Stage ES2015 ToLength semantics

Stage ES2015 ToLength semantics

Many places in the JavaScript standard library are changed in ES2015 from
getting an integer using ToUint32 to using ToLength. This patch stages
the flag turning on those new semantics.

BUG=v8:3087, v8:4244
LOG=Y
R=adamk

Committed: https://crrev.com/7736f47460683dad84e77d1123c32487921d1a89
Cr-Commit-Position: refs/heads/master@{#31641}

[Dan Ehrenberg, 2015-10-27 05:24:06]

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

[commit-bot: I haz the power, 2015-10-27 05:24:15]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1426673003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1426673003/1

[commit-bot: I haz the power, 2015-10-27 05:52:37]

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

[commit-bot: I haz the power, 2015-10-27 05:52:37]

Dry run: This issue passed the CQ dry run.

[adamk, 2015-10-27 17:57:43]

lgtm

https://codereview.chromium.org/1426673003/diff/1/test/test262/test262.status
File test/test262/test262.status (right):

https://codereview.chromium.org/1426673003/diff/1/test/test262/test262.status...
test/test262/test262.status:560: #
https://code.google.com/p/v8/issues/detail?id=4516
Presumably we'll still want to skip these even after that bug is fixed due to
their long running time :(

[adamk, 2015-10-27 18:02:52]

Maybe this should wait until you land a fix for the %AddElement thing, otherwise
we're opening up a world of "illegal access".

[Dan Ehrenberg, 2015-10-27 18:08:32]

On 2015/10/27 at 18:02:52, adamk wrote:
> Maybe this should wait until you land a fix for the %AddElement thing,
otherwise we're opening up a world of "illegal access".

OK, I'll wait to submit this.

[Dan Ehrenberg, 2015-10-28 20:41:02]

The CQ bit was checked by littledan@chromium.org

[commit-bot: I haz the power, 2015-10-28 20:41:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1426673003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1426673003/1

[commit-bot: I haz the power, 2015-10-28 20:42:01]

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

[commit-bot: I haz the power, 2015-10-28 20:42:06]

Try jobs failed on following builders:
  v8_linux_arm_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_arm_rel/builds/9547)
  v8_linux_gcc_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_gcc_compile_rel/bu...)
  v8_linux_mips64el_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mips64el_compile_r...)
  v8_linux_mipsel_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mipsel_compile_rel...)

[Dan Ehrenberg, 2015-10-28 20:53:27]

The CQ bit was checked by littledan@chromium.org

[Dan Ehrenberg, 2015-10-28 20:53:27]

The patchset sent to the CQ was uploaded after l-g-t-m from adamk@chromium.org
Link to the patchset: https://codereview.chromium.org/1426673003/#ps20001
(title: "Rebase")

[commit-bot: I haz the power, 2015-10-28 20:53:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1426673003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1426673003/20001

[commit-bot: I haz the power, 2015-10-28 21:14:36]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-28 21:15:08]

Patchset 2 (id:??) landed as
https://crrev.com/7736f47460683dad84e77d1123c32487921d1a89
Cr-Commit-Position: refs/heads/master@{#31641}