Avoid inserting a new instruction twice during cast optimizations.
Avoid inserting a new instruction twice during cast optimizations.

CastOptimizer handles insertion of new instructions during peepholes on its own. sil-combine should not try to insert them again.

Swift SVN r27378

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