Don't track property types for non-singleton environment objects
Categories
(Core :: JavaScript Engine, task, P1)
Tracking
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| firefox73 | --- | fixed |
People
(Reporter: jandem, Assigned: jandem)
References
Details
Attachments
(2 files)
The JITs don't use these types so it's just unnecessary work.
I have a patch to tidy up environment object allocation to go through a single function, and then we can easily make this change on top of that.
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Comment 1•3 years ago
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Comment 2•3 years ago
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Ion is only interested in the global lexical environment, a singleton. Don't
waste time tracking property types for other environments.
Depends on D57776
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Updated•3 years ago
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Pushed by jdemooij@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/404d35386c05 part 1 - Tidy up and de-duplicate environment object allocation code. r=jonco https://hg.mozilla.org/integration/autoland/rev/ee35112c00d1 part 2 - Don't track property types for non-singleton environment objects. r=jonco
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Comment 4•3 years ago
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| bugherder | ||
https://hg.mozilla.org/mozilla-central/rev/404d35386c05
https://hg.mozilla.org/mozilla-central/rev/ee35112c00d1
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Comment 5•3 years ago
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== Change summary for alert #24566 (as of Fri, 20 Dec 2019 22:14:47 GMT) ==
Improvements:
3% Base Content JS macosx1014-64-shippable opt 3,841,908.00 -> 3,732,358.00
3% Base Content JS windows10-64-shippable opt 3,903,856.00 -> 3,793,289.33
3% Base Content JS windows10-64-shippable-qr opt 3,903,813.33 -> 3,793,342.67
3% Base Content JS linux64 opt 3,836,689.33 -> 3,729,194.00
3% Base Content JS linux64-qr opt 3,836,716.00 -> 3,729,408.67
3% Base Content JS linux64-shippable opt 3,836,716.00 -> 3,729,354.00
3% Base Content JS linux64-shippable-qr opt 3,836,732.00 -> 3,729,267.33
3% Base Content JS windows10-64 opt 3,899,684.00 -> 3,792,622.67
3% Base Content JS windows10-64-qr opt 3,899,709.33 -> 3,792,586.67
2% Base Content JS windows7-32 opt 3,002,032.47 -> 2,943,174.00
2% Base Content JS windows7-32-shippable opt 3,002,039.06 -> 2,943,175.33
For up to date results, see: https://treeherder.mozilla.org/perf.html#/alerts?id=24566
Description
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