isl_union_pw_*_intersect_domain: special case parameter domains
isl_union_pw_*_intersect_domain: special case parameter domains

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

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