[silcodemotion] Move generic code motion code below enum tag dataflow based code motion.
[silcodemotion] Move generic code motion code below enum tag dataflow based code motion.

This gets rid of forward declaration issues in the file with some subsequent
changes I am going to be making.

rdar://36032876

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