[turbofan] Introduce simplified operators directly in BytecodeGraphBuilder.

[turbofan] Introduce simplified operators directly in BytecodeGraphBuilder.

Instead of doing the dance via JSStrictEqual for comparisons with null,
undefined or the hole, we can just go to ReferenceEqual directly. Also
avoid the Select(x, false, true) dance for negation and use BooleanNot
directly.

R=mstarzinger@chromium.org

Review-Url: https://codereview.chromium.org/2646763004
Cr-Commit-Position: refs/heads/master@{#42500}
Committed: https://chromium.googlesource.com/v8/v8/+/1c278ebe2dfc81fc04d2fe53fa1e0b16e02c1cdd

[Benedikt Meurer, 2017-01-19 12:43:52]

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

[commit-bot: I haz the power, 2017-01-19 12:44:04]

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

[Benedikt Meurer, 2017-01-19 12:45:36]

Hey Michi,

Here's the simplification for the BytecodeGraphBuilder that we talked about.
Please take a look.

Thanks,
Benedikt

[Michael Starzinger, 2017-01-19 13:02:42]

LGTM.

[Benedikt Meurer, 2017-01-19 13:03:27]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2017-01-19 13:03:31]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-01-19 13:03:44]

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, 2017-01-19 13:13:18]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484831011712120, "parent_rev":
"097e1ac6c74992b47aedee4cd3c98475438a38e1", "commit_rev":
"1c278ebe2dfc81fc04d2fe53fa1e0b16e02c1cdd"}

[commit-bot: I haz the power, 2017-01-19 13:13:22]

Description was changed from

==========
[turbofan] Introduce simplified operators directly in BytecodeGraphBuilder.

Instead of doing the dance via JSStrictEqual for comparisons with null,
undefined or the hole, we can just go to ReferenceEqual directly. Also
avoid the Select(x, false, true) dance for negation and use BooleanNot
directly.

R=mstarzinger@chromium.org
==========

to

==========
[turbofan] Introduce simplified operators directly in BytecodeGraphBuilder.

Instead of doing the dance via JSStrictEqual for comparisons with null,
undefined or the hole, we can just go to ReferenceEqual directly. Also
avoid the Select(x, false, true) dance for negation and use BooleanNot
directly.

R=mstarzinger@chromium.org

Review-Url: https://codereview.chromium.org/2646763004
Cr-Commit-Position: refs/heads/master@{#42500}
Committed:
https://chromium.googlesource.com/v8/v8/+/1c278ebe2dfc81fc04d2fe53fa1e0b16e02...
==========

[commit-bot: I haz the power, 2017-01-19 13:13:23]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/1c278ebe2dfc81fc04d2fe53fa1e0b16e02...