Weird `extractvalue`s

Foo.jl

using InteractiveUtils

struct Foo
    a::UInt
    b::NTuple{32, UInt8}
    c::NTuple{4096, UInt8}
    d::NTuple{4096, UInt8}
end

ident(_) = 0x0
Foo() = Foo(0, ntuple(ident, 0x20), ntuple(ident, 0x1000), ntuple(ident, 0x1000))

function access_tuple(array, vars...)
    @inbounds vars[1]
end

function set_array(array, vars...)
    @inbounds array[1] = vars[1]
    array
end

function read_array(array, vars...)
    @inbounds array[1]
end

function main()
    for func in (access_tuple, set_array, read_array)
        println("Doing function ", func, " llvm")
        open("code_llvm_$func.ll", "w") do io
            code_llvm(io, func, (Vector{Foo}, Tuple{Foo}); raw=true)
        end
        println("Doing function ", func, " native")
        open("code_native_$func.asm", "w") do io
            code_native(io, func, (Vector{Foo}, Tuple{Foo}))
        end
    end
end