[Turbofan] Soft deopt if we only have deprecated maps on optimization.

[Turbofan] Soft deopt if we only have deprecated maps on optimization.

In native context specialization, we attempt to use map-based feedback to do optimized named and element loads and stores. Tragically, it could happen that any maps we encounter for a load have been deprecated. The right thing to do here is reoptimize later, let the IC subsystem update the map.

BUG=

Committed: https://crrev.com/8587c4ce6fb74186b9ee9639532cbfb016be2ce5
Cr-Commit-Position: refs/heads/master@{#38143}

[mvstanton, 2016-07-28 13:12:18]

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

[commit-bot: I haz the power, 2016-07-28 13:12:27]

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

[mvstanton, 2016-07-28 13:14:00]

Description was changed from

==========
[Turbofan] Soft deopt if we only have deprecated maps on optimization.

BUG=
==========

to

==========
[Turbofan] Soft deopt if we only have deprecated maps on optimization.

In native context specialization, we attempt to use map-based feedback to do
optimized named and element loads and stores. Tragically, it could happen that
any maps we encounter for a load have been deprecated. The right thing to do
here is reoptimize later, let the IC subsystem update the map.

BUG=
==========

[mvstanton, 2016-07-28 13:14:00]

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

[mvstanton, 2016-07-28 13:14:23]

Hi Benedikt, here is the CL we discussed, thx for the look,
--Mike

[commit-bot: I haz the power, 2016-07-28 13:45:15]

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

[commit-bot: I haz the power, 2016-07-28 13:45:16]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2016-07-28 16:39:13]

Awesome, very nice, thanks! LGTM.

[Benedikt Meurer, 2016-07-28 16:39:32]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-07-28 16:39:36]

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, 2016-07-28 16:41:15]

Description was changed from

==========
[Turbofan] Soft deopt if we only have deprecated maps on optimization.

In native context specialization, we attempt to use map-based feedback to do
optimized named and element loads and stores. Tragically, it could happen that
any maps we encounter for a load have been deprecated. The right thing to do
here is reoptimize later, let the IC subsystem update the map.

BUG=
==========

to

==========
[Turbofan] Soft deopt if we only have deprecated maps on optimization.

In native context specialization, we attempt to use map-based feedback to do
optimized named and element loads and stores. Tragically, it could happen that
any maps we encounter for a load have been deprecated. The right thing to do
here is reoptimize later, let the IC subsystem update the map.

BUG=
==========

[commit-bot: I haz the power, 2016-07-28 16:41:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-28 16:43:49]

Description was changed from

==========
[Turbofan] Soft deopt if we only have deprecated maps on optimization.

In native context specialization, we attempt to use map-based feedback to do
optimized named and element loads and stores. Tragically, it could happen that
any maps we encounter for a load have been deprecated. The right thing to do
here is reoptimize later, let the IC subsystem update the map.

BUG=
==========

to

==========
[Turbofan] Soft deopt if we only have deprecated maps on optimization.

In native context specialization, we attempt to use map-based feedback to do
optimized named and element loads and stores. Tragically, it could happen that
any maps we encounter for a load have been deprecated. The right thing to do
here is reoptimize later, let the IC subsystem update the map.

BUG=

Committed: https://crrev.com/8587c4ce6fb74186b9ee9639532cbfb016be2ce5
Cr-Commit-Position: refs/heads/master@{#38143}
==========

[commit-bot: I haz the power, 2016-07-28 16:43:49]

Patchset 1 (id:??) landed as
https://crrev.com/8587c4ce6fb74186b9ee9639532cbfb016be2ce5
Cr-Commit-Position: refs/heads/master@{#38143}