Revert "Revert "[LTO] Build lld on Windows CI""
Revert "Revert "[LTO] Build lld on Windows CI""

This reverts commit 8c9649eb95751ba5f3cede15976b9c60e034eed3.

xwu/swift,atrick/swift,jckarter/swift,airspeedswift/swift,roambotics/swift,parkera/swift,stephentyrone/swift,hooman/swift,gregomni/swift,parkera/swift,benlangmuir/swift,stephentyrone/swift,benlangmuir/swift,glessard/swift,atrick/swift,jckarter/swift,airspeedswift/swift,nathawes/swift,atrick/swift,CodaFi/swift,airspeedswift/swift,allevato/swift,rudkx/swift,jckarter/swift,rudkx/swift,allevato/swift,rudkx/swift,roambotics/swift,CodaFi/swift,ahoppen/swift,nathawes/swift,CodaFi/swift,stephentyrone/swift,airspeedswift/swift,jmgc/swift,parkera/swift,parkera/swift,glessard/swift,roambotics/swift,tkremenek/swift,jmgc/swift,glessard/swift,CodaFi/swift,atrick/swift,tkremenek/swift,ahoppen/swift,xwu/swift,apple/swift,parkera/swift,xwu/swift,rudkx/swift,ahoppen/swift,benlangmuir/swift,tkremenek/swift,ahoppen/swift,JGiola/swift,nathawes/swift,allevato/swift,gregomni/swift,hooman/swift,gregomni/swift,benlangmuir/swift,JGiola/swift,benlangmuir/swift,hooman/swift,glessard/swift,rudkx/swift,xwu/swift,hooman/swift,CodaFi/swift,jmgc/swift,allevato/swift,JGiola/swift,jckarter/swift,parkera/swift,nathawes/swift,allevato/swift,jckarter/swift,hooman/swift,JGiola/swift,stephentyrone/swift,roambotics/swift,tkremenek/swift,atrick/swift,JGiola/swift,airspeedswift/swift,jmgc/swift,allevato/swift,stephentyrone/swift,jckarter/swift,tkremenek/swift,rudkx/swift,benlangmuir/swift,glessard/swift,JGiola/swift,hooman/swift,ahoppen/swift,nathawes/swift,jmgc/swift,apple/swift,CodaFi/swift,ahoppen/swift,xwu/swift,CodaFi/swift,apple/swift,apple/swift,roambotics/swift,nathawes/swift,gregomni/swift,atrick/swift,tkremenek/swift,nathawes/swift,gregomni/swift,allevato/swift,airspeedswift/swift,glessard/swift,jckarter/swift,roambotics/swift,parkera/swift,tkremenek/swift,stephentyrone/swift,stephentyrone/swift,parkera/swift,xwu/swift,hooman/swift,xwu/swift,gregomni/swift,jmgc/swift,jmgc/swift,apple/swift,airspeedswift/swift,apple/swift