Add testcase for register scanveger assertion fix in r72755 (double def due to livevars)
; RUN: llvm-as < %s | llc -mtriple=arm-linux-gnueabi -mattr=+vfp2 -float-abi=hard | grep {fcpys s0, s1}

define float @f(float %z, double %a, float %b) {
        %tmp = call float @g(float %b)
        ret float %tmp
}

declare float @g(float)