X87: Crankshaft is now able to compile top level code even if there is a ScriptContext.

X87: Crankshaft is now able to compile top level code even if there is a ScriptContext.

port 29ebcc32052d486cbc1933ac4738aa5cb68aa851 (r30496).

original commit message:

    This CL introduces HPrologue instruction which does the context allocation work and supports deoptimization.

BUG=

Committed: https://crrev.com/c0c3d866fb824290c24d4c2a14414019d844515f
Cr-Commit-Position: refs/heads/master@{#30606}

[chunyang.dai, 2015-09-06 10:19:33]

chunyang.dai@intel.com changed reviewers:
+ weiliang.lin@intel.com

[chunyang.dai, 2015-09-06 10:19:34]

PTAL

[Weiliang, 2015-09-07 07:17:01]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-09-07 07:17:01]

lgtm

[commit-bot: I haz the power, 2015-09-07 07:17:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1308743005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1308743005/1

[commit-bot: I haz the power, 2015-09-07 07:48:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-07 07:49:09]

Patchset 1 (id:??) landed as
https://crrev.com/c0c3d866fb824290c24d4c2a14414019d844515f
Cr-Commit-Position: refs/heads/master@{#30606}