Refactor dead_store_elim.sil
Refactor dead_store_elim.sil

Get rid of some CHECK-NEXTs. CHECK-NEXT can sometimes be fragile.
Rename a few functions to make sure the naming in the file is more consistent

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