Open Bug 1385282 Opened 7 years ago Updated 1 year ago

Consider desugaring JSOP_INSTANCEOF bytecode

Categories

(Core :: JavaScript Engine, enhancement, P3)

Product:
Core
Component:
JavaScript Engine
Type:
enhancement

Tracking

()

Tracking Flags:
Tracking Status
firefox57 --- wontfix

People

(Reporter: jandem, Unassigned)

References

(Blocks 1 open bug)

Details

(Whiteboard: [js:tech-debt]) 

Not sure what this would look like (the hasInstance Class check is annoying), but it would be nice to use a plain JSOP_GETELEM followed by JSOP_CALL for the @@hasInstance lookup since we already have machinery to optimize that...

(See the instanceof part in bug 1374934 comment 6.)
status-firefox57: --- → wontfix
Priority: -- → P3
Whiteboard: [js:tech-debt]
Severity: normal → S3
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