491061 - TM Regression: shell dromaeo-string-fasta 'Homo sapiens alu'

Status: RESOLVED INCOMPLETE

(Core :: JavaScript Engine, defect)

Description

[David Mandelin [:dmandelin]]

The named subtest regressed by about 2x over a few changesets. On my machine, the 'old' score was about 7. Then this changeset increased the score to about 300:

changeset:   26344:1c6be1c210b9
user:        Andreas Gal <[e-mail]>
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).

The test runs much longer, so perhaps this changeset introduced a bug, or exposed a dromaeo bug.

Then this changeset brought the score to about 2.5, a 2x regression or so from the old score:

changeset:   26349:14b568cd9c43
user:        Andreas Gal <[e-mail]>
date:        Sat Mar 21 01:07:51 2009 -0700
files:       js/src/jstracer.cpp js/src/jstracer.h
description:
Property close loops even in the presence of partially constant loop conditions (482800, r=brendan).

Comment 1

[Mike Shaver (:shaver emeritus)]

this isn't a regression we're likely to be tracking any more