[regexp] Avoid unneeded accesses to lastIndex

[regexp] Avoid unneeded accesses to lastIndex

This implements https://github.com/tc39/ecma262/pull/627/.

BUG=v8:5360
Committed: https://crrev.com/8df547d4024025001323daae3c105861dce05015
Cr-Commit-Position: refs/heads/master@{#39402}

[jgruber, 2016-09-13 13:11:08]

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

[commit-bot: I haz the power, 2016-09-13 13:11:14]

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

[jgruber, 2016-09-13 13:23:32]

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

[commit-bot: I haz the power, 2016-09-13 13:23:33]

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

[jgruber, 2016-09-13 13:24:32]

jgruber@chromium.org changed reviewers:
+ littledan@chromium.org

[jgruber, 2016-09-13 13:24:33]

Three test262 tests need to be updated for this change (see test262.status).

[commit-bot: I haz the power, 2016-09-13 14:13:23]

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

[commit-bot: I haz the power, 2016-09-13 14:13:24]

Dry run: Try jobs failed on following builders:
  v8_linux_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_rel_ng/builds/12577)
  v8_linux_rel_ng_triggered on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_rel_ng_triggered/b...)

[jgruber, 2016-09-13 14:37:07]

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

[commit-bot: I haz the power, 2016-09-13 14:37:13]

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, 2016-09-13 15:29:04]

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

[commit-bot: I haz the power, 2016-09-13 15:29:04]

Dry run: This issue passed the CQ dry run.

[Dan Ehrenberg, 2016-09-13 17:53:42]

lgtm

Looks like a faithful implementation of the new spec to me.

One follow-up would be to reland the 'strict mode' patch for src/js/regexp.js.

Another follow-up, if you have time, would be to contribute the new test262
tests (bug: https://github.com/tc39/test262/issues/749)

[jgruber, 2016-09-14 07:17:22]

The CQ bit was checked by jgruber@chromium.org

[commit-bot: I haz the power, 2016-09-14 07:17:33]

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, 2016-09-14 07:39:00]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-14 07:39:51]

Description was changed from

==========
[regexp] Avoid unneeded accesses to lastIndex

This implements https://github.com/tc39/ecma262/pull/627/.

BUG=v8:5360
==========

to

==========
[regexp] Avoid unneeded accesses to lastIndex

This implements https://github.com/tc39/ecma262/pull/627/.

BUG=v8:5360

Committed: https://crrev.com/8df547d4024025001323daae3c105861dce05015
Cr-Commit-Position: refs/heads/master@{#39402}
==========

[commit-bot: I haz the power, 2016-09-14 07:39:52]

Patchset 2 (id:??) landed as
https://crrev.com/8df547d4024025001323daae3c105861dce05015
Cr-Commit-Position: refs/heads/master@{#39402}