[Webkit-unassigned] [Bug 122084] optimize jsarray setlength

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=122084


Peng Xinchao <xinchao.peng at samsung.com> changed:

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 Attachment #212944|                            |review?, commit-queue?
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--- Comment #1 from Peng Xinchao <xinchao.peng at samsung.com>  2013-09-29 19:35:06 PST ---
Created an attachment (id=212944)
 --> (https://bugs.webkit.org/attachment.cgi?id=212944&action=review)
optimze jsarray setlength

 JSC Engine Optimize 'var ret =[] ; ret.length=1024' .When type of  ret is undefine and it   is setted length , its only public length is setted ,but its vector is not setted . the memory of variable ret is not changed .When the type of variable ret is confirm , its will allocate memory by public length.

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