Lock invalidations of the call graph during COWArrayOpt.
Lock invalidations of the call graph during COWArrayOpt.

We already preserve the call graph, so we should not allow it to be
invalidated.

Swift SVN r27012

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