[crankshaft] Disable further folding already folded allocations.

[crankshaft] Disable further folding already folded allocations.

When we try to further fold previously folded allocations in Crankshaft
GVN we don't properly transform the allocations involved, which causes
the mechanism to leave holes in the new/old space (and thereby violate
the iterability property of the new/old space).

BUG=chromium:621868
R=jarin@chromium.org

Committed: https://crrev.com/7b79224b21a23dfcd44b820c51d9f094b943b862
Cr-Commit-Position: refs/heads/master@{#39040}

[Benedikt Meurer, 2016-08-31 09:26:57]

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

[commit-bot: I haz the power, 2016-08-31 09:27:05]

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

[Jarin, 2016-08-31 09:27:59]

lgtm

[Benedikt Meurer, 2016-08-31 09:28:37]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2016-08-31 09:28:41]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-08-31 09:28:45]

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, 2016-08-31 09:48:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-31 09:48:53]

Description was changed from

==========
[crankshaft] Disable further folding already folded allocations.

When we try to further fold previously folded allocations in Crankshaft
GVN we don't properly transform the allocations involved, which causes
the mechanism to leave holes in the new/old space (and thereby violate
the iterability property of the new/old space).

BUG=chromium:621868
R=jarin@chromium.org
==========

to

==========
[crankshaft] Disable further folding already folded allocations.

When we try to further fold previously folded allocations in Crankshaft
GVN we don't properly transform the allocations involved, which causes
the mechanism to leave holes in the new/old space (and thereby violate
the iterability property of the new/old space).

BUG=chromium:621868
R=jarin@chromium.org

Committed: https://crrev.com/7b79224b21a23dfcd44b820c51d9f094b943b862
Cr-Commit-Position: refs/heads/master@{#39040}
==========

[commit-bot: I haz the power, 2016-08-31 09:48:54]

Patchset 1 (id:??) landed as
https://crrev.com/7b79224b21a23dfcd44b820c51d9f094b943b862
Cr-Commit-Position: refs/heads/master@{#39040}