[turbofan] Remove obsolete {Checkpoint} for property access.

[turbofan] Remove obsolete {Checkpoint} for property access.

By now the effect-control linearizer correctly determines the dominating
checkpoint, even for cases that contain effect-flow. We can elide the
temporary checkpoints during lowering of property loads and stores that
involve a sequence of map-checks.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2677483002
Cr-Commit-Position: refs/heads/master@{#42914}
Committed: https://chromium.googlesource.com/v8/v8/+/d4a4297eeac62e737052debf0dabc260018e6c54

[Michael Starzinger, 2017-02-02 15:02:31]

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

[commit-bot: I haz the power, 2017-02-02 15:02:40]

Dry run: 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, 2017-02-02 15:31:35]

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

[commit-bot: I haz the power, 2017-02-02 15:31:35]

Dry run: This issue passed the CQ dry run.

[Michael Starzinger, 2017-02-02 15:35:39]

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

[commit-bot: I haz the power, 2017-02-02 15:35:44]

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

[Michael Starzinger, 2017-02-02 15:47:27]

Description was changed from

==========
[turbofan] Remove obsolete {Checkpoint} for named access.

R=
==========

to

==========
[turbofan] Remove obsolete {Checkpoint} for property access.

By now the effect-control linearizer correctly determines the dominating
checkpoint, even for cases that contain effect-flow. We can elides the
temporary checkpoints during lowering of property loads and stores that
involve a sequence of map-checks.

R=bmeurer@chromium.org
==========

[Michael Starzinger, 2017-02-02 15:47:27]

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

[Michael Starzinger, 2017-02-02 15:50:15]

Description was changed from

==========
[turbofan] Remove obsolete {Checkpoint} for property access.

By now the effect-control linearizer correctly determines the dominating
checkpoint, even for cases that contain effect-flow. We can elides the
temporary checkpoints during lowering of property loads and stores that
involve a sequence of map-checks.

R=bmeurer@chromium.org
==========

to

==========
[turbofan] Remove obsolete {Checkpoint} for property access.

By now the effect-control linearizer correctly determines the dominating
checkpoint, even for cases that contain effect-flow. We can elide the
temporary checkpoints during lowering of property loads and stores that
involve a sequence of map-checks.

R=bmeurer@chromium.org
==========

[commit-bot: I haz the power, 2017-02-02 16:01:15]

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

[commit-bot: I haz the power, 2017-02-02 16:01:16]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2017-02-02 17:56:47]

Cool. LGTM!

[Michael Starzinger, 2017-02-03 08:55:51]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2017-02-03 08:56:05]

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, 2017-02-03 08:57:45]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1486112151772720,
"parent_rev": "dec6112752d700ad21873462b503f4272d3c66f4", "commit_rev":
"d4a4297eeac62e737052debf0dabc260018e6c54"}

[commit-bot: I haz the power, 2017-02-03 08:57:49]

Description was changed from

==========
[turbofan] Remove obsolete {Checkpoint} for property access.

By now the effect-control linearizer correctly determines the dominating
checkpoint, even for cases that contain effect-flow. We can elide the
temporary checkpoints during lowering of property loads and stores that
involve a sequence of map-checks.

R=bmeurer@chromium.org
==========

to

==========
[turbofan] Remove obsolete {Checkpoint} for property access.

By now the effect-control linearizer correctly determines the dominating
checkpoint, even for cases that contain effect-flow. We can elide the
temporary checkpoints during lowering of property loads and stores that
involve a sequence of map-checks.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2677483002
Cr-Commit-Position: refs/heads/master@{#42914}
Committed:
https://chromium.googlesource.com/v8/v8/+/d4a4297eeac62e737052debf0dabc260018...
==========

[commit-bot: I haz the power, 2017-02-03 08:57:50]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/v8/v8/+/d4a4297eeac62e737052debf0dabc260018...