X87: [compiler] Introduce code stubs for string relational comparisons.

X87: [compiler] Introduce code stubs for string relational comparisons.

  port 5912e0f014bd7b7d52cdc293145a912a4ecf2cf3(r34485)

  original commit message:
  Add StringLessThanStub, StringLessThanOrEqualStub, StringGreaterThanStub
  and StringGreaterThanOrEqualStub, based on the CodeStubAssembler, and
  hook them up with TurboFan (and Ignition). The stubs are currently
  essentially comparable with the StringCompareStub, which is now
  obsolete. We can later extend these stubs to cover more interesting
  cases (i.e. two byte sequential string comparisons, etc.).

BUG=

Committed: https://crrev.com/5dbc0e30cb1d6a61e9308c50f2a6fc3d864785f6
Cr-Commit-Position: refs/heads/master@{#34516}

[zhengxing.li, 2016-03-07 02:09:54]

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

[zhengxing.li, 2016-03-07 02:09:54]

PTAL, thanks!

[Weiliang, 2016-03-07 02:18:15]

lgtm

[zhengxing.li, 2016-03-07 02:19:31]

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

[commit-bot: I haz the power, 2016-03-07 02:19:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1768013002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1768013002/1

[commit-bot: I haz the power, 2016-03-07 02:39:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-07 02:39:33]

Description was changed from

==========
X87: [compiler] Introduce code stubs for string relational comparisons.

  port 5912e0f014bd7b7d52cdc293145a912a4ecf2cf3(r34485)

  original commit message:
  Add StringLessThanStub, StringLessThanOrEqualStub, StringGreaterThanStub
  and StringGreaterThanOrEqualStub, based on the CodeStubAssembler, and
  hook them up with TurboFan (and Ignition). The stubs are currently
  essentially comparable with the StringCompareStub, which is now
  obsolete. We can later extend these stubs to cover more interesting
  cases (i.e. two byte sequential string comparisons, etc.).

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

to

==========
X87: [compiler] Introduce code stubs for string relational comparisons.

  port 5912e0f014bd7b7d52cdc293145a912a4ecf2cf3(r34485)

  original commit message:
  Add StringLessThanStub, StringLessThanOrEqualStub, StringGreaterThanStub
  and StringGreaterThanOrEqualStub, based on the CodeStubAssembler, and
  hook them up with TurboFan (and Ignition). The stubs are currently
  essentially comparable with the StringCompareStub, which is now
  obsolete. We can later extend these stubs to cover more interesting
  cases (i.e. two byte sequential string comparisons, etc.).

BUG=

Committed: https://crrev.com/5dbc0e30cb1d6a61e9308c50f2a6fc3d864785f6
Cr-Commit-Position: refs/heads/master@{#34516}
==========

[commit-bot: I haz the power, 2016-03-07 02:39:34]

Patchset 1 (id:??) landed as
https://crrev.com/5dbc0e30cb1d6a61e9308c50f2a6fc3d864785f6
Cr-Commit-Position: refs/heads/master@{#34516}