Fix DI to remove assign instructions from its Uses list when it lowers them (causing the pointer to dangle).   This doesn't  currently manifest as a problem, but will with some changes that  are coming.
Fix DI to remove assign instructions from its Uses list when it
lowers them (causing the pointer to dangle).   This doesn't 
currently manifest as a problem, but will with some changes that 
are coming.


Swift SVN r9706

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