Add a helper overload of SILBasicBlock::insertBBArgs that takes an integer index as a position instead of a bbarg_iterator.
Add a helper overload of SILBasicBlock::insertBBArgs that takes an
integer index as a position instead of a bbarg_iterator.

Swift SVN r23585

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