Open Bug 1388560 Opened 7 years ago Updated 2 years ago

stylo: Make important_rules_change in compute_style() more accurate

Categories

(Core :: CSS Parsing and Computation, enhancement, P4)

Product:
Core
Component:
CSS Parsing and Computation
Type:
enhancement

Tracking

()

Tracking Flags:
Tracking Status
firefox57 --- wontfix

People

(Reporter: hiro, Unassigned)

References

(Blocks 2 open bugs)

Details

Currently we set important_rules_change to true in compute_style() [1] whenever we process 
MatchAndCascade. If we refine it, we can avoid needless SequentialTasks.

I noticed this fact when I run test_restyles.html on stylo.

[1] https://hg.mozilla.org/mozilla-central/file/1d042bcb2632/servo/components/style/traversal.rs#l669
Blocks: stylo-perf
Priority: -- → P4
status-firefox57=wontfix unless someone thinks this bug should block 57
status-firefox57: affected → wontfix
Severity: normal → S3
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