S390: [generators] Decouple generator resume from fullcodegen.

S390: [generators] Decouple generator resume from fullcodegen.

Port 974721c66131d208571b8759a1caadf7f995c54c

Original commit message:
    Introduce a ResumeGeneratorTrampoline, which does the actual stack state
    reconstruction (currently always restores a fullcodegen frame), and
    introduce appropriate TurboFan builtins for %GeneratorPrototype%.next,
    %GeneratorPrototype%.return and %GeneratorPrototype%.throw based on
    this native builtin.

    Also unify the flooding in case of step-in to always work based on
    JSFunction and remove the special casing for JSGeneratorObject.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=chromium:513471
LOG=n

Committed: https://crrev.com/41a9298524f8c21bd898ee57df3ce708b09c1d37
Cr-Commit-Position: refs/heads/master@{#35316}

[john.yan, 2016-04-06 21:47:15]

PTAL

[MTBrandyberry, 2016-04-06 21:51:43]

lgtm

[john.yan, 2016-04-06 21:52:15]

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

[commit-bot: I haz the power, 2016-04-06 21:52:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1870483002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1870483002/1

[commit-bot: I haz the power, 2016-04-06 22:12:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-06 22:12:36]

Description was changed from

==========
S390: [generators] Decouple generator resume from fullcodegen.

Port 974721c66131d208571b8759a1caadf7f995c54c

Original commit message:
    Introduce a ResumeGeneratorTrampoline, which does the actual stack state
    reconstruction (currently always restores a fullcodegen frame), and
    introduce appropriate TurboFan builtins for %GeneratorPrototype%.next,
    %GeneratorPrototype%.return and %GeneratorPrototype%.throw based on
    this native builtin.

    Also unify the flooding in case of step-in to always work based on
    JSFunction and remove the special casing for JSGeneratorObject.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com,
michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=chromium:513471
LOG=n
==========

to

==========
S390: [generators] Decouple generator resume from fullcodegen.

Port 974721c66131d208571b8759a1caadf7f995c54c

Original commit message:
    Introduce a ResumeGeneratorTrampoline, which does the actual stack state
    reconstruction (currently always restores a fullcodegen frame), and
    introduce appropriate TurboFan builtins for %GeneratorPrototype%.next,
    %GeneratorPrototype%.return and %GeneratorPrototype%.throw based on
    this native builtin.

    Also unify the flooding in case of step-in to always work based on
    JSFunction and remove the special casing for JSGeneratorObject.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com,
michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=chromium:513471
LOG=n

Committed: https://crrev.com/41a9298524f8c21bd898ee57df3ce708b09c1d37
Cr-Commit-Position: refs/heads/master@{#35316}
==========

[commit-bot: I haz the power, 2016-04-06 22:12:37]

Patchset 1 (id:??) landed as
https://crrev.com/41a9298524f8c21bd898ee57df3ce708b09c1d37
Cr-Commit-Position: refs/heads/master@{#35316}