[Webkit-unassigned] [Bug 154639] [ES6] Arrow function. Some not used byte code is emited

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=154639

Saam Barati <sbarati at apple.com> changed:

           What    |Removed                     |Added
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 Attachment #272579|review?                     |review+
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--- Comment #5 from Saam Barati <sbarati at apple.com> ---
Comment on attachment 272579
  --> https://bugs.webkit.org/attachment.cgi?id=272579
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=272579&action=review

> Source/JavaScriptCore/ChangeLog:13
> +        1.create_lexical_environment not emited always for arrow function, only if some of 
> +        features(this/super/arguments/eval) is used inside of the arrow function. 
> +        2.load 'this' from arrow function scope in constructor is done only if super 
> +        contains in arrow function 

Nice!

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