[turbofan] Initial support for inline allocations of arrays.

[turbofan] Initial support for inline allocations of arrays.

Add support for using inline allocations for arrays in lowering of
JSCreateArray when target equals new.target.  Currently we are only
concerend with the straight-forward Array() and Array(length) cases,
but at some point TurboFan should also be able to support the more
complex initializing cases.

R=mvstanton@chromium.org
BUG=v8:4470
LOG=n

Committed: https://crrev.com/e39050473fa0425f08eb22c5f28bf2320c72f5c5
Cr-Commit-Position: refs/heads/master@{#32191}

[Benedikt Meurer, 2015-11-23 13:37:46]

Hey Michael,

Here's an easy one to start with inlining the JSArray allocations in Turbofan.
Please take a look.

Thanks,
Benedikt

[mvstanton, 2015-11-23 13:45:14]

Pretty awesome!
LGTM.
Had to look up RelaxControls() though. :p

[Benedikt Meurer, 2015-11-23 13:46:46]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2015-11-23 13:47:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1465203002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1465203002/1

[commit-bot: I haz the power, 2015-11-23 13:54:51]

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

[commit-bot: I haz the power, 2015-11-23 13:54:52]

Try jobs failed on following builders:
  v8_linux_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_rel/builds/12033)

[Benedikt Meurer, 2015-11-24 06:14:11]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2015-11-24 06:14:11]

The patchset sent to the CQ was uploaded after l-g-t-m from
mvstanton@chromium.org
Link to the patchset: https://codereview.chromium.org/1465203002/#ps20001
(title: "Fix unbounded inlining. Reduce code duplication. Add proper code
dependencies.")

[commit-bot: I haz the power, 2015-11-24 06:14:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1465203002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1465203002/20001

[commit-bot: I haz the power, 2015-11-24 07:02:29]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-11-24 07:03:04]

Patchset 2 (id:??) landed as
https://crrev.com/e39050473fa0425f08eb22c5f28bf2320c72f5c5
Cr-Commit-Position: refs/heads/master@{#32191}