBERTC/isl,evaautomation/isl,inducer/isl-mirror,UBERTC/isl,UBERTC/isl,KangDroidSMProject/ISL,jleben/isl,simbuerg/isl,SaberMod/isl-current,SaberMod/isl-current,BenzoSM/isl