X87: [stubs] A new approach to TF stubs.

X87: [stubs] A new approach to TF stubs.

  port 3e7e3ed726dd016dc6ae89803999a28fba2362c7 (r32508)

  original commit message:
  * Add a sibling interface to InterpreterAssembler called
    CodeStubAssembler which provides a wrapper around the
    RawMachineAssembler and is intented to make it easy to build
    efficient cross-platform code stubs. Much of the implementation
    of CodeStubAssembler is shamelessly stolen from the
    InterpreterAssembler, and the idea is to eventually merge the
    two interfaces somehow, probably moving the
    InterpreterAssembler interface over to use the
    CodeStubAssembler. Short-term, however, the two interfaces
    shall remain decoupled to increase our velocity developing the
    two systems in parallel.
  * Implement the StringLength stub in TurboFan with the new
    CodeStubAssembler. Replace and remove the old Hydrogen-stub
    version.
  * Remove a whole slew of machinery to support JavaScript-style
    code stub generation, since it ultimately proved unwieldy,
    brittle and baroque. This cleanup includes removing the shared
    code stub context, several example stubs and a tangle of build
    file changes.

BUG=

Committed: https://crrev.com/28a5baa01c41b25f105a9244c28f0ee2352ff42a
Cr-Commit-Position: refs/heads/master@{#32538}

[zhengxing.li, 2015-12-03 02:31:12]

zhengxing.li@intel.com changed reviewers:
+ chunyang.dai@intel.com, danno@chromium.org, weiliang.lin@intel.com

[Weiliang, 2015-12-03 04:17:43]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-12-03 04:17:44]

lgtm

[commit-bot: I haz the power, 2015-12-03 04:18:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1492213002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1492213002/1

[commit-bot: I haz the power, 2015-12-03 04:54:44]

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

[commit-bot: I haz the power, 2015-12-03 04:54:44]

Try jobs failed on following builders:
  v8_linux_arm64_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_arm64_rel/builds/1...)

[zhengxing.li, 2015-12-03 05:32:31]

The CQ bit was checked by zhengxing.li@intel.com

[commit-bot: I haz the power, 2015-12-03 05:32:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1492213002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1492213002/1

[commit-bot: I haz the power, 2015-12-03 05:48:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-03 05:48:59]

Description was changed from

==========
X87: [stubs] A new approach to TF stubs.

  port 3e7e3ed726dd016dc6ae89803999a28fba2362c7 (r32508)

  original commit message:
  * Add a sibling interface to InterpreterAssembler called
    CodeStubAssembler which provides a wrapper around the
    RawMachineAssembler and is intented to make it easy to build
    efficient cross-platform code stubs. Much of the implementation
    of CodeStubAssembler is shamelessly stolen from the
    InterpreterAssembler, and the idea is to eventually merge the
    two interfaces somehow, probably moving the
    InterpreterAssembler interface over to use the
    CodeStubAssembler. Short-term, however, the two interfaces
    shall remain decoupled to increase our velocity developing the
    two systems in parallel.
  * Implement the StringLength stub in TurboFan with the new
    CodeStubAssembler. Replace and remove the old Hydrogen-stub
    version.
  * Remove a whole slew of machinery to support JavaScript-style
    code stub generation, since it ultimately proved unwieldy,
    brittle and baroque. This cleanup includes removing the shared
    code stub context, several example stubs and a tangle of build
    file changes.

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

to

==========
X87: [stubs] A new approach to TF stubs.

  port 3e7e3ed726dd016dc6ae89803999a28fba2362c7 (r32508)

  original commit message:
  * Add a sibling interface to InterpreterAssembler called
    CodeStubAssembler which provides a wrapper around the
    RawMachineAssembler and is intented to make it easy to build
    efficient cross-platform code stubs. Much of the implementation
    of CodeStubAssembler is shamelessly stolen from the
    InterpreterAssembler, and the idea is to eventually merge the
    two interfaces somehow, probably moving the
    InterpreterAssembler interface over to use the
    CodeStubAssembler. Short-term, however, the two interfaces
    shall remain decoupled to increase our velocity developing the
    two systems in parallel.
  * Implement the StringLength stub in TurboFan with the new
    CodeStubAssembler. Replace and remove the old Hydrogen-stub
    version.
  * Remove a whole slew of machinery to support JavaScript-style
    code stub generation, since it ultimately proved unwieldy,
    brittle and baroque. This cleanup includes removing the shared
    code stub context, several example stubs and a tangle of build
    file changes.

BUG=

Committed: https://crrev.com/28a5baa01c41b25f105a9244c28f0ee2352ff42a
Cr-Commit-Position: refs/heads/master@{#32538}
==========

[commit-bot: I haz the power, 2015-12-03 05:49:00]

Patchset 1 (id:??) landed as
https://crrev.com/28a5baa01c41b25f105a9244c28f0ee2352ff42a
Cr-Commit-Position: refs/heads/master@{#32538}