[Webkit-unassigned] [Bug 155551] Pathological performance on first execution of a function called with mismatched argument count
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Mar 16 14:12:41 PDT 2016
https://bugs.webkit.org/show_bug.cgi?id=155551
--- Comment #12 from Filip Pizlo <fpizlo at apple.com> ---
We don't usually spend a lot of time tuning for microbenchmarks, because such work doesn't end up benefiting real-world code. We only tune for microbenchmarks if the microbenchmark is carefully designed to emulate a VM pathology that occurred in real code.
I don't think that trying to optimize this tiny integer loop for cases where you didn't pass integers is going to have a high likelihood of helping users. I'd be more inclined to look at this if it was a bigger program.
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