RESOLVED FIXED 63974
DFG JIT virtual call implementation is inefficient 
https://bugs.webkit.org/show_bug.cgi?id=63974
Summary DFG JIT virtual call implementation is inefficient
Filip Pizlo
Reported 2011-07-05 21:25:41 PDT
When making a virtual call, only one check is necessary to see if the function needs to be compiled. Currently, the code does two checks (first, if it's a host, and second, if it needs to be compiled). The old JIT folded both checks into a query on the number of parameters (which would be negative if the function was neither a host function nor was compiled). The DFG JIT should have the same optimization.
Attachments
the patch (6.73 KB, patch)
2011-07-05 21:52 PDT, Filip Pizlo 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Filip Pizlo
Comment 1 2011-07-05 21:52:09 PDT
Created attachment 99790 [details] the patch
WebKit Review Bot
Comment 2 2011-07-05 23:35:56 PDT
Comment on attachment 99790 [details] the patch Clearing flags on attachment: 99790 Committed r90437: <http://trac.webkit.org/changeset/90437>
WebKit Review Bot
Comment 3 2011-07-05 23:36:00 PDT
All reviewed patches have been landed. Closing bug.
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