[DebugInfo] Improve check lines in a test.
[DebugInfo] Improve check lines in a test.

Addresses Vedant's post commit review. Make sure we store a
value to the shadow SSA copy we create.

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