[turbofan] Pass NoContextConstant to stubs that don't need a context.

[turbofan] Pass NoContextConstant to stubs that don't need a context.

The generic implementations for typeof, strict equality and ToBoolean
don't need a context, so we can just pass the NoContextConstant (which
is Smi zero) instead, to reduce the live ranges for the context.

R=mvstanton@chromium.org

Committed: https://crrev.com/1411c7628b6c2eb325585fabcbfe7c4164de8640
Cr-Commit-Position: refs/heads/master@{#40027}

[Benedikt Meurer, 2016-10-06 09:19:20]

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

[commit-bot: I haz the power, 2016-10-06 09:19:30]

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

[mvstanton, 2016-10-06 09:25:46]

lgtm

[commit-bot: I haz the power, 2016-10-06 09:50:52]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-06 09:50:53]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer (Google), 2016-10-06 10:12:01]

The CQ bit was checked by bmeurer@google.com

[commit-bot: I haz the power, 2016-10-06 10:12:11]

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, 2016-10-06 10:15:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-06 10:15:50]

Description was changed from

==========
[turbofan] Pass NoContextConstant to stubs that don't need a context.

The generic implementations for typeof, strict equality and ToBoolean
don't need a context, so we can just pass the NoContextConstant (which
is Smi zero) instead, to reduce the live ranges for the context.

R=mvstanton@chromium.org
==========

to

==========
[turbofan] Pass NoContextConstant to stubs that don't need a context.

The generic implementations for typeof, strict equality and ToBoolean
don't need a context, so we can just pass the NoContextConstant (which
is Smi zero) instead, to reduce the live ranges for the context.

R=mvstanton@chromium.org

Committed: https://crrev.com/1411c7628b6c2eb325585fabcbfe7c4164de8640
Cr-Commit-Position: refs/heads/master@{#40027}
==========

[commit-bot: I haz the power, 2016-10-06 10:15:51]

Patchset 1 (id:??) landed as
https://crrev.com/1411c7628b6c2eb325585fabcbfe7c4164de8640
Cr-Commit-Position: refs/heads/master@{#40027}