Add a shell flag to disable TI
Categories
(Core :: JavaScript Engine, task, P2)
Tracking
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| Tracking | Status | |
|---|---|---|
| firefox75 | --- | fixed |
People
(Reporter: jandem, Assigned: jandem)
References
(Blocks 1 open bug)
Details
Attachments
(4 files)
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Assignee | |
Comment 1•5 years ago
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If TI is disabled we don't allocate any StackTypeSets in JitScript and we don't
allocate/use type monitor ICs.
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Assignee | |
Comment 2•5 years ago
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Unlike stack type monitoring, heap TI is much harder to disable completely
because it's intertwined with a lot of other things. This patch does the
following:
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Don't track type information for any ObjectGroups (in ObjectGroupRealm::makeGroup).
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Turn off heuristics for singletons, allocation-site groups, function groups.
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Turn off type update ICs in Baseline.
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Add early returns to some hot functions.
Depends on D63140
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Assignee | |
Comment 3•5 years ago
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Depends on D63141
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Assignee | |
Comment 4•5 years ago
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For now this is Nightly-only so that IsTypeInferenceEnabled() shouldn't
impact performance for our non-Nightly users.
Depends on D63143
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Updated•5 years ago
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Comment 6•5 years ago
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| bugherder | ||
https://hg.mozilla.org/mozilla-central/rev/d55c128f503c
https://hg.mozilla.org/mozilla-central/rev/444ff49a36c4
https://hg.mozilla.org/mozilla-central/rev/b337cc42de46
https://hg.mozilla.org/mozilla-central/rev/011f24c76f1f
Description
•