[Webkit-unassigned] [Bug 68723] Resolve opcodes should have value profiling.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=68723


Filip Pizlo <fpizlo at apple.com> changed:

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 Attachment #108546|                            |review?
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--- Comment #1 from Filip Pizlo <fpizlo at apple.com>  2011-09-23 15:27:13 PST ---
Created an attachment (id=108546)
 --> (https://bugs.webkit.org/attachment.cgi?id=108546&action=review)
the patch

This is pretty much performance neutral.  There is a spurious, but totally reproducible, 0.3% slow-down in V8 on my MacBook Pro.  There are similarly sized, though not as reproducible, speed-ups in SunSpider and Kraken.  I checked and none of the benchmarks that have performance variations make any use of any of the affected opcodes.  So these are just insignificant variations due to code layout.

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