SIL.rst: Note insns that are unimplemented. Also clarify the language for `string_literal`.
SIL.rst: Note insns that are unimplemented.
Also clarify the language for `string_literal`.

Swift SVN r3379

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