[generators] Replace some runtime functions with Turbofan JS operators.

[generators] Replace some runtime functions with Turbofan JS operators.

Introduce three new JS operators in Turbofan:
- JSGeneratorStore is used in implementing Ignition's SuspendGenerator bytecode.
- JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
  implementing Ignition's ResumeGenerator bytecode.

Remove the runtime functions that were used to implement these bytecodes before.

BUG=v8:4907
Committed: https://crrev.com/29f3e6682b44b898cece150e07e6f04f5461aaf0
Cr-Commit-Position: refs/heads/master@{#36395}

[neis, 2016-05-19 12:57:22]

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

[commit-bot: I haz the power, 2016-05-19 12:57:32]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1991203002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1991203002/1

[commit-bot: I haz the power, 2016-05-19 13:35:06]

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

[commit-bot: I haz the power, 2016-05-19 13:35:07]

Dry run: This issue passed the CQ dry run.

[neis, 2016-05-19 13:44:28]

Description was changed from

==========
[generators] Replace some runtime functions with Turbofan JS operators.

BUG=
==========

to

==========
[generators] Replace some runtime functions with Turbofan JS operators.

This introduces three JS operators in Turbofan: JSGeneratorStore is used in
implementing Ignition's SuspendGenerator bytecode;
JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
implementing Ignition's ResumeGenerator bytecode.

BUG=v8:4907
==========

[neis, 2016-05-19 13:44:29]

neis@chromium.org changed reviewers:
+ bmeurer@chromium.org, jarin@chromium.org

[neis, 2016-05-19 13:46:21]

Description was changed from

==========
[generators] Replace some runtime functions with Turbofan JS operators.

This introduces three JS operators in Turbofan: JSGeneratorStore is used in
implementing Ignition's SuspendGenerator bytecode;
JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
implementing Ignition's ResumeGenerator bytecode.

BUG=v8:4907
==========

to

==========
[generators] Replace some runtime functions with Turbofan JS operators.

Introduce three new JS operators in Turbofan:
- JSGeneratorStore is used in implementing Ignition's SuspendGenerator bytecode.
- JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
  implementing Ignition's ResumeGenerator bytecode.

Remove the runtime functions that were used to implement these bytecodes before.

BUG=v8:4907
==========

[neis, 2016-05-19 13:46:32]

PTAL

[Jarin, 2016-05-19 19:02:57]

I like it, lgtm!

[neis, 2016-05-20 08:27:01]

The CQ bit was checked by neis@chromium.org

[commit-bot: I haz the power, 2016-05-20 08:27:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1991203002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1991203002/1

[commit-bot: I haz the power, 2016-05-20 08:29:53]

Description was changed from

==========
[generators] Replace some runtime functions with Turbofan JS operators.

Introduce three new JS operators in Turbofan:
- JSGeneratorStore is used in implementing Ignition's SuspendGenerator bytecode.
- JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
  implementing Ignition's ResumeGenerator bytecode.

Remove the runtime functions that were used to implement these bytecodes before.

BUG=v8:4907
==========

to

==========
[generators] Replace some runtime functions with Turbofan JS operators.

Introduce three new JS operators in Turbofan:
- JSGeneratorStore is used in implementing Ignition's SuspendGenerator bytecode.
- JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
  implementing Ignition's ResumeGenerator bytecode.

Remove the runtime functions that were used to implement these bytecodes before.

BUG=v8:4907
==========

[commit-bot: I haz the power, 2016-05-20 08:29:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-20 08:30:40]

Description was changed from

==========
[generators] Replace some runtime functions with Turbofan JS operators.

Introduce three new JS operators in Turbofan:
- JSGeneratorStore is used in implementing Ignition's SuspendGenerator bytecode.
- JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
  implementing Ignition's ResumeGenerator bytecode.

Remove the runtime functions that were used to implement these bytecodes before.

BUG=v8:4907
==========

to

==========
[generators] Replace some runtime functions with Turbofan JS operators.

Introduce three new JS operators in Turbofan:
- JSGeneratorStore is used in implementing Ignition's SuspendGenerator bytecode.
- JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
  implementing Ignition's ResumeGenerator bytecode.

Remove the runtime functions that were used to implement these bytecodes before.

BUG=v8:4907

Committed: https://crrev.com/29f3e6682b44b898cece150e07e6f04f5461aaf0
Cr-Commit-Position: refs/heads/master@{#36395}
==========

[commit-bot: I haz the power, 2016-05-20 08:30:41]

Patchset 1 (id:??) landed as
https://crrev.com/29f3e6682b44b898cece150e07e6f04f5461aaf0
Cr-Commit-Position: refs/heads/master@{#36395}