ES6: improve performance of ES6 instanceof

ES6: improve performance of ES6 instanceof

This CL restores special crankshaft optimizations for instance of when
--harmony-instanceof is true. Similar work has to happen for TurboFan.

I've added a flag to pile-up the optimizations to be done elsewhere, which
will follow over several CLs.

R=verwaest@chromium.org, mstarzinger@chromium.org
BUG=v8:4447
LOG=n

Committed: https://crrev.com/f19ec926003282dcc554bb41641fbdf4eaf4a7fe
Cr-Commit-Position: refs/heads/master@{#34930}

[mvstanton, 2016-03-17 15:18:01]

Hi guys,
This turns a walloping 86% regression on EB to 25%. Additional improvements to
follow..
Thx,
--Mike

[Michael Starzinger, 2016-03-18 15:06:40]

LGTM on performance workaround.

https://codereview.chromium.org/1809113002/diff/20001/src/flag-definitions.h
File src/flag-definitions.h (right):

https://codereview.chromium.org/1809113002/diff/20001/src/flag-definitions.h#...
src/flag-definitions.h:276: DEFINE_BOOL(harmony_instanceof_opt, false, "optimize
ES6 instanceof support")
We could actually turn this on right away, because the whole thing is still
guarded bu FLAG_harmony_instanceof, correct?

[Michael Starzinger, 2016-03-21 09:46:44]

Description was changed from

==========
ES6: improve performance of ES6 instanceof

This CL restores special crankshaft optimizations for instance of when
--harmony-instanceof is true. Similar work has to happen for TurboFan.

I've added a flag to pile-up the optimizations to be done elsewhere, which
will follow over several CLs.

R=verwaest@chromium.org, mstarzinger@chromium.org
BUG=
==========

to

==========
ES6: improve performance of ES6 instanceof

This CL restores special crankshaft optimizations for instance of when
--harmony-instanceof is true. Similar work has to happen for TurboFan.

I've added a flag to pile-up the optimizations to be done elsewhere, which
will follow over several CLs.

R=verwaest@chromium.org, mstarzinger@chromium.org
BUG=v8:4447
LOG=n
==========

[Toon Verwaest, 2016-03-21 10:16:39]

lgtm

[Michael Starzinger, 2016-03-21 10:33:31]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2016-03-21 10:33:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1809113002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1809113002/20001

[Benedikt Meurer, 2016-03-21 11:02:14]

bmeurer@chromium.org changed reviewers:
+ bmeurer@chromium.org

[Benedikt Meurer, 2016-03-21 11:02:15]

LGTM (rubberstamped)

[commit-bot: I haz the power, 2016-03-21 11:33:58]

Description was changed from

==========
ES6: improve performance of ES6 instanceof

This CL restores special crankshaft optimizations for instance of when
--harmony-instanceof is true. Similar work has to happen for TurboFan.

I've added a flag to pile-up the optimizations to be done elsewhere, which
will follow over several CLs.

R=verwaest@chromium.org, mstarzinger@chromium.org
BUG=v8:4447
LOG=n
==========

to

==========
ES6: improve performance of ES6 instanceof

This CL restores special crankshaft optimizations for instance of when
--harmony-instanceof is true. Similar work has to happen for TurboFan.

I've added a flag to pile-up the optimizations to be done elsewhere, which
will follow over several CLs.

R=verwaest@chromium.org, mstarzinger@chromium.org
BUG=v8:4447
LOG=n
==========

[commit-bot: I haz the power, 2016-03-21 11:33:58]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-03-21 11:35:22]

Description was changed from

==========
ES6: improve performance of ES6 instanceof

This CL restores special crankshaft optimizations for instance of when
--harmony-instanceof is true. Similar work has to happen for TurboFan.

I've added a flag to pile-up the optimizations to be done elsewhere, which
will follow over several CLs.

R=verwaest@chromium.org, mstarzinger@chromium.org
BUG=v8:4447
LOG=n
==========

to

==========
ES6: improve performance of ES6 instanceof

This CL restores special crankshaft optimizations for instance of when
--harmony-instanceof is true. Similar work has to happen for TurboFan.

I've added a flag to pile-up the optimizations to be done elsewhere, which
will follow over several CLs.

R=verwaest@chromium.org, mstarzinger@chromium.org
BUG=v8:4447
LOG=n

Committed: https://crrev.com/f19ec926003282dcc554bb41641fbdf4eaf4a7fe
Cr-Commit-Position: refs/heads/master@{#34930}
==========

[commit-bot: I haz the power, 2016-03-21 11:35:23]

Patchset 2 (id:??) landed as
https://crrev.com/f19ec926003282dcc554bb41641fbdf4eaf4a7fe
Cr-Commit-Position: refs/heads/master@{#34930}