SILGen: Admit archetype metatypes.
SILGen: Admit archetype metatypes.

Oops. This lets test/SIL/expressions.swift be fixed.

Swift SVN r4374

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