PPC: [turbofan] Add initial support for SOFT deopts.

PPC: [turbofan] Add initial support for SOFT deopts.

Port 7a22fdff1ebfebcdd83f2cae488915ae8ea2dc81

Original commit message:
    This only introduces the basic support for both SOFT and EAGER deopts in
    TurboFan, but doesn't make use of SOFT deopts anywhere yet (there are
    some other issues blocking that). Basically every Deoptimize operator
    now has a DeoptimizeKind, which can be either kSoft or kEager.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/cfef519a1ed03832f47623f3efec4a0617e1ac0f
Cr-Commit-Position: refs/heads/master@{#32727}

[MTBrandyberry, 2015-12-09 17:56:21]

The CQ bit was checked by mbrandy@us.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2015-12-09 17:56:29]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1518483002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1518483002/1

[john.yan, 2015-12-09 18:10:57]

lgtm

[commit-bot: I haz the power, 2015-12-09 18:32:46]

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

[commit-bot: I haz the power, 2015-12-09 18:32:47]

Dry run: This issue passed the CQ dry run.

[MTBrandyberry, 2015-12-09 18:33:58]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-12-09 18:34:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1518483002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1518483002/1

[commit-bot: I haz the power, 2015-12-09 18:35:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-09 18:35:53]

Description was changed from

==========
PPC: [turbofan] Add initial support for SOFT deopts.

Port 7a22fdff1ebfebcdd83f2cae488915ae8ea2dc81

Original commit message:
    This only introduces the basic support for both SOFT and EAGER deopts in
    TurboFan, but doesn't make use of SOFT deopts anywhere yet (there are
    some other issues blocking that). Basically every Deoptimize operator
    now has a DeoptimizeKind, which can be either kSoft or kEager.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

to

==========
PPC: [turbofan] Add initial support for SOFT deopts.

Port 7a22fdff1ebfebcdd83f2cae488915ae8ea2dc81

Original commit message:
    This only introduces the basic support for both SOFT and EAGER deopts in
    TurboFan, but doesn't make use of SOFT deopts anywhere yet (there are
    some other issues blocking that). Basically every Deoptimize operator
    now has a DeoptimizeKind, which can be either kSoft or kEager.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/cfef519a1ed03832f47623f3efec4a0617e1ac0f
Cr-Commit-Position: refs/heads/master@{#32727}
==========

[commit-bot: I haz the power, 2015-12-09 18:35:53]

Patchset 1 (id:??) landed as
https://crrev.com/cfef519a1ed03832f47623f3efec4a0617e1ac0f
Cr-Commit-Position: refs/heads/master@{#32727}