[turbofan] Add initial support for SOFT deopts.

[turbofan] Add initial support for SOFT deopts.

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=jarin@chromium.org

Committed: https://crrev.com/7a22fdff1ebfebcdd83f2cae488915ae8ea2dc81
Cr-Commit-Position: refs/heads/master@{#32690}

[Benedikt Meurer, 2015-12-09 05:04:17]

Hey Jaro,

Here's the fundamental support for SOFT deopts, no functional change.
Please take a look.

Thanks,
Benedikt

[Jarin, 2015-12-09 06:37:42]

lgtm

[Benedikt Meurer, 2015-12-09 06:38:11]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2015-12-09 06:38:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1511883002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1511883002/1

[commit-bot: I haz the power, 2015-12-09 06:53:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-09 06:54:21]

Description was changed from

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

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=jarin@chromium.org
==========

to

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

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=jarin@chromium.org

Committed: https://crrev.com/7a22fdff1ebfebcdd83f2cae488915ae8ea2dc81
Cr-Commit-Position: refs/heads/master@{#32690}
==========

[commit-bot: I haz the power, 2015-12-09 06:54:21]

Patchset 1 (id:??) landed as
https://crrev.com/7a22fdff1ebfebcdd83f2cae488915ae8ea2dc81
Cr-Commit-Position: refs/heads/master@{#32690}