Fix side effects test to have a dependence on all results from extern call
Fix side effects test to have a dependence on all results from extern call

Otherwise llvm is clever and only does the last one.

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