Heap: pre-compute pthread layout details
Heap: pre-compute pthread layout details

This function is hot enough that this is worth it.

Swift SVN r18521

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