[Webkit-unassigned] [Bug 161409] [JSC] Implement parsing of Async Functions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161409

--- Comment #15 from Yusuke Suzuki <utatane.tea at gmail.com> ---
I took the benchmark on my OS X laptop last night.

shell> Tools/Scripts/run-jsc-benchmarks baseline:WebKitBuild/async-master/Release/jsc patched:WebKitBuild/async/Release/jsc --outer=30 --octane --benchmark='closure|jquery'

Generating benchmark report at /Users/yusukesuzuki/dev/WebKit/baseline_patched_Octane_dandelion_20160909_1144_report.txt
And raw data at /Users/yusukesuzuki/dev/WebKit/baseline_patched_Octane_dandelion_20160909_1144.json

Benchmark report for Octane on dandelion (MacBookPro10,1).

VMs tested:
"baseline" at /Users/yusukesuzuki/dev/WebKit/WebKitBuild/async-master/Release/jsc
"patched" at /Users/yusukesuzuki/dev/WebKit/WebKitBuild/async/Release/jsc

Collected 30 samples per benchmark/VM, with 30 VM invocations per benchmark. Emitted a call to
gc() between sample measurements. Used 1 benchmark iteration per VM invocation for warm-up. Used
the jsc-specific preciseTime() function to get microsecond-level timing. Reporting benchmark
execution times with 95% confidence intervals in milliseconds.

                         baseline                  patched                                      

closure              0.59315+-0.00124          0.59265+-0.00138       
jquery               7.91025+-0.02773    ?     7.91560+-0.03665       ?

<geometric>          2.16606+-0.00448          2.16585+-0.00537         might be 1.0001x faster

It seems that the performance is neutral.

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