[turbofan] Introduce a dedicated ArrayBufferWasNeutered operator.

[turbofan] Introduce a dedicated ArrayBufferWasNeutered operator.

Using the dedicated simplified operator we are able to eliminate
redundant neuterung checks as long as there is no call in the
effect chain. This yields a nice speed up for the Octane Mandreel
benchmark (and TypedArray-heavy workloads in general).

R=jarin@chromium.org
BUG=v8:5267
Committed: https://crrev.com/76f740b2642032d449832b727e1fc3d70734c086
Cr-Commit-Position: refs/heads/master@{#38932}

[Benedikt Meurer, 2016-08-26 07:57:04]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-26 07:57:11]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Benedikt Meurer, 2016-08-26 07:58:46]

Hey Jaro,

Here's some nice improvement for Mandreel (and typed arrays in general).
Please take a look.

Thanks,
Benedikt

[Jarin, 2016-08-26 08:17:41]

lgtm

[Benedikt Meurer, 2016-08-26 08:24:32]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2016-08-26 08:24:36]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-08-26 08:24:39]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-26 08:34:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-26 08:35:09]

Description was changed from

==========
[turbofan] Introduce a dedicated ArrayBufferWasNeutered operator.

Using the dedicated simplified operator we are able to eliminate
redundant neuterung checks as long as there is no call in the
effect chain. This yields a nice speed up for the Octane Mandreel
benchmark (and TypedArray-heavy workloads in general).

R=jarin@chromium.org
BUG=v8:5267
==========

to

==========
[turbofan] Introduce a dedicated ArrayBufferWasNeutered operator.

Using the dedicated simplified operator we are able to eliminate
redundant neuterung checks as long as there is no call in the
effect chain. This yields a nice speed up for the Octane Mandreel
benchmark (and TypedArray-heavy workloads in general).

R=jarin@chromium.org
BUG=v8:5267

Committed: https://crrev.com/76f740b2642032d449832b727e1fc3d70734c086
Cr-Commit-Position: refs/heads/master@{#38932}
==========

[commit-bot: I haz the power, 2016-08-26 08:35:10]

Patchset 1 (id:??) landed as
https://crrev.com/76f740b2642032d449832b727e1fc3d70734c086
Cr-Commit-Position: refs/heads/master@{#38932}