[Webkit-unassigned] [Bug 237385] let vs var performance

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=237385

--- Comment #2 from Yusuke Suzuki <ysuzuki at apple.com> ---
Measurement needs to be isolated by a function. And need to ensure that both functions are not inlined. Since both are run in one function, thus, the first one gets penalty because the latter one could get optimizing JIT.

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