excessively large loops

[sajattack]

Hey, I'm not sure if this is something that can be fixed or required by LLVM/Rust ABI, but I noticed some simple busy loops were quite large (42 bytes).

#[inline(never)]
extern fn delay() {
    for _ in 0..16u8 {
        for _ in 0..255u8 {
            unsafe { nop(); }
        }
    }
}

This emits:

When imo it should emit something more like

Let me know if this isn't possible and feel free to close, but I thought I should mention it.