[turbofan] Propagate tenuring decisions to child object allocations.

[turbofan] Propagate tenuring decisions to child object allocations.

When an allocation for a parent object is pretenured, also propagate
that to all allocations for objects that are (potentially) stored into
the parent object.

R=jarin@chromium.org

Committed: https://crrev.com/825f506fab01c1e158603c0915231bd7b8ac19c8
Cr-Commit-Position: refs/heads/master@{#39534}

[Benedikt Meurer, 2016-09-20 05:56:55]

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

[commit-bot: I haz the power, 2016-09-20 05:57:02]

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, 2016-09-20 06:22:11]

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

[commit-bot: I haz the power, 2016-09-20 06:22:12]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2016-09-20 06:24:05]

Hey Jaro,

Here's the first part to Splay performance.
Please take a look.

Thanks,
Benedikt

[Jarin, 2016-09-20 09:40:29]

lgtm

https://codereview.chromium.org/2348293003/diff/1/src/compiler/memory-optimiz...
File src/compiler/memory-optimizer.cc (right):

https://codereview.chromium.org/2348293003/diff/1/src/compiler/memory-optimiz...
src/compiler/memory-optimizer.cc:122: OpParameter<PretenureFlag>(child) ==
NOT_TENURED) {
Can we have PretenureFlagOf, please?

[Benedikt Meurer, 2016-09-20 09:42:55]

https://codereview.chromium.org/2348293003/diff/1/src/compiler/memory-optimiz...
File src/compiler/memory-optimizer.cc (right):

https://codereview.chromium.org/2348293003/diff/1/src/compiler/memory-optimiz...
src/compiler/memory-optimizer.cc:122: OpParameter<PretenureFlag>(child) ==
NOT_TENURED) {
Follow-up CL.

[Benedikt Meurer, 2016-09-20 09:43:39]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-09-20 09:43:47]

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, 2016-09-20 09:57:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-20 09:58:40]

Description was changed from

==========
[turbofan] Propagate tenuring decisions to child object allocations.

When an allocation for a parent object is pretenured, also propagate
that to all allocations for objects that are (potentially) stored into
the parent object.

R=jarin@chromium.org
==========

to

==========
[turbofan] Propagate tenuring decisions to child object allocations.

When an allocation for a parent object is pretenured, also propagate
that to all allocations for objects that are (potentially) stored into
the parent object.

R=jarin@chromium.org

Committed: https://crrev.com/825f506fab01c1e158603c0915231bd7b8ac19c8
Cr-Commit-Position: refs/heads/master@{#39534}
==========

[commit-bot: I haz the power, 2016-09-20 09:58:41]

Patchset 1 (id:??) landed as
https://crrev.com/825f506fab01c1e158603c0915231bd7b8ac19c8
Cr-Commit-Position: refs/heads/master@{#39534}