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Details

Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 5.12.3
Affects Version/s: 5.11.1, 5.12
Component/s: QML: Declarative and Javascript Engine
Labels:
None

Description

The compositesingleton benchmark was recently added to qmlbench as an example of a common coding pattern with QML. It is showing an ~15% drop in performance between 5.9 and 5.11+.

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resulted in

QTBUG-72851 Benchmark the effect of enabling lookups in QML

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Assignee:: Simon Hausmann

Reporter:: Michael Brasser

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 10 Aug '18 14:15

Updated:: 21 Mar '19 14:45

Resolved:: 21 Mar '19 14:45

Gerrit Reviews

There are no open Gerrit changes

Show There are 16 closed Gerrit changes

Hide There are 16 closed Gerrit changes

WIP: Reintroduce compile-time resolution of singletons: Gerrit Review:

WIP: Cache query results in QQmlTypeNameCache: Gerrit Review:

Make object property lookup resolution virtual: Gerrit Review:

Fix type error exception messages when using member lookups: Gerrit Review:

Enable lookups in QML: Gerrit Review:

Fix up global name determination when compiling ahead of time: Gerrit Review:

Fix lookups the transition between primitive strings and string objects: Gerrit Review:

Implement dummy QML lookups for "global" variables: Gerrit Review:

Remove dead compile time QML context/scope property and id object code: Gerrit Review:

Accelerate access to singletons and imported scripts: Gerrit Review:

Accelerate lookup of singleton properties: Gerrit Review:

Accelerate access to id objects in lookups: Gerrit Review:

Fix lookup fallback into the global object in QML bindings: Gerrit Review:

Accelerate access to scope object properties in lookups: Gerrit Review:

Accelerate access to initial context object properties in lookups: Gerrit Review:

Accelerate lookups of properties in outer QML contexts: Gerrit Review: