Move updates to the DevirtClassMethodInfo parameter to the of the function.
Move updates to the DevirtClassMethodInfo parameter to the of the function.

Only update the structure once we've determined we can devirtualize.

NFC.

Swift SVN r25794

return/swift,frootloops/swift,parkera/swift,OscarSwanros/swift,sdulal/swift,devincoughlin/swift,dduan/swift,xedin/swift,return/swift,SwiftAndroid/swift,IngmarStein/swift,allevato/swift,bitjammer/swift,gottesmm/swift,ahoppen/swift,frootloops/swift,practicalswift/swift,CodaFi/swift,shahmishal/swift,mightydeveloper/swift,tjw/swift,slavapestov/swift,codestergit/swift,parkera/swift,LeoShimonaka/swift,Ivacker/swift,jtbandes/swift,rudkx/swift,aschwaighofer/swift,brentdax/swift,shajrawi/swift,nathawes/swift,swiftix/swift.old,tjw/swift,lorentey/swift,frootloops/swift,therealbnut/swift,MukeshKumarS/Swift,JGiola/swift,codestergit/swift,aschwaighofer/swift,austinzheng/swift,xwu/swift,arvedviehweger/swift,slavapestov/swift,emilstahl/swift,parkera/swift,therealbnut/swift,shajrawi/swift,nathawes/swift,manavgabhawala/swift,LeoShimonaka/swift,MukeshKumarS/Swift,parkera/swift,JaSpa/swift,tkremenek/swift,tkremenek/swift,gmilos/swift,alblue/swift,allevato/swift,austinzheng/swift,Jnosh/swift,LeoShimonaka/swift,devincoughlin/swift,kentya6/swift,karwa/swift,kperryua/swift,natecook1000/swift,sschiau/swift,johnno1962d/swift,sdulal/swift,jopamer/swift,mightydeveloper/swift,kusl/swift,felix91gr/swift,cbrentharris/swift,shajrawi/swift,OscarSwanros/swift,zisko/swift,milseman/swift,sschiau/swift,CodaFi/swift,Ivacker/swift,kusl/swift,MukeshKumarS/Swift,khizkhiz/swift,zisko/swift,johnno1962d/swift,xwu/swift,milseman/swift,karwa/swift,frootloops/swift,cbrentharris/swift,slavapestov/swift,stephentyrone/swift,arvedviehweger/swift,shahmishal/swift,uasys/swift,KrishMunot/swift,karwa/swift,adrfer/swift,djwbrown/swift,adrfer/swift,nathawes/swift,SwiftAndroid/swift,airspeedswift/swift,deyton/swift,brentdax/swift,tkremenek/swift,Ivacker/swift,huonw/swift,kperryua/swift,huonw/swift,zisko/swift,CodaFi/swift,djwbrown/swift,KrishMunot/swift,gottesmm/swift,practicalswift/swift,amraboelela/swift,hooman/swift,KrishMunot/swift,natecook1000/swift,shahmishal/swift,xedin/swift,djwbrown/swift,hughbe/swift,ben-ng/swift,felix91gr/swift,OscarSwanros/swift,lorentey/swift,uasys/swift,milseman/swift,felix91gr/swift,shajrawi/swift,felix91gr/swift,airspeedswift/swift,glessard/swift,swiftix/swift.old,xwu/swift,therealbnut/swift,gregomni/swift,nathawes/swift,Jnosh/swift,gribozavr/swift,gmilos/swift,allevato/swift,return/swift,milseman/swift,felix91gr/swift,austinzheng/swift,ben-ng/swift,benlangmuir/swift,kstaring/swift,emilstahl/swift,gregomni/swift,jckarter/swift,LeoShimonaka/swift,kusl/swift,shahmishal/swift,khizkhiz/swift,hughbe/swift,atrick/swift,russbishop/swift,milseman/swift,manavgabhawala/swift,xedin/swift,CodaFi/swift,OscarSwanros/swift,bitjammer/swift,xedin/swift,practicalswift/swift,CodaFi/swift,natecook1000/swift,parkera/swift,ben-ng/swift,glessard/swift,benlangmuir/swift,ken0nek/swift,shahmishal/swift,danielmartin/swift,allevato/swift,gribozavr/swift,gottesmm/swift,dduan/swift,huonw/swift,deyton/swift,codestergit/swift,gmilos/swift,tardieu/swift,atrick/swift,codestergit/swift,xwu/swift,amraboelela/swift,stephentyrone/swift,swiftix/swift,tkremenek/swift,kentya6/swift,LeoShimonaka/swift,amraboelela/swift,devincoughlin/swift,airspeedswift/swift,glessard/swift,benlangmuir/swift,modocache/swift,aschwaighofer/swift,tinysun212/swift-windows,jmgc/swift,JGiola/swift,gregomni/swift,return/swift,khizkhiz/swift,ken0nek/swift,huonw/swift,khizkhiz/swift,jmgc/swift,swiftix/swift,benlangmuir/swift,JGiola/swift,jopamer/swift,OscarSwanros/swift,sdulal/swift,manavgabhawala/swift,cbrentharris/swift,slavapestov/swift,MukeshKumarS/Swift,swiftix/swift,IngmarStein/swift,uasys/swift,calebd/swift,ahoppen/swift,apple/swift,tinysun212/swift-windows,nathawes/swift,aschwaighofer/swift,tjw/swift,glessard/swift,devincoughlin/swift,LeoShimonaka/swift,roambotics/swift,deyton/swift,manavgabhawala/swift,dreamsxin/swift,hughbe/swift,modocache/swift,kentya6/swift,cbrentharris/swift,jckarter/swift,djwbrown/swift,brentdax/swift,xwu/swift,sdulal/swift,hooman/swift,Jnosh/swift,jmgc/swift,gribozavr/swift,sschiau/swift,ahoppen/swift,bitjammer/swift,karwa/swift,hooman/swift,IngmarStein/swift,apple/swift,glessard/swift,jmgc/swift,jckarter/swift,tardieu/swift,jopamer/swift,JGiola/swift,jtbandes/swift,brentdax/swift,emilstahl/swift,codestergit/swift,jopamer/swift,harlanhaskins/swift,djwbrown/swift,shahmishal/swift,hooman/swift,karwa/swift,allevato/swift,karwa/swift,tinysun212/swift-windows,gottesmm/swift,shajrawi/swift,shajrawi/swift,tardieu/swift,OscarSwanros/swift,lorentey/swift,johnno1962d/swift,nathawes/swift,atrick/swift,johnno1962d/swift,CodaFi/swift,danielmartin/swift,devincoughlin/swift,sschiau/swift,tkremenek/swift,rudkx/swift,parkera/swift,jopamer/swift,brentdax/swift,sdulal/swift,airspeedswift/swift,johnno1962d/swift,stephentyrone/swift,hughbe/swift,cbrentharris/swift,swiftix/swift,ken0nek/swift,russbishop/swift,manavgabhawala/swift,OscarSwanros/swift,Jnosh/swift,IngmarStein/swift,huonw/swift,tjw/swift,atrick/swift,harlanhaskins/swift,frootloops/swift,danielmartin/swift,apple/swift,austinzhen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