S390: [turbofan] Run everything after representation selection concurrently.

S390: [turbofan] Run everything after representation selection concurrently.

    Port d1b3d426ceae45e13ccf30cd4ac6e99e2bb8baf6

    Original commit message:

        Further refactor the pipeline to even run the first scheduler (part of
        the effect control linearization) concurrently. This temporarily
        disables most of the write barrier elimination, but we will get back to
        that later.

        Drive-by-fix: Remove the dead code from ChangeLowering, and stack
        allocate the Typer in the pipeline. Also migrate the AllocateStub to a
        native code builtin, so that we have the code object + a handle to it
        available all the time.

    R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=

Committed: https://crrev.com/5d84567a50b1d9240e58e6f9af58d2b963b5c4ac
Cr-Commit-Position: refs/heads/master@{#35950}

[john.yan, 2016-05-02 20:33:05]

lgtm

[bcleung, 2016-05-02 20:56:53]

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

[commit-bot: I haz the power, 2016-05-02 20:57:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1941783003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1941783003/1

[commit-bot: I haz the power, 2016-05-02 21:17:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-02 21:18:24]

Description was changed from

==========
S390: [turbofan] Run everything after representation selection concurrently.

    Port d1b3d426ceae45e13ccf30cd4ac6e99e2bb8baf6

    Original commit message:

        Further refactor the pipeline to even run the first scheduler (part of
        the effect control linearization) concurrently. This temporarily
        disables most of the write barrier elimination, but we will get back to
        that later.

        Drive-by-fix: Remove the dead code from ChangeLowering, and stack
        allocate the Typer in the pipeline. Also migrate the AllocateStub to a
        native code builtin, so that we have the code object + a handle to it
        available all the time.

    R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com,
mbrandy@us.ibm.com


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

to

==========
S390: [turbofan] Run everything after representation selection concurrently.

    Port d1b3d426ceae45e13ccf30cd4ac6e99e2bb8baf6

    Original commit message:

        Further refactor the pipeline to even run the first scheduler (part of
        the effect control linearization) concurrently. This temporarily
        disables most of the write barrier elimination, but we will get back to
        that later.

        Drive-by-fix: Remove the dead code from ChangeLowering, and stack
        allocate the Typer in the pipeline. Also migrate the AllocateStub to a
        native code builtin, so that we have the code object + a handle to it
        available all the time.

    R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com,
mbrandy@us.ibm.com

BUG=

Committed: https://crrev.com/5d84567a50b1d9240e58e6f9af58d2b963b5c4ac
Cr-Commit-Position: refs/heads/master@{#35950}
==========

[commit-bot: I haz the power, 2016-05-02 21:18:25]

Patchset 1 (id:??) landed as
https://crrev.com/5d84567a50b1d9240e58e6f9af58d2b963b5c4ac
Cr-Commit-Position: refs/heads/master@{#35950}