1342369 - [meta] Regression on misc-basic-array-forof on Jan 31

Status: NEW

(Core :: JavaScript Engine: JIT, defect, P3)

Description

[Hannes Verschore [:h4writer]]

Investigating a regression that happened on Jan 31st - Feb 3rd. Seems like it are two separate regressions and a regression on Feb 8th

First regression is:

changeset:   332008:c2314298c556
user:        Shu-yu Guo <[e-mail]>
date:        Wed Feb 01 12:04:30 2017 -0800
summary:     Bug 1333946 - Make IonBuilder::processIterators transitive. (r=jandem)

Third regression is (Feb 8th):
https://hg.mozilla.org/integration/mozilla-inbound/log?rev=c5b88e4e70f4::43ac95c99af6%20and%20!c5b88e4e70f4
Bug 1334194 - TraceLogger changes for multithreaded runtimes, r=h4writer.

Comment 1

[Hannes Verschore [:h4writer]]

Second regression is:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=b90b9d2dfb30&tochange=a2caf5127bf4
Jan de Mooij — Bug 1091978 - Make CacheIR AddProp stub support dynamic slot (re)allocation. r=evilpie

Comment 2

[Hannes Verschore [:h4writer]]

Benchmark:
https://github.com/h4writer/arewefastyet/tree/master/benchmarks/misc

Run as:
./sunspider --shell=$JS/dist/bin/js

Configuration:
64bit ubuntu/mac

Comment 3

[Hannes Verschore [:h4writer]]

I see a forth regression:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=250c680482eb&tochange=168f923ea6e7

I retriggered to have a better regression range:
https://arewefastyet.com/task_info.php?id=69527

Comment 4

[Hannes Verschore [:h4writer]]

(In reply to Hannes Verschore [:h4writer] from comment #3)
> I see a forth regression:
> https://hg.mozilla.org/integration/mozilla-inbound/
> pushloghtml?fromchange=250c680482eb&tochange=168f923ea6e7
> 
> I retriggered to have a better regression range:
> https://arewefastyet.com/task_info.php?id=69527

Seems to be:
Brian Hackett <[e-mail]> - Wed, 08 Feb 2017 05:23:32 -0700 - rev 341355
Push 86695 by [e-mail] at 2017-02-08 15:18 +0000
Bug 1334212 - Handle multiple contexts per runtime in compiled JIT code, r=h4writer. 

I will merge into depending bug 1342384