[Webkit-unassigned] [Bug 155146] Array destructuring is very slow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=155146

--- Comment #2 from Saam Barati <sbarati at apple.com> ---
(In reply to comment #1)
> In Safari Technology Preview array destructuring has improved greatly!
> However it is still considerably slower than normal array access: (~7x down
> from ~20x).
> 
>     [Log] Array - Normal - 2ms
>     [Log] Array - Destructuring - 15ms
>     [Log] Object - Normal - 1ms
>     [Log] Object - Destructuring - 1ms

I think we really need more comprehensive support for making the iterator protocol fast. Whatever we do to make for-of faster, should also make this faster.

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