Open
Bug 1894937
Opened 5 months ago
Updated 22 days ago
Throw away optimized JIT code that references otherwise-dead GC things
Categories
(Core :: JavaScript Engine: JIT, enhancement, P2)
Core
JavaScript Engine: JIT
Tracking
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NEW
People
(Reporter: jonco, Assigned: bthrall)
References
(Blocks 1 open bug)
Details
(Whiteboard: [sp3])
Following on from bug 1837620, we can investigate doing the same thing for optimized JIT code. This should reduce the amount of garbage we keep alive unnecessarily.
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Updated•5 months ago
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Severity: -- → N/A
Priority: -- → P2
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Updated•5 months ago
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Whiteboard: [sp3]
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Updated•5 months ago
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See Also: → https://mozilla-hub.atlassian.net/browse/SP3-756
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Assignee | |
Comment 1•22 days ago
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To clarify, the change here is to apply the changes from bug 1837620 to Ion-compiled JIT code.
This means Ion guard ICs referring to Shapes and JSObject should use weak pointers. Since Ion can inline ICs, we need to make sure those use weak pointers as well.
There might be more GC references in guards that we can make weak pointers, as well. If it is simple enough, we can do that as part of this bug, or make a new bug to cover those changes.
Assignee: nobody → bthrall
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Description
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