You can code anything you want in ASM, so higher level abstractions as well. However while doing that you will lose some of the performance gain that ASM gives

You can code anything you want in ASM, so higher level abstractions as well. However while doing that you will lose some of the performance gain that ASM gives you. Optimised ASM can still be tested but one problem is that when the code doesn't work, it can simply crash. This makes it a pain to debug.