Avoid generating vshiftn for newer llvms
Avoid generating vshiftn for newer llvms

mcanthony/Halide,rodrigob/Halide,dan-tull/Halide,damienfir/Halide,lglucin/Halide,delcypher/Halide,myrtleTree33/Halide,damienfir/Halide,delcypher/Halide,myrtleTree33/Halide,ayanazmat/Halide,aam/Halide,damienfir/Halide,ronen/Halide,adasworks/Halide,dougkwan/Halide,kenkuang1213/Halide,mcanthony/Halide,lglucin/Halide,kenkuang1213/Halide,lglucin/Halide,tdenniston/Halide,damienfir/Halide,myrtleTree33/Halide,fengzhyuan/Halide,ayanazmat/Halide,fengzhyuan/Halide,mcanthony/Halide,psuriana/Halide,kenkuang1213/Halide,psuriana/Halide,dougkwan/Halide,adasworks/Halide,gchauras/Halide,tdenniston/Halide,myrtleTree33/Halide,ronen/Halide,mcanthony/Halide,jiawen/Halide,smxlong/Halide,kgnk/Halide,kenkuang1213/Halide,dan-tull/Halide,gchauras/Halide,jiawen/Halide,tdenniston/Halide,kenkuang1213/Halide,dougkwan/Halide,lglucin/Halide,myrtleTree33/Halide,fengzhyuan/Halide,dan-tull/Halide,rodrigob/Halide,ronen/Halide,ayanazmat/Halide,adasworks/Halide,mcanthony/Halide,aam/Halide,dan-tull/Halide,adasworks/Halide,delcypher/Halide,fengzhyuan/Halide,ayanazmat/Halide,smxlong/Halide,mcanthony/Halide,smxlong/Halide,lglucin/Halide,dougkwan/Halide,delcypher/Halide,kenkuang1213/Halide,gchauras/Halide,myrtleTree33/Halide,rodrigob/Halide,jiawen/Halide,fengzhyuan/Halide,kenkuang1213/Halide,rodrigob/Halide,gchauras/Halide,rodrigob/Halide,tdenniston/Halide,damienfir/Halide,gchauras/Halide,myrtleTree33/Halide,psuriana/Halide,mcanthony/Halide,kgnk/Halide,aam/Halide,ayanazmat/Halide,kgnk/Halide,tdenniston/Halide,gchauras/Halide,lglucin/Halide,adasworks/Halide,ayanazmat/Halide,psuriana/Halide,fengzhyuan/Halide,rodrigob/Halide,kgnk/Halide,psuriana/Halide,dougkwan/Halide,adasworks/Halide,jiawen/Halide,dan-tull/Halide,ronen/Halide,kenkuang1213/Halide,damienfir/Halide,dan-tull/Halide,jiawen/Halide,jiawen/Halide,aam/Halide,dougkwan/Halide,fengzhyuan/Halide,adasworks/Halide,ronen/Halide,kgnk/Halide,dan-tull/Halide,dougkwan/Halide,rodrigob/Halide,smxlong/Halide,delcypher/Halide,aam/Halide,mcanthony/Halide,kgnk/Halide,kgnk/Halide,delcypher/Halide,aam/Halide,ronen/Halide,damienfir/Halide,psuriana/Halide,jiawen/Halide,tdenniston/Halide,dan-tull/Halide,delcypher/Halide,myrtleTree33/Halide,ayanazmat/Halide,adasworks/Halide,tdenniston/Halide,smxlong/Halide,delcypher/Halide,fengzhyuan/Halide,tdenniston/Halide,smxlong/Halide,ayanazmat/Halide,psuriana/Halide,rodrigob/Halide,ronen/Halide,aam/Halide,damienfir/Halide,smxlong/Halide,dougkwan/Halide,smxlong/Halide,kgnk/Halide,lglucin/Halide,ronen/Halide