 Use load-acquire store-release for the node pointers in the tree.
 Use load-acquire store-release for the node pointers in the tree.

Swift SVN r23413

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