PPC: [turbofan] Materialize JSFunction from frame if possible.

PPC: [turbofan] Materialize JSFunction from frame if possible.

Port 725cdc533cb4e31c042d32ce1979012b5bd99ced

Original commit message:
This reduces the overhead of recursive calls when context specialization
is enabled. Based on this it might be possible to further reduce the
overhead by also specializing the call itself.

As a drive-by-fix, port the fast context materialization optimization to
arm and arm64, that was previously only supported on x64 and ia32.

R=mbrandy@us.ibm.com

BUG=

Committed: https://crrev.com/d646fcc2f0bf22a31c030d28223431f9760e5bcd
Cr-Commit-Position: refs/heads/master@{#27762}

[michael_dawson, 2015-04-10 16:00:46]

Catching up, next PPC port

[MTBrandyberry, 2015-04-10 16:35:13]

On 2015/04/10 16:00:46, michael_dawson wrote:
> Catching up, next PPC port

lgtm

[michael_dawson, 2015-04-10 20:06:19]

The CQ bit was checked by michael_dawson@ca.ibm.com

[commit-bot: I haz the power, 2015-04-10 20:33:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1078183002/1

[commit-bot: I haz the power, 2015-04-10 20:59:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-10 21:02:41]

Patchset 1 (id:??) landed as
https://crrev.com/d646fcc2f0bf22a31c030d28223431f9760e5bcd
Cr-Commit-Position: refs/heads/master@{#27762}