[Coverage] Add DEBUG helpers, NFC
[Coverage] Add DEBUG helpers, NFC

These helpers make it easier to debug how profiling state and coverage
mappings are built up (just add -Xllvm -debug-only=SILProfiler to your
swiftc invocation).

karwa/swift,shahmishal/swift,lorentey/swift,tkremenek/swift,xwu/swift,parkera/swift,glessard/swift,devincoughlin/swift,jopamer/swift,roambotics/swift,roambotics/swift,lorentey/swift,practicalswift/swift,devincoughlin/swift,karwa/swift,harlanhaskins/swift,brentdax/swift,benlangmuir/swift,parkera/swift,xedin/swift,ahoppen/swift,aschwaighofer/swift,austinzheng/swift,benlangmuir/swift,jckarter/swift,devincoughlin/swift,sschiau/swift,airspeedswift/swift,stephentyrone/swift,karwa/swift,atrick/swift,natecook1000/swift,stephentyrone/swift,airspeedswift/swift,parkera/swift,austinzheng/swift,jopamer/swift,brentdax/swift,glessard/swift,CodaFi/swift,sschiau/swift,sschiau/swift,allevato/swift,gribozavr/swift,roambotics/swift,aschwaighofer/swift,JGiola/swift,devincoughlin/swift,austinzheng/swift,brentdax/swift,jmgc/swift,brentdax/swift,xedin/swift,danielmartin/swift,practicalswift/swift,gribozavr/swift,karwa/swift,danielmartin/swift,gribozavr/swift,CodaFi/swift,brentdax/swift,sschiau/swift,lorentey/swift,austinzheng/swift,xedin/swift,gribozavr/swift,jopamer/swift,jckarter/swift,danielmartin/swift,airspeedswift/swift,CodaFi/swift,danielmartin/swift,allevato/swift,nathawes/swift,tkremenek/swift,amraboelela/swift,glessard/swift,airspeedswift/swift,jopamer/swift,huonw/swift,lorentey/swift,ahoppen/swift,practicalswift/swift,ahoppen/swift,xwu/swift,karwa/swift,apple/swift,gribozavr/swift,apple/swift,JGiola/swift,alblue/swift,allevato/swift,nathawes/swift,xwu/swift,JGiola/swift,parkera/swift,huonw/swift,huonw/swift,jckarter/swift,nathawes/swift,jckarter/swift,rudkx/swift,xedin/swift,aschwaighofer/swift,danielmartin/swift,aschwaighofer/swift,stephentyrone/swift,atrick/swift,xwu/swift,rudkx/swift,shajrawi/swift,jmgc/swift,alblue/swift,amraboelela/swift,parkera/swift,glessard/swift,sschiau/swift,CodaFi/swift,danielmartin/swift,karwa/swift,shahmishal/swift,roambotics/swift,amraboelela/swift,hooman/swift,tkremenek/swift,sschiau/swift,gregomni/swift,devincoughlin/swift,xedin/swift,benlangmuir/swift,JGiola/swift,shajrawi/swift,lorentey/swift,practicalswift/swift,harlanhaskins/swift,aschwaighofer/swift,natecook1000/swift,shajrawi/swift,xwu/swift,shajrawi/swift,roambotics/swift,gregomni/swift,amraboelela/swift,natecook1000/swift,gribozavr/swift,airspeedswift/swift,benlangmuir/swift,gribozavr/swift,xedin/swift,shajrawi/swift,allevato/swift,jmgc/swift,huonw/swift,parkera/swift,harlanhaskins/swift,airspeedswift/swift,rudkx/swift,apple/swift,amraboelela/swift,atrick/swift,jmgc/swift,nathawes/swift,ahoppen/swift,sschiau/swift,alblue/swift,shajrawi/swift,practicalswift/swift,natecook1000/swift,huonw/swift,alblue/swift,practicalswift/swift,practicalswift/swift,shahmishal/swift,nathawes/swift,jopamer/swift,roambotics/swift,rudkx/swift,harlanhaskins/swift,hooman/swift,karwa/swift,tkremenek/swift,jckarter/swift,jmgc/swift,practicalswift/swift,JGiola/swift,stephentyrone/swift,jckarter/swift,huonw/swift,harlanhaskins/swift,hooman/swift,xwu/swift,shahmishal/swift,xedin/swift,gregomni/swift,benlangmuir/swift,benlangmuir/swift,jopamer/swift,gregomni/swift,danielmartin/swift,JGiola/swift,jckarter/swift,stephentyrone/swift,austinzheng/swift,shajrawi/swift,rudkx/swift,lorentey/swift,alblue/swift,apple/swift,glessard/swift,tkremenek/swift,gregomni/swift,stephentyrone/swift,CodaFi/swift,allevato/swift,austinzheng/swift,allevato/swift,hooman/swift,shahmishal/swift,xwu/swift,natecook1000/swift,CodaFi/swift,natecook1000/swift,hooman/swift,brentdax/swift,rudkx/swift,atrick/swift,sschiau/swift,gregomni/swift,ahoppen/swift,apple/swift,hooman/swift,atrick/swift,CodaFi/swift,allevato/swift,amraboelela/swift,harlanhaskins/swift,jopamer/swift,alblue/swift,parkera/swift,devincoughlin/swift,atrick/swift,apple/swift,natecook1000/swift,shahmishal/swift,xedin/swift,austinzheng/swift,shahmishal/swift,devincoughlin/swift,jmgc/swift,brentdax/swift,aschwaighofer/swift,alblue/swift,stephentyrone/swift,airspeedswift/swift,lorentey/swift,ahoppen/swift,aschwaighofer/swift,harlanhaskins/swift,tkremenek/swift,glessard/swift,shahmishal/swift,gribozavr/swift,devincoughlin/swift,hooman/swift,parkera/swift,nathawes/swift,amraboelela/swift,nathawes/swift,jmgc/swift,karwa/swift,lorentey/swift,tkremenek/swift,shajrawi/swift,huonw/swift