[Interpreter] Switch back to optimizing after 2 ticks for Ignition code.

[Interpreter] Switch back to optimizing after 2 ticks for Ignition code.

It looks like waiting for 4 ticks before optimizing from interpreted
code is hurting performance in sunspider after turning on Ignition
for all TurboFan code. Set it back to 2 ticks.

BUG=chromium:661556
Committed: https://crrev.com/cf5b0c590ced1dac3e8ead4631c507a48ab91f25
Cr-Commit-Position: refs/heads/master@{#40845}

[rmcilroy, 2016-11-08 14:30:42]

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

[commit-bot: I haz the power, 2016-11-08 14:30:51]

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

[rmcilroy, 2016-11-08 14:30:57]

rmcilroy@chromium.org changed reviewers:
+ mythria@chromium.org

[rmcilroy, 2016-11-08 14:30:57]

Mythri, PTAL, thanks.

[commit-bot: I haz the power, 2016-11-08 14:55:24]

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

[commit-bot: I haz the power, 2016-11-08 14:55:25]

Dry run: This issue passed the CQ dry run.

[mythria, 2016-11-08 14:56:12]

lgtm.

[rmcilroy, 2016-11-08 16:35:17]

The CQ bit was checked by rmcilroy@chromium.org

[commit-bot: I haz the power, 2016-11-08 16:35:25]

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, 2016-11-08 16:37:46]

Committed patchset #1 (id:1)

[mvstanton, 2016-11-08 21:24:12]

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

[mvstanton, 2016-11-08 21:24:12]

Sigh, the world of heuristics. Thx for looking at that, Ross!

[rmcilroy, 2016-11-08 21:38:03]

On 2016/11/08 21:24:12, mvstanton wrote:
> Sigh, the world of heuristics. Thx for looking at that, Ross!

Opps, I was planning on ccing you and Benedikt on this for FYI before landing
but forgot. This will probably regress ignition+turbo a bit (and
igintion-staging to a lesser extent) but hopefully once we've sped up TF compile
this heuristic will work better on those configs too.

[mvstanton, 2016-11-08 21:44:00]

No biggie, sounds good.

[commit-bot: I haz the power, 2016-11-17 22:26:40]

Description was changed from

==========
[Interpreter] Switch back to optimizing after 2 ticks for Ignition code.

It looks like waiting for 4 ticks before optimizing from interpreted
code is hurting performance in sunspider after turning on Ignition
for all TurboFan code. Set it back to 2 ticks.

BUG=chromium:661556
==========

to

==========
[Interpreter] Switch back to optimizing after 2 ticks for Ignition code.

It looks like waiting for 4 ticks before optimizing from interpreted
code is hurting performance in sunspider after turning on Ignition
for all TurboFan code. Set it back to 2 ticks.

BUG=chromium:661556

Committed: https://crrev.com/cf5b0c590ced1dac3e8ead4631c507a48ab91f25
Cr-Commit-Position: refs/heads/master@{#40845}
==========

[commit-bot: I haz the power, 2016-11-17 22:26:41]

Patchset 1 (id:??) landed as
https://crrev.com/cf5b0c590ced1dac3e8ead4631c507a48ab91f25
Cr-Commit-Position: refs/heads/master@{#40845}