[Webkit-unassigned] [Bug 149338] [ES6] "super" and "this" should be lexically bound inside an arrow function and should live in a JSLexicalEnvironment

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=149338

--- Comment #73 from Saam Barati <sbarati at apple.com> ---
I renamed the bug to better indicate what the patch is doing.

How is performance on this bug? Can you run the perf tests
just to make sure we haven't regressed on things non-arrow function related.
We may have regressed slightly on some arrow-function tests, but that's expected. Also, this will get better once you implement some basic static analysis for "this" usage so we don't store "this" in the environment unless we really need to.

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