[turbofan] Utilize maps from field type tracking to eliminate map checks.

[turbofan] Utilize maps from field type tracking to eliminate map checks.

Hook up TurboFan with the existing field type tracking machinery to
eliminate redundant map checks on the results of LoadField operators.
The store side is already implemented in TurboFan for quite some time,
this just adds the load part.

R=jarin@chromium.org
BUG=v8:5267
Review-Url: https://codereview.chromium.org/2604393002
Cr-Commit-Position: refs/heads/master@{#42015}
Committed: https://chromium.googlesource.com/v8/v8/+/589ecbfa85a7e1b3e80d85a6af2f3488009982bc

[Benedikt Meurer, 2017-01-02 13:36:12]

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

[commit-bot: I haz the power, 2017-01-02 13:36:22]

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, 2017-01-02 14:01:31]

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

[commit-bot: I haz the power, 2017-01-02 14:01:32]

Dry run: This issue passed the CQ dry run.

[Jarin, 2017-01-02 18:38:00]

lgtm

[Benedikt Meurer, 2017-01-02 19:05:42]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-01-02 19:05:52]

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, 2017-01-02 19:07:29]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483383942760730, "parent_rev":
"4f95a1eb5fc22bef9a69e7856b03dbddb40e20ec", "commit_rev":
"589ecbfa85a7e1b3e80d85a6af2f3488009982bc"}

[commit-bot: I haz the power, 2017-01-02 19:07:34]

Description was changed from

==========
[turbofan] Utilize maps from field type tracking to eliminate map checks.

Hook up TurboFan with the existing field type tracking machinery to
eliminate redundant map checks on the results of LoadField operators.
The store side is already implemented in TurboFan for quite some time,
this just adds the load part.

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

to

==========
[turbofan] Utilize maps from field type tracking to eliminate map checks.

Hook up TurboFan with the existing field type tracking machinery to
eliminate redundant map checks on the results of LoadField operators.
The store side is already implemented in TurboFan for quite some time,
this just adds the load part.

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

Review-Url: https://codereview.chromium.org/2604393002
Cr-Commit-Position: refs/heads/master@{#42015}
Committed:
https://chromium.googlesource.com/v8/v8/+/589ecbfa85a7e1b3e80d85a6af2f3488009...
==========

[commit-bot: I haz the power, 2017-01-02 19:07:35]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/589ecbfa85a7e1b3e80d85a6af2f3488009...