[Webkit-unassigned] [Bug 70418] DFG JIT 32_64 - improve double boxing/unboxing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=70418


Gavin Barraclough <barraclough at apple.com> changed:

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--- Comment #5 from Gavin Barraclough <barraclough at apple.com>  2011-10-19 12:47:59 PST ---
(From update of attachment 111614)
This is excellent.  I think we might be able to do even better in some cases - from fillSpeculateDouble, if a value is currently in memory we should probably be loading directly into fpr rather than going via a register - we could then compare to memory to test the tag, or compare the fpr to itself to test form NaN-encoded values.
Still, this improvement is simple awesome!

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