RESOLVED FIXED 20812
MASTER: Function call overhead is taking a lot of time on v8's benchmarks 
https://bugs.webkit.org/show_bug.cgi?id=20812
Summary MASTER: Function call overhead is taking a lot of time on v8's benchmarks
Maciej Stachowiak
Reported 2008-09-12 15:11:24 PDT
Many of v8's individual benchmark tests spend a lot of time in function call overhead, including cti_op_call_JSFunction, cti_op_ret, and getCallData. It is the top issue on the Richards, DeltaBlue, and EarleyBoyer test cases.There is also some effect on Crypto and Raytrace. Shark profiles to come.
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Maciej Stachowiak
Comment 1 2008-09-12 15:55:46 PDT
See bug 20813 for Shark profiles of individual v8 tests. Note: this should probably be broken down into separate bugs for separate tasks.
Cameron Zwarich (cpst)
Comment 2 2008-10-01 23:11:35 PDT
Replacing ExecState with a call frame Register pointer is bug 21295.
Cameron Zwarich (cpst)
Comment 3 2008-10-01 23:18:43 PDT
Removing profiling hooks when not profiling is bug 21296.
Cameron Zwarich (cpst)
Comment 4 2008-10-01 23:36:41 PDT
Moving toThisObject() conversion to the callee is bug 21297.
Cameron Zwarich (cpst)
Comment 5 2008-10-02 14:53:48 PDT
Replacing the RegisterFile size and capacity information with Register pointers is bug 21317.
Cameron Zwarich (cpst)
Comment 6 2008-10-02 16:05:47 PDT
Avoiding restoring the caller's 'r' value in op_ret is bug 21319.
Cameron Zwarich (cpst)
Comment 7 2008-10-04 00:37:09 PDT
Removing the branch in op_ret for OptionalCalleeActivation and OptionalCalleeArguments is bug 21364.
Cameron Zwarich (cpst)
Comment 8 2008-10-05 22:45:54 PDT
Removing the OptionalCalleeActivation call frame slot is bug 21396.
Cameron Zwarich (cpst)
Comment 9 2008-10-13 17:51:11 PDT
Removing the branches for CodeBlock and CTI code in function call logic is bug 21583.
Gavin Barraclough
Comment 10 2012-03-07 00:02:14 PST
All dependencies closed, making fixed.
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