Change swift-llvm-opt to match LLVM r303360.
Change swift-llvm-opt to match LLVM r303360.

This uses the same changes from LLVM's tools/opt/opt.cpp.

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