Fix VarArgs test for architectures without Float80
Fix VarArgs test for architectures without Float80

Since FileCheck does not know anything about the `#if` blocks in the
code, it tries to match the expected string against the output that is
simply never produced.

Solving this by giving it an expected string even on the architectures
that don't provide Float80.

Fixes <rdar://problem/45654446>

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