[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 #158 from Filip Pizlo <fpizlo at apple.com> ---
(In reply to comment #157)
> (In reply to comment #156)
> > (In reply to comment #155)
> > > (In reply to comment #154)
> > > > Did anyone run performance tests on this?
> > > 
> > > https://bugs.webkit.org/attachment.cgi?id=265179
> > 
> > That's in debug mode.  Debug mode performance numbers are not meaningful.
> > 
> > We should make sure to do release mode performance testing of patches like
> > this.
> 
> I didn't run the tests so I don't know for sure but the results text result
> looks like a release build. What made you say it was Debug?

The performance is very bad in absolute terms.

I also just noticed that the performance numbers are super noisy.

Either way, someone needs to run independent performance numbers on this because these don't look right.

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