Closed Bug 1798365 Opened 1 year ago Closed 1 year ago

Fold MMegamorphicLoadSlotByValue to MMegamorphicLoadSlot where possible

Categories

(Core :: JavaScript Engine: JIT, enhancement, P1)

enhancement

Tracking

()

RESOLVED FIXED
108 Branch
Tracking Status
firefox108 --- fixed

People

(Reporter: alexical, Assigned: alexical)

References

(Blocks 1 open bug)

Details

(Whiteboard: [sp3])

Attachments

(1 file)

GetNativeDataPropertyByValuePure was showing up in isConcatSpreadable in matrix-react-bench. It was looking up a constant symbol on the object - in this case, we can fold it the offending MMegamorphicLoadSlotByValue into MMegamorphicLoadSlot, which will let us inline it and turn the id and the id hash into immediates. It's a small win.

This was showing up in the constant symbol lookup in isConcatSpreadable in
matrix-react-bench.

Assignee: nobody → dothayer
Status: NEW → ASSIGNED
Severity: -- → N/A
Priority: -- → P1
Pushed by dothayer@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/7de0c40b31a4
Fold MMegamorphicLoadSlotByValue where possible r=jandem
Status: ASSIGNED → RESOLVED
Closed: 1 year ago
Resolution: --- → FIXED
Target Milestone: --- → 108 Branch
Regressions: 1812508
Whiteboard: [sp3]
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