[interpreter] Elide OSR polling from fake loops.

[interpreter] Elide OSR polling from fake loops.

This makes sure we are not inserting {OsrPoll} instructions for any
statements that are not actually loops and have no back edges. Without
back edges the {BytecodeGraphBuilder} is unable to deduce loop ranges
and hence cannot construct a graph for OSR entry.

R=neis@chromium.org
TEST=mjsunit/regress/regress-5252
BUG=v8:5252
Committed: https://crrev.com/962fd4ae4bd3f2a7a4b7298e1e77e65234b6b5c5
Cr-Commit-Position: refs/heads/master@{#38233}

[Michael Starzinger, 2016-08-01 16:40:50]

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

[commit-bot: I haz the power, 2016-08-01 16:41:02]

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, 2016-08-01 17:04:23]

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

[commit-bot: I haz the power, 2016-08-01 17:04:24]

Dry run: This issue passed the CQ dry run.

[Michael Starzinger, 2016-08-02 08:24:07]

Addressed offline comments. Thanks, great suggestions! PTAL.

[Michael Starzinger, 2016-08-02 08:24:11]

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

[commit-bot: I haz the power, 2016-08-02 08:24:19]

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

[neis, 2016-08-02 08:29:50]

lgtm

[commit-bot: I haz the power, 2016-08-02 08:39:11]

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

[commit-bot: I haz the power, 2016-08-02 08:39:12]

Dry run: Try jobs failed on following builders:
  v8_linux64_asan_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel_ng/buil...)
  v8_linux64_asan_rel_ng_triggered on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel_ng_trig...)

[Michael Starzinger, 2016-08-02 08:52:53]

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

[commit-bot: I haz the power, 2016-08-02 08:53:01]

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, 2016-08-02 09:13:07]

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

[commit-bot: I haz the power, 2016-08-02 09:13:08]

Dry run: This issue passed the CQ dry run.

[Michael Starzinger, 2016-08-02 09:14:20]

The CQ bit was checked by mstarzinger@chromium.org

[Michael Starzinger, 2016-08-02 09:14:21]

The patchset sent to the CQ was uploaded after l-g-t-m from neis@chromium.org
Link to the patchset: https://codereview.chromium.org/2200733002/#ps40001
(title: "Recement.")

[commit-bot: I haz the power, 2016-08-02 09:14:27]

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, 2016-08-02 09:16:11]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-08-02 09:17:04]

Description was changed from

==========
[interpreter] Elide OSR polling from fake loops.

This makes sure we are not inserting {OsrPoll} instructions for any
statements that are not actually loops and have no back edges. Without
back edges the {BytecodeGraphBuilder} is unable to deduce loop ranges
and hence cannot construct a graph for OSR entry.

R=neis@chromium.org
TEST=mjsunit/regress/regress-5252
BUG=v8:5252
==========

to

==========
[interpreter] Elide OSR polling from fake loops.

This makes sure we are not inserting {OsrPoll} instructions for any
statements that are not actually loops and have no back edges. Without
back edges the {BytecodeGraphBuilder} is unable to deduce loop ranges
and hence cannot construct a graph for OSR entry.

R=neis@chromium.org
TEST=mjsunit/regress/regress-5252
BUG=v8:5252

Committed: https://crrev.com/962fd4ae4bd3f2a7a4b7298e1e77e65234b6b5c5
Cr-Commit-Position: refs/heads/master@{#38233}
==========

[commit-bot: I haz the power, 2016-08-02 09:17:05]

Patchset 3 (id:??) landed as
https://crrev.com/962fd4ae4bd3f2a7a4b7298e1e77e65234b6b5c5
Cr-Commit-Position: refs/heads/master@{#38233}