SimplifyCFG: Don't simplify an instruction without a use in propagateSwitchEnumCondition
SimplifyCFG: Don't simplify an instruction without a use in propagateSwitchEnumCondition

Swift SVN r26978

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