Test the impact of inlining on the interpreter

summer_inlining.jl

function summer(A)
    s = zero(eltype(A))
    for a in A
        s += a
    end
    return s
end

function summer_inlined(A)
    TA = typeof(A)
    T = eltype(TA)
    s = Base.sitofp(T, 0)
    i = 1
    @label itertop
    iu = Base.bitcast(UInt, i)
    IT = promote_type(typeof(iu), typeof(1))
    iuu = Base.bitcast(IT, iu)
    u1 = Base.bitcast(IT, 1)
    Base.not_sametype((iu, 1), (iuu, u1))
    j = Base.sub_int(iuu, u1)
    len = Base.arraylen(A)
    if Base.and_int(Base.sle_int(0, len), Base.ult_int(j, Base.bitcast(IT, len)))
        apre = @inbounds Core.arrayref(true, A, i)
        ipre = Base.add_int(i, 1)
        iterresult = (apre, ipre)
    else
        iterresult = nothing
    end
    itercmp = iterresult === nothing
    if Base.not_int(itercmp)
        a = getfield(iterresult, 1)
        i = getfield(iterresult, 2)
        s = Base.add_float(s, a)
        @goto itertop
    end
    return s
end