[Webkit-unassigned] [Bug 172458] for-in bytecode generation is probably exponential

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172458

--- Comment #1 from Saam Barati <sbarati at apple.com> ---
Yup. We emit 1072675 instruction words for this function:
```
function foo(o) {
    for (let i in o) {
        for (let i in o) {
            for (let i in o) {
                for (let i in o) {
                    for (let i in o) {
                        for (let i in o) {
                            for (let i in o) {
                                for (let i in o) {
                                    for (let i in o) {
                                        2+2;
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }

}
```

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