Run the devirtualizer after the generic specializer
Run the devirtualizer after the generic specializer

This is very beneficial because many class_method/witness_method instructions may get concrete types after specialization. Doing it this way improves compilation times.

glessard/swift,airspeedswift/swift,benlangmuir/swift,frootloops/swift,airspeedswift/swift,xwu/swift,hooman/swift,jckarter/swift,amraboelela/swift,glessard/swift,nathawes/swift,jmgc/swift,harlanhaskins/swift,natecook1000/swift,gribozavr/swift,tkremenek/swift,alblue/swift,zisko/swift,devincoughlin/swift,rudkx/swift,xedin/swift,allevato/swift,jckarter/swift,natecook1000/swift,xwu/swift,apple/swift,apple/swift,stephentyrone/swift,OscarSwanros/swift,atrick/swift,shajrawi/swift,stephentyrone/swift,lorentey/swift,jopamer/swift,frootloops/swift,alblue/swift,practicalswift/swift,parkera/swift,sschiau/swift,uasys/swift,tjw/swift,xedin/swift,benlangmuir/swift,tkremenek/swift,xwu/swift,frootloops/swift,gregomni/swift,CodaFi/swift,jmgc/swift,allevato/swift,apple/swift,amraboelela/swift,atrick/swift,sschiau/swift,harlanhaskins/swift,stephentyrone/swift,roambotics/swift,parkera/swift,roambotics/swift,natecook1000/swift,uasys/swift,austinzheng/swift,lorentey/swift,nathawes/swift,shahmishal/swift,shahmishal/swift,uasys/swift,austinzheng/swift,harlanhaskins/swift,natecook1000/swift,jckarter/swift,aschwaighofer/swift,brentdax/swift,brentdax/swift,gribozavr/swift,xedin/swift,roambotics/swift,tjw/swift,huonw/swift,practicalswift/swift,huonw/swift,parkera/swift,devincoughlin/swift,CodaFi/swift,brentdax/swift,practicalswift/swift,austinzheng/swift,benlangmuir/swift,amraboelela/swift,JGiola/swift,glessard/swift,jckarter/swift,frootloops/swift,karwa/swift,tjw/swift,karwa/swift,alblue/swift,gribozavr/swift,austinzheng/swift,rudkx/swift,xwu/swift,swiftix/swift,aschwaighofer/swift,sschiau/swift,gribozavr/swift,natecook1000/swift,tjw/swift,tkremenek/swift,ahoppen/swift,karwa/swift,uasys/swift,aschwaighofer/swift,devincoughlin/swift,natecook1000/swift,OscarSwanros/swift,rudkx/swift,tkremenek/swift,aschwaighofer/swift,JGiola/swift,airspeedswift/swift,swiftix/swift,danielmartin/swift,brentdax/swift,devincoughlin/swift,lorentey/swift,devincoughlin/swift,jmgc/swift,austinzheng/swift,jckarter/swift,CodaFi/swift,allevato/swift,xedin/swift,ahoppen/swift,hooman/swift,devincoughlin/swift,lorentey/swift,jopamer/swift,shahmishal/swift,jopamer/swift,JGiola/swift,xedin/swift,parkera/swift,jmgc/swift,atrick/swift,ahoppen/swift,CodaFi/swift,zisko/swift,danielmartin/swift,jopamer/swift,swiftix/swift,gribozavr/swift,nathawes/swift,xedin/swift,aschwaighofer/swift,hooman/swift,frootloops/swift,JGiola/swift,nathawes/swift,OscarSwanros/swift,CodaFi/swift,harlanhaskins/swift,xwu/swift,JGiola/swift,nathawes/swift,allevato/swift,apple/swift,frootloops/swift,shajrawi/swift,gregomni/swift,shajrawi/swift,practicalswift/swift,karwa/swift,jmgc/swift,benlangmuir/swift,uasys/swift,gregomni/swift,atrick/swift,huonw/swift,brentdax/swift,jopamer/swift,lorentey/swift,danielmartin/swift,uasys/swift,jmgc/swift,xwu/swift,amraboelela/swift,huonw/swift,jckarter/swift,gregomni/swift,xedin/swift,airspeedswift/swift,tjw/swift,sschiau/swift,sschiau/swift,rudkx/swift,karwa/swift,swiftix/swift,CodaFi/swift,amraboelela/swift,benlangmuir/swift,roambotics/swift,atrick/swift,sschiau/swift,ahoppen/swift,allevato/swift,allevato/swift,jopamer/swift,stephentyrone/swift,practicalswift/swift,rudkx/swift,parkera/swift,atrick/swift,tkremenek/swift,gregomni/swift,frootloops/swift,OscarSwanros/swift,alblue/swift,harlanhaskins/swift,tkremenek/swift,glessard/swift,hooman/swift,stephentyrone/swift,xedin/swift,parkera/swift,huonw/swift,amraboelela/swift,harlanhaskins/swift,karwa/swift,shajrawi/swift,danielmartin/swift,glessard/swift,shahmishal/swift,shajrawi/swift,apple/swift,glessard/swift,practicalswift/swift,harlanhaskins/swift,zisko/swift,danielmartin/swift,lorentey/swift,hooman/swift,karwa/swift,ahoppen/swift,apple/swift,karwa/swift,lorentey/swift,tjw/swift,parkera/swift,devincoughlin/swift,shahmishal/swift,airspeedswift/swift,tkremenek/swift,gribozavr/swift,shahmishal/swift,stephentyrone/swift,swiftix/swift,danielmartin/swift,tjw/swift,gribozavr/swift,shajrawi/swift,practicalswift/swift,jckarter/swift,airspeedswift/swift,CodaFi/swift,OscarSwanros/swift,gribozavr/swift,hooman/swift,roambotics/swift,jmgc/swift,huonw/swift,alblue/swift,amraboelela/swift,JGiola/swift,swiftix/swift,alblue/swift,jopamer/swift,OscarSwanros/swift,airspeedswift/swift,shajrawi/swift,hooman/swift,rudkx/swift,gregomni/swift,sschiau/swift,brentdax/swift,nathawes/swift,stephentyrone/swift,nathawes/swift,practicalswift/swift,xwu/swift,huonw/swift,alblue/swift,swiftix/swift,shahmishal/swift,zisko/swift,brentdax/swift,devincoughlin/swift,benlangmuir/swift,OscarSwanros/swift,ahoppen/swift,lorentey/swift,shahmishal/swift,natecook1000/swift,allevato/swift,parkera/swift,zisko/swift,aschwaighofer/swift,zisko/swift,austinzheng/swift,zisko/swift,roambotics/swift,aschwaighofer/swift,danielmartin/swift,sschiau/swift,austinzheng/swift,shajrawi/swift,uasys/swift