IRGen: Remove catch-all for unimplemented instructions.
IRGen: Remove catch-all for unimplemented instructions.

Put in stubs for the remaining unimplemented SIL instructions.

Swift SVN r6288

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