isl_union_map_alloc: project space argument onto its parameters
isl_union_map_alloc: project space argument onto its parameters

We are only interested in the parameters anyway, so we might as well
project out all the other dimensions.

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

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