Closed Bug 491022 Opened 15 years ago Closed 14 years ago

TM: Regression on dromaeo-object-string lastIndexOf

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED INCOMPLETE

People

(Reporter: dmandelin, Unassigned)

References

Details

The following revision seems to have regressed the lastIndexOf subtest by 2.5-4x:

changeset:   26344:1c6be1c210b9
user:        Andreas Gal <gal@mozilla.com>
date:        Fri Mar 20 18:52:11 2009 -0700
files:       js/src/jsapi.h js/src/jsfun.h js/src/jstracer.cpp js/src/jstracer.h
description:
Support calling arbitrary JSFastNatives from trace (463238, r=brendan).
maybe bug 483723 would help this?
4x is a lot. Any idea where exactly the slowdown is coming from? We used to have a slightly more efficient builtin there, but that shouldn't make a 4x difference.
I don't know the cause; right now I'm just trying to get the full list of Dromaeo regressions so we know what's going on.

I found that this regression also affects the 'substr' and 'indexOf' subtests.
David, do you know whether this is still an issue?
Closing out old regressions that have since been eclipsed by gains and overtaken by rearchitecture.
Status: NEW → RESOLVED
Closed: 14 years ago
Resolution: --- → INCOMPLETE
You need to log in before you can comment on or make changes to this bug.